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Find the mean and the median of the number of items

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Reference no: EM13867669

The manager of the local Walmart Supercenter is studying the number of items purchased by customers in the evening hours. Listed below is the number of items for a sample of 30 customers.

15

8

6

9

9

4

18

10

10

12

12

4

7

8

12

10

10

11

9

13

5

6

11

14

5

6

6

5

13

5

a. Find the mean and the median of the number of items.

b. Find the range and the standard deviation of the number of items.

c. Organize the number of items into a frequency distribution. You may want to review the guidelines in Chapter 2 for establishing the class interval and the number of classes.

d. Find the mean and the standard deviation of the data organized into a frequency distribution. Compare these values with those computed in part (a). Why are they different?

Reference no: EM13867669

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