Question 1 Katrina has the following dataset: 2, 9, 4, 23, 19, 45, 29, 30, 65. W

Question

Question 1
Katrina has the following dataset: 2, 9, 4, 23, 19, 45, 29, 30, 65. What would f be for the interval 20-29?
Your answer should be a whole number with no decimal places.
Question 2 options: Sandra has a dataset with the following values: 10, 6, 2, 90, 75, 25. What is his range?
Your answer should be a whole number with no decimal places.

Question 3 George has a dataset that he is trying to put together a grouped frequency distribution for. What goal should he follow regarding the number of intervals?
A. He should aim to have about 4 intervals B. He should figure out the intervals before he looks at the data so that he can remain objective. C. He should aim to have intervals that are easily understandable (e.g., 2, 5, 10, etc.) D. All of the above


Question 4
In a frequency distribution graph what goes on the y-axis?
a. Frequency
b. x-value (also known as the scores)
c. fx
d. fx
Question 5 In a frequency distribution graph, the highest bar indicates a. The mean of the frequency distribution
b. The median of the frequency distribution
c. The standard deviation of the frequency distribution
d. X value with the highest frequency






Question 6
Johanna has a data set that begins with the number 70 and ends with the number 210. What should she do differently than Michael whose dataset starts at 0 and ends at 70?
a. Johanna will have two angled lines crossing her y-axis to show that her data do not start at zero whereas Michael’s y-axis is going to start at zero and so his does not required the two angled lines
b. Johanna will have two angled lines crossing her x-axis to show that her data do not start at zero whereas Michael’s x-axis is going to start at zero and so his does not required the two angled lines
c. Johanna will have a large space between the corner of her graph and her first bar to represent the large gap between zero and her first interval whereas Michael’s first bar will be very close to the corner.
d. None of the above because you can’t have a dataset that doesn’t start at zero
Question 7 Maria has the following dataset: 90, 52, 73, 68, 45, 22, 86, 41, 16, 2, 98, 99, 80, 4, 99. She does a grouped frequency distribution graph. She follows the rules that we set up regarding the ideal number of intervals. What interval will have the highest bar?
a. 90-99
b. 40-49
c. 95-99
d. 98-99
e. 76-100
Question 8
What is the purpose of determining central tendency?
a. Getting the general idea of how much variability there is in the dataset
b. Inferring whether there are differences between the treatment group versus the control group
c. Finding the number that best represents the dataset for that variable
d. All of the above are reasons for determining central tendency
Question 9 What are the three forms of central tendency?
a. Standard deviation, mean and median
b. Mean, median and mode
c. Sample, population, mean
d. Sample mean, population mean, mode






Question 10
Kendra is trying to figure out whether or not to use the mean. What is the primary advantage of using the mean as her measure of central tendency?
a. It takes information from all of the scores in the distribution
b. It discounts extreme scores
c. It works well with skewed data
d. It works with just about every dataset
e. All of the above
Question 11 Roger is looking to find the central tendency for his dataset. Which of the following is accurate?
a. He can use mean no matter what because it is the most used measure of central tendency
b. He can only use the mean with some datasets so he will have to take a look at his dataset to be sure that it fits the requirements
c. He can only calculate mean with a population so he needs to make sure that his dataset represents a population
d. He can only calculate mean with a sample and so he needs to make sure that his dataset represents a sample
Question 12 Amari has the following dataset: 2, 5, 3, 8, 10, 2, 6, 7, 8, 8, 8, 4, 7, 3, 6. Please calculate the mean. Round to the nearest tenth. Question 13
Misha has the following dataset: 3, 4, 2, 2, 2, 3, 6, 7, 1, 3, 5, 2, 7. What is her median?
Your answer should be a whole number with no decimals.
Question 14 Amari has the following dataset: 2, 5, 3, 8, 10, 2, 6, 7, 8, 8, 8, 4, 7, 3, 6. Please calculate the median.
Your number should be a whole number with no decimals.

Question 15
Orlando is trying to figure out the median for the following dataset: 2, 5, 1, 6, 7. He decides that the median is 1. What error has he made?
He forgot to order the numbers from smallest to largest
He forgot to divide by n
He forgot to divide by N
He forgot to take the mean of the two middle numbers




Question 16
Elise is interested in figuring out central tendency for a nominal variable. Her only choice for measuring central tendency with this type of variable is
mean
median
mode
actually she can choose any of them but only as long as her distribution is normally distributed
Question 17 Jacinta has the following dataset: 2, 3, 1, 4, 2, 3, 3, 2, 1, 2, 5, 6. What is the mode for this dataset?
Your answer should be a whole number with no decimals.










Question 18
Diego has a dataset that includes the following data points: 40, 45, 40, 50, 45, 35, 3, 4. These data were gathered on a ratio scale. He wants his measure of central tendency to include as much information as he can from the numbers collected but he also does not want to give a number that is not representative of the center. What type of central tendency should he use?
a. Mean
b. Median
c. Mode
d. Not enough information is given
Question 19 With a negatively skewed distribution, which of the following is true?
a. The mean, median and mode will be the same
b. The mean will be higher than the median and mode
c. The mean will be lower than the median and mode
d. The median will be lower than the mean and mode
e. You cannot tell just by looking at the distribution graph
Question 20 Which of the following is the correct order of mean, median and mode in an exact symmetrical distribution?
a. Mean, median, mode
b. Median, mean, mode
c. Mode, median mean
d. Mode mean median
e. Mean, median and mode are all at the same point
Question 21 Which situation has gotten the most controversy in regards to what measure of central tendency should be used?
a. Whether or not to use the mean for nominal data
b. Whether or not to use the mean for ordinal data
c. Whether or not to use the mean for interval data
d. Whether or not to use the mean for skewed data
e. Whether or not to use the mean for skewed interval data
Question 22 In regard to the statistical controversy discussed in the PenCast, what is the reasoning of those statisticians who believe that the mean can be used in the controversial situation?
a. They suggest that these statistical analyses are fairly robust (impervious to error) when the intervals are not too different from one another
b. They suggest that the mean continues to be fairly accurate as long as the intervals are not too different from one another
c. Mean can be used for most ‘Likert-type’ scales (e.g., those that ask people to rate like to dislike or agree to disagree)
d. All of the above
Question 23 Dr. Rogers has a symmetrical distribution with nominal data. What type of central tendency should he use if he wants to include as much information as he can from the numbers he collected but also does not want to give a number that is not representative of the center.
a. Mean
b. Median
c. Mode
d. Not enough information is given
Question 1
Katrina has the following dataset: 2, 9, 4, 23, 19, 45, 29, 30, 65. What would f be for the interval 20-29?
Your answer should be a whole number with no decimal places.
Question 2 options: Sandra has a dataset with the following values: 10, 6, 2, 90, 75, 25. What is his range?
Your answer should be a whole number with no decimal places.

Question 3 George has a dataset that he is trying to put together a grouped frequency distribution for. What goal should he follow regarding the number of intervals?
A. He should aim to have about 4 intervals B. He should figure out the intervals before he looks at the data so that he can remain objective. C. He should aim to have intervals that are easily understandable (e.g., 2, 5, 10, etc.) D. All of the above


Question 4
In a frequency distribution graph what goes on the y-axis?
a. Frequency
b. x-value (also known as the scores)
c. fx
d. fx
Question 5 In a frequency distribution graph, the highest bar indicates a. The mean of the frequency distribution
b. The median of the frequency distribution
c. The standard deviation of the frequency distribution
d. X value with the highest frequency






Question 6
Johanna has a data set that begins with the number 70 and ends with the number 210. What should she do differently than Michael whose dataset starts at 0 and ends at 70?
a. Johanna will have two angled lines crossing her y-axis to show that her data do not start at zero whereas Michael’s y-axis is going to start at zero and so his does not required the two angled lines
b. Johanna will have two angled lines crossing her x-axis to show that her data do not start at zero whereas Michael’s x-axis is going to start at zero and so his does not required the two angled lines
c. Johanna will have a large space between the corner of her graph and her first bar to represent the large gap between zero and her first interval whereas Michael’s first bar will be very close to the corner.
d. None of the above because you can’t have a dataset that doesn’t start at zero
Question 7 Maria has the following dataset: 90, 52, 73, 68, 45, 22, 86, 41, 16, 2, 98, 99, 80, 4, 99. She does a grouped frequency distribution graph. She follows the rules that we set up regarding the ideal number of intervals. What interval will have the highest bar?
a. 90-99
b. 40-49
c. 95-99
d. 98-99
e. 76-100
Question 8
What is the purpose of determining central tendency?
a. Getting the general idea of how much variability there is in the dataset
b. Inferring whether there are differences between the treatment group versus the control group
c. Finding the number that best represents the dataset for that variable
d. All of the above are reasons for determining central tendency
Question 9 What are the three forms of central tendency?
a. Standard deviation, mean and median
b. Mean, median and mode
c. Sample, population, mean
d. Sample mean, population mean, mode






Question 10
Kendra is trying to figure out whether or not to use the mean. What is the primary advantage of using the mean as her measure of central tendency?
a. It takes information from all of the scores in the distribution
b. It discounts extreme scores
c. It works well with skewed data
d. It works with just about every dataset
e. All of the above
Question 11 Roger is looking to find the central tendency for his dataset. Which of the following is accurate?
a. He can use mean no matter what because it is the most used measure of central tendency
b. He can only use the mean with some datasets so he will have to take a look at his dataset to be sure that it fits the requirements
c. He can only calculate mean with a population so he needs to make sure that his dataset represents a population
d. He can only calculate mean with a sample and so he needs to make sure that his dataset represents a sample
Question 12 Amari has the following dataset: 2, 5, 3, 8, 10, 2, 6, 7, 8, 8, 8, 4, 7, 3, 6. Please calculate the mean. Round to the nearest tenth. Question 13
Misha has the following dataset: 3, 4, 2, 2, 2, 3, 6, 7, 1, 3, 5, 2, 7. What is her median?
Your answer should be a whole number with no decimals.
Question 14 Amari has the following dataset: 2, 5, 3, 8, 10, 2, 6, 7, 8, 8, 8, 4, 7, 3, 6. Please calculate the median.
Your number should be a whole number with no decimals.

Question 15
Orlando is trying to figure out the median for the following dataset: 2, 5, 1, 6, 7. He decides that the median is 1. What error has he made?
He forgot to order the numbers from smallest to largest
He forgot to divide by n
He forgot to divide by N
He forgot to take the mean of the two middle numbers




Question 16
Elise is interested in figuring out central tendency for a nominal variable. Her only choice for measuring central tendency with this type of variable is
mean
median
mode
actually she can choose any of them but only as long as her distribution is normally distributed
Question 17 Jacinta has the following dataset: 2, 3, 1, 4, 2, 3, 3, 2, 1, 2, 5, 6. What is the mode for this dataset?
Your answer should be a whole number with no decimals.










Question 18
Diego has a dataset that includes the following data points: 40, 45, 40, 50, 45, 35, 3, 4. These data were gathered on a ratio scale. He wants his measure of central tendency to include as much information as he can from the numbers collected but he also does not want to give a number that is not representative of the center. What type of central tendency should he use?
a. Mean
b. Median
c. Mode
d. Not enough information is given
Question 19 With a negatively skewed distribution, which of the following is true?
a. The mean, median and mode will be the same
b. The mean will be higher than the median and mode
c. The mean will be lower than the median and mode
d. The median will be lower than the mean and mode
e. You cannot tell just by looking at the distribution graph
Question 20 Which of the following is the correct order of mean, median and mode in an exact symmetrical distribution?
a. Mean, median, mode
b. Median, mean, mode
c. Mode, median mean
d. Mode mean median
e. Mean, median and mode are all at the same point
Question 21 Which situation has gotten the most controversy in regards to what measure of central tendency should be used?
a. Whether or not to use the mean for nominal data
b. Whether or not to use the mean for ordinal data
c. Whether or not to use the mean for interval data
d. Whether or not to use the mean for skewed data
e. Whether or not to use the mean for skewed interval data
Question 22 In regard to the statistical controversy discussed in the PenCast, what is the reasoning of those statisticians who believe that the mean can be used in the controversial situation?
a. They suggest that these statistical analyses are fairly robust (impervious to error) when the intervals are not too different from one another
b. They suggest that the mean continues to be fairly accurate as long as the intervals are not too different from one another
c. Mean can be used for most ‘Likert-type’ scales (e.g., those that ask people to rate like to dislike or agree to disagree)
d. All of the above
Question 23 Dr. Rogers has a symmetrical distribution with nominal data. What type of central tendency should he use if he wants to include as much information as he can from the numbers he collected but also does not want to give a number that is not representative of the center.
a. Mean
b. Median
c. Mode
d. Not enough information is given
Question 1
Katrina has the following dataset: 2, 9, 4, 23, 19, 45, 29, 30, 65. What would f be for the interval 20-29?
Your answer should be a whole number with no decimal places.
Question 2 options: Sandra has a dataset with the following values: 10, 6, 2, 90, 75, 25. What is his range?
Your answer should be a whole number with no decimal places.

Question 3 George has a dataset that he is trying to put together a grouped frequency distribution for. What goal should he follow regarding the number of intervals?
A. He should aim to have about 4 intervals B. He should figure out the intervals before he looks at the data so that he can remain objective. C. He should aim to have intervals that are easily understandable (e.g., 2, 5, 10, etc.) D. All of the above


Question 4
In a frequency distribution graph what goes on the y-axis?
a. Frequency
b. x-value (also known as the scores)
c. fx
d. fx
Question 5 In a frequency distribution graph, the highest bar indicates a. The mean of the frequency distribution
b. The median of the frequency distribution
c. The standard deviation of the frequency distribution
d. X value with the highest frequency






Question 6
Johanna has a data set that begins with the number 70 and ends with the number 210. What should she do differently than Michael whose dataset starts at 0 and ends at 70?
a. Johanna will have two angled lines crossing her y-axis to show that her data do not start at zero whereas Michael’s y-axis is going to start at zero and so his does not required the two angled lines
b. Johanna will have two angled lines crossing her x-axis to show that her data do not start at zero whereas Michael’s x-axis is going to start at zero and so his does not required the two angled lines
c. Johanna will have a large space between the corner of her graph and her first bar to represent the large gap between zero and her first interval whereas Michael’s first bar will be very close to the corner.
d. None of the above because you can’t have a dataset that doesn’t start at zero
Question 7 Maria has the following dataset: 90, 52, 73, 68, 45, 22, 86, 41, 16, 2, 98, 99, 80, 4, 99. She does a grouped frequency distribution graph. She follows the rules that we set up regarding the ideal number of intervals. What interval will have the highest bar?
a. 90-99
b. 40-49
c. 95-99
d. 98-99
e. 76-100
Question 8
What is the purpose of determining central tendency?
a. Getting the general idea of how much variability there is in the dataset
b. Inferring whether there are differences between the treatment group versus the control group
c. Finding the number that best represents the dataset for that variable
d. All of the above are reasons for determining central tendency
Question 9 What are the three forms of central tendency?
a. Standard deviation, mean and median
b. Mean, median and mode
c. Sample, population, mean
d. Sample mean, population mean, mode






Question 10
Kendra is trying to figure out whether or not to use the mean. What is the primary advantage of using the mean as her measure of central tendency?
a. It takes information from all of the scores in the distribution
b. It discounts extreme scores
c. It works well with skewed data
d. It works with just about every dataset
e. All of the above
Question 11 Roger is looking to find the central tendency for his dataset. Which of the following is accurate?
a. He can use mean no matter what because it is the most used measure of central tendency
b. He can only use the mean with some datasets so he will have to take a look at his dataset to be sure that it fits the requirements
c. He can only calculate mean with a population so he needs to make sure that his dataset represents a population
d. He can only calculate mean with a sample and so he needs to make sure that his dataset represents a sample
Question 12 Amari has the following dataset: 2, 5, 3, 8, 10, 2, 6, 7, 8, 8, 8, 4, 7, 3, 6. Please calculate the mean. Round to the nearest tenth. Question 13
Misha has the following dataset: 3, 4, 2, 2, 2, 3, 6, 7, 1, 3, 5, 2, 7. What is her median?
Your answer should be a whole number with no decimals.
Question 14 Amari has the following dataset: 2, 5, 3, 8, 10, 2, 6, 7, 8, 8, 8, 4, 7, 3, 6. Please calculate the median.
Your number should be a whole number with no decimals.

Question 15
Orlando is trying to figure out the median for the following dataset: 2, 5, 1, 6, 7. He decides that the median is 1. What error has he made?
He forgot to order the numbers from smallest to largest
He forgot to divide by n
He forgot to divide by N
He forgot to take the mean of the two middle numbers




Question 16
Elise is interested in figuring out central tendency for a nominal variable. Her only choice for measuring central tendency with this type of variable is
mean
median
mode
actually she can choose any of them but only as long as her distribution is normally distributed
Question 17 Jacinta has the following dataset: 2, 3, 1, 4, 2, 3, 3, 2, 1, 2, 5, 6. What is the mode for this dataset?
Your answer should be a whole number with no decimals.










Question 18
Diego has a dataset that includes the following data points: 40, 45, 40, 50, 45, 35, 3, 4. These data were gathered on a ratio scale. He wants his measure of central tendency to include as much information as he can from the numbers collected but he also does not want to give a number that is not representative of the center. What type of central tendency should he use?
a. Mean
b. Median
c. Mode
d. Not enough information is given
Question 19 With a negatively skewed distribution, which of the following is true?
a. The mean, median and mode will be the same
b. The mean will be higher than the median and mode
c. The mean will be lower than the median and mode
d. The median will be lower than the mean and mode
e. You cannot tell just by looking at the distribution graph
Question 20 Which of the following is the correct order of mean, median and mode in an exact symmetrical distribution?
a. Mean, median, mode
b. Median, mean, mode
c. Mode, median mean
d. Mode mean median
e. Mean, median and mode are all at the same point
Question 21 Which situation has gotten the most controversy in regards to what measure of central tendency should be used?
a. Whether or not to use the mean for nominal data
b. Whether or not to use the mean for ordinal data
c. Whether or not to use the mean for interval data
d. Whether or not to use the mean for skewed data
e. Whether or not to use the mean for skewed interval data
Question 22 In regard to the statistical controversy discussed in the PenCast, what is the reasoning of those statisticians who believe that the mean can be used in the controversial situation?
a. They suggest that these statistical analyses are fairly robust (impervious to error) when the intervals are not too different from one another
b. They suggest that the mean continues to be fairly accurate as long as the intervals are not too different from one another
c. Mean can be used for most ‘Likert-type’ scales (e.g., those that ask people to rate like to dislike or agree to disagree)
d. All of the above
Question 23 Dr. Rogers has a symmetrical distribution with nominal data. What type of central tendency should he use if he wants to include as much information as he can from the numbers he collected but also does not want to give a number that is not representative of the center.
a. Mean
b. Median
c. Mode
d. Not enough information is given

Explanation / Answer

1) Frequency: Numbers fall in within interval range

2) Range= Max-Min

Max=90

Min=2

Range= 90-2 = 88

Range Frequency 20-29 2

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