Answered: A clothing retailer is interested in…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A clothing retailer is interested in the average waist size of men. A sample is taken with the results given below.

Column1

Mean 41.39

Standard Deviation 1.033

Median 41

Mode 41

Standard Deviation 5.466

Sample Variance 29.88

Kurtosis 0.474

Skewness 0.608

Range 21

Minimum 32

Maximum 53

Sum 1159

Count 60

Confidence level (95.0%) 2.119

What is the sample statistic?

What is the point estimate for the average waist size?

What is the level of confidence as a decimal?

What is the margin of error?

What is the confidence interval?

Definition Definition Measure of central tendency that is the value that occurs most frequently in a data set. A data set may have more than one mode if multiple categories repeat an equal number of times. For example, in a data set with five item—3, 5, 5, 29, 473—the mode is 5 because it occurs twice and no other value occurs more than once. On a histogram or bar chart, the element with the highest bar represents the mode. Therefore, the mode is sometimes considered the most popular option. The mode is useful for nominal or categorical data (e.g., the most common color car that users purchase), but it is problematic for continuous data because it is more likely not to have any value that is more frequent than the other.

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