Copy (2) of KatrinaManning_MM207_Unit8

# Copy (2) of KatrinaManning_MM207_Unit8 -...

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MM207 Unit 8 Chapter 9 Project  Total points are 30. Points are included with each problem. Included with each section or problem are reference examples and end of section exercises that  can be used as a guide. Be sure to show your work in case partial credit is awarded. To receive   full credit, work must be shown if applicable. See the instructions at the end of the project for copying a graph from Excel into a Word  document. The technology manual that was packaged with your book has an Excel section that  can help with the graphing. Section 9.1: Correlation Construct a scatter plot using excel for the given data. Determine whether there is a positive  linear correlation, negative linear correlation, or no linear correlation. Complete the table and  find the correlation coefficient r. The data for x and y is shown below.  x 11 -6 8 -3 -2 1 5 -5 6 7 y -5 -3 4 1 -1 -2 0 2 3 -4 a:  Scatter plot  (3 points) b:  Type of correlation (positive linear correlation, negative linear correlation, or  no linear correlation)  (2 points) no linear correlation 1

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MM207 Unit 8 Chapter 9 Project  c:  Complete the table and find the correlation coefficient r. (5 points) x y xy x 2 y 2 11 -5 -55 121 25 -6 -3 18 36 9 8 4 32 64 16 -3 1 -3 9 1 -2 -1 2 4 1 1 -2 -2 1 4 5 0 0 25 0 -5 2 -10 25 4 6 3 18 36 9 7 -4 -28 49 16 22 -5 -28 370 85 Use the last row of the table to show the column totals. n = 10
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## This note was uploaded on 03/26/2011 for the course MM 207 taught by Professor Hill during the Spring '08 term at Kaplan University.

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Copy (2) of KatrinaManning_MM207_Unit8 -...

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