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Statistics / Statistical Techniques in Business and Economics 15 / Chapter 2 / Problem 34

Statistical Techniques in Business and Economics | 15th Edition | ISBN: 9780073401805 | Authors: Douglas Lind, William Marchal, Samuel Wathen

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The Journal of Finance made its content available on the Internet starting in July of

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QUESTION:

The Journal of Finance made its content available on the Internet starting in July of 2005. The table below shows the number of times a monthly version was downloaded and the number of articles that were viewed during each month. Suppose you wish to make a frequency distribution of the number of downloads.

a. How many classes would you propose?

b. What class interval would you suggest?

c. What quantity would you use for the lower limit of the initial class?

d. Using your responses to parts (a), (b), and (c), create a frequency distribution.

e. Identify the appearance of the frequency distribution.

Questions & Answers

QUESTION:

The Journal of Finance made its content available on the Internet starting in July of 2005. The table below shows the number of times a monthly version was downloaded and the number of articles that were viewed during each month. Suppose you wish to make a frequency distribution of the number of downloads.

a. How many classes would you propose?

b. What class interval would you suggest?

c. What quantity would you use for the lower limit of the initial class?

d. Using your responses to parts (a), (b), and (c), create a frequency distribution.

e. Identify the appearance of the frequency distribution.

ANSWER:

Step 1 of 5

a. If is the number of classes and is the number of observations, then for class intervals, select the smallest such that .

In this case, . If , then which is less than . So, will not work. If , then which is greater than . So, number of classes will be 6 .

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