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edugen wieypus.com WileyPLUS Mann, Introductory Statistics, 9e Gradebook ORION D

ID: 2926120 • Letter: E

Question

edugen wieypus.com WileyPLUS Mann, Introductory Statistics, 9e Gradebook ORION Downloadable eTextbook nt Chapter 03, Section 3.2, Problem 033 The following data give the prices of seven textbooks randomly selected from a university bookstore $91 $176 $108 $117 $52 $165 $145 a. Find the mean for these data. Calculate the deviations of the data values from the mean. is the sum of these deviations zero? Mean $ Deviation from the mean for $176- Suh, of these deviations . b. Calculate the range, variance, and standard deviation. [Round your answers to 2 decimal places. Range . Variance Standard deviation Click if you would liketo Show work for this questions OpenShoy work neAsns.ne . Poner 2000-2012 20hn with Sons.Inc. All Rights Reserved. A Division of Joh 2 3 4 6 8

Explanation / Answer

The statistical software output for this problem is:

Summary statistics:

Hence,

a) Mean = 122

Deviation = 176 - 122 = 54

Sum of these deviations = 0

b) Range = 224

Variance = 1896

Standard deviation = 43.54

Column Mean Range Variance Std. dev. var18 122 124 1896 43.543082