2. A bank branch located in a commercial district of a city has developed an improved process for servingcustomers during the 12:00 noon to 1:00 pm peak lunch period. The time in minutes (operationally definedas the time a client enters the line to when he or she is served) of all customers during this hour is recordedover a period of one week. A random sample of 15 customers is selected and the results are as follows:4.21 5.55 3.02 5.13 4.77 2.34 3.54 3.20 4.50 6.10 0.38 5.12 6.46 6.19 3.79Compute the mean, median, first quartile, and third quartile.Compute the variance, standard deviation, range, and interquartile range.2.12.22.3Are the data skewed? If so, how?

Given: Sample size, n=15 Time, X 4.21 5.55 3.02 5.13 4.77 2.34 3.54 3.2 4.5…

Answered: Compute the mean, median, first…

Compute the mean, median, first quartile, and third quartile. Compute the variance, standard deviation, range, and interquartile range. Are the data skewed? If so, how?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Question

2. A bank branch located in a commercial district of a city has developed an improved process for serving
customers during the 12:00 noon to 1:00 pm peak lunch period. The time in minutes (operationally defined
as the time a client enters the line to when he or she is served) of all customers during this hour is recorded
over a period of one week. A random sample of 15 customers is selected and the results are as follows:
4.21 5.55 3.02 5.13 4.77 2.34 3.54 3.20 4.50 6.10 0.38 5.12 6.46 6.19 3.79
Compute the mean, median, first quartile, and third quartile.
Compute the variance, standard deviation, range, and interquartile range.
2.1
2.2
2.3
Are the data skewed? If so, how?

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