Explanation Given: The group of Data Items, 9,5,9,5,9,5,9,5. Formula used: s = ( x − x ¯ ) 2 n − 1 Where; s denotes Standard Deviation, x denotes data item, x ¯ denotes mean and n denotes number of data items Mean X ¯= ∑ x n Calculation: Compute the Mean as shown below: X ¯ = ∑ x n = 9 + 5 + 9 + 5 + 9 + 5 + 9 + 5 8 = 56 8 = 7 Prepare the table showing the sum of the square of deviation from mean as shown below: Data Item x Deviation: Data Item – Mean ( x - x ¯ ) ( Deviation ) 2 ( Data Item − Mean ) 2 ( x − x ¯ ) 2 9 9 − 7 = 2 ( 2 ) 2 = 4 5 5 − 7 = − 2 ( − 2 ) 2 = 4 9 9 −</

Thinking Mathematically, Books a la Carte Edition plus MyLab Math with Pearson eText -- Access Card Package, 4/e (7th Edition)

7th Edition

ISBN: 9780135222249

Author: Robert F. Blitzer

Publisher: PEARSON

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Chapter 12.3, Problem 25E

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To calculate: The Standard Deviation for the given group data items.

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Chapter 12.3, Problem 24E

Chapter 12.3, Problem 26E

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Chapter 12 Solutions

Thinking Mathematically, Books a la Carte Edition plus MyLab Math with Pearson eText -- Access Card Package, 4/e (7th Edition)

Ch. 12.1 - CHECK POINT 1 A city government wants to conduct a...Ch. 12.1 - CHECK POINT 2 Explain why the sampling technique...Ch. 12.1 - CHECK POINT 3 Construct a frequency distribution...Ch. 12.1 - CHECK POINT 4 Use the classes in Table 12.3 to...Ch. 12.1 - CHECKPOINTS 5 Construct a stem-and-leaf plot for...Ch. 12.1 - A sample obtained in such a way that every member...Ch. 12.1 - Prob. 2CVC Ch. 12.1 - Fill in each blank so that the resulting statement...Ch. 12.1 - 4. Data can be displayed using a bar graph with...Ch. 12.1 - Prob. 5CVC

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The Standard Deviation for the given group data items.

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