MULTIPLE CHOICE Choose the one alternative that best completes the statement or

Question

MULTIPLE CHOICE Choose the one alternative that best completes the statement or answers the question Provide an appropriate response. 1) Describe the shape of the histogram. The data set: Pick-Three lottery results for 10 consecutive weeks 3 67606178 575915399 2 23088402 4 A) skewed to the right C) uniform B) skewed to the left D) symmetric 2) 2) For the distribution drawn here, identify the mean, median, and mode. A) A- mean, B mode, C median C)A-mode, B- median, C- mean B) A mode, B- mean, C- median D) A- median, B- mode, C- mean 3) The repair costs for five cars which were crashed by a safety testing organization were as follows 3)- $100, $150, $200, $250, and $150. Find the mean cost of repair A) $160 B) $170 )$180 D) $140 Which measure of central tendency may not exist for all numeric data sets? A) Median B) Mode )Mean D) Midrange 5) The median of a data set for a variable is the data value that A) Appears the most often B) Lies in the middle of the data when the data is arranged in ascending order. C Is the average, that is, the sum of all the data values of the variable divided by the number of observations in the data set? D) None of these

Explanation / Answer

1) answer c) is correct, because the frequency of each class is same, the class frequecies are 0-1,2-3,4-5,6-7,8-9 and the corresponding frequencies are 6,6,6,6,6.

2) answer c) is correct, because the above curve shows that negatively skewed distribution, in this distribution mode>median>mean or mean<median<mode.

3) the mean cost of repair is 100+150+200+250+150/5 = $170, option b) is correct

4) option b) is correct, because mode is not based on all observations

5) option b) correct, because of median lies middle of the data whe the data is arranged in ascending or descending order. If the data is odd then median is middle position of the data and if the data is even then the median is the average of middle posion values after the data is arranged into ascending order.

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