Question

In: Statistics and Probability

The manager of the local Walmart Superright is studying the number of items purchased by customers...

The manager of the local Walmart Superright 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. mean and median (Round "Mean" to 1 decimal place.)

b. find the range and the standard deviation of the number of items (Round "Standard deviation" to 3 decimal places.)

  1. Organize the number of items into a frequency distribution. (Round your class interval to 1 decimal place.)

class-Midpoint-frequency

3.5 up to

  1. Find the mean and the standard deviation of the data organized into a frequency distribution. Compare these values with those computed in part (a). (Round "squared deviations" to the nearest whole numbers and "Standard deviations" to 3 decimal places.)

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orchestra answered 2 years ago
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