3.Which of the following is not a goal of descriptive statistics? A)Summarizing data B)Displaying aspects of the collected data C)Reporting numerical findings D)Estimating characteristics of the population ANSWER:

D4.When grouping data into classes it is recommended that to have:

5.A line graph that connects points that represent the cumulative percentage of observations below the upper limit of each class interval in a cumulative frequency distribution is known as a(n):

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Econ 245 A01 Fall 2015 Page 3 6.The total area of bars in a relative frequency histogram:

C 7.If you are interested in comparing variation in sales for small and large stores selling similar goods, which of the following is the most appropriate measure of dispersion? A)The range B)The interquartile range C)The standard deviation D)The coefficient of variation ANSWER:

D8.Suppose you are told that the mean sample of numbers is below the median. What does this information suggest?

C