0 no no correlation correlation 5 increasing degree

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Unformatted text preview: Correlation -.5 Increasing degree of Increasing negative correlation negative 7 - 13 13 0 +.5 +1.0 Increasing degree of Increasing positive correlation positive Coefficient of Correlation Values STAT 2023 - Holbrook Perfect Perfect Negative Correlation Correlation -1.0 No No Correlation Correlation -.5 Increasing degree of Increasing negative correlation negative 7 - 14 14 Perfect Perfect Positive Correlation Correlation 0 +.5 +1.0 Increasing degree of Increasing positive correlation positive STAT 2023 - Holbrook Coefficient of Correlation Examples r=1 Y Y r = -1 X Y r = .89 Y X 7 - 15 15 X r=0 X Warning! STAT 2023 - Holbrook 1. Correlation does NOT imply causation. 2. See stork example on pages 177. See 7 - 16 16 Pages 125-126 – First edition. Correlation Example STAT 2023 - Holbrook You’re a marketing analyst for Hasbro You’re Toys. You gather the following data: Toys. Ad $ Sales (Units) 1 1 2 1 3 2 4 2 5 4 Find the correlation Find coefficient. coefficient. 7 - 17 17 Solution Table ST...
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This note was uploaded on 12/07/2011 for the course STA 2023 taught by Professor Staff during the Fall '11 term at Santa Fe College.

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