2 Subtitle Subtle Em.... Emp Normal No Spaci... Heading 1 aph b. generate square

Question

2 Subtitle Subtle Em.... Emp Normal No Spaci... Heading 1 aph b. generate squared units of measurement c. emphasize the contributions of larger deviations. d. attain all of the above. 15. Five children are tested for IQ and their scores are: 110, 160, 100, 100, 110. What is the best way to descibe the central tendency of these scores? a the mode b. the median c. the mean d. the range 16. Knowing the standard deviation of a set of scores, it is possible to calculate a. range b. variance c. the mean d. the frequency distribution 17. When summarizing data, why is it important to report both the mean and the standard deviation? a. two sets of data could have the same mean but different amounts of vanability b. this way both descriptive and inferential statistics are covered c. this way the null hypothesis can be evaluated d. this enables the researcher to avoid Type I and Type ll errors 18. Indicate which one of the following sets of observations has the larger standard deviation (Calculations aren't neces answer this question.) a. 4045, 4050, 4055 b. 5,20, 35 c. 530, 540, 550 d. 988, 1000, 1012 19 If the distibution of weekly studv times reported bycolece students has a mean of 25 hours with a standard deviatior

Explanation / Answer

a) The best way to describe the tendency of discrete values is single value that repesents the whole and give the information about the set of data by reconisinging the central position within that set of data.

The mean is most likely central measures of tendency .Here mean is the most likely measure of central tendency.Therefore answer is c)

b)Variance can be compute from the standard deviation as we get variance by squaring standard deviation.therefore answer is b)

c)while mean is the single value that represents the set of data values, but there are posibility of outlier being present which does not represent the data. Therefore to measure of spread of the data variance and the standard deviation is reported.therefore answer is a)

d)The b) has the larger standard deviation beacuse the numbers are spread out than other sets of data.

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