What is the approximate correlation between these two variables? 1.00 0.75 0.50 0.25 0.00 y -1.0 -0.5 0.0 0.5 1.0 x Figure caption: Scatter plot of two variables, x and y Select one: a. 0 b. 0.5 c. -0.4 d. 0.9
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Match the graph with the following three estimated correlation coefficients (r) of the two numerical variables, x and y. (1) r = 0.65 matches figure (2) r = 0.47 matches figure (3) r = -0.8 matches figure A B C 1.0 0.8 0.6 0.4 0.2 0 0 0.2 0.4 0.6 0.8 1.0 X 0 0.2 0.4 0.6 0.8 1.0 X 0 0.2 0.4 0.6 0.8 1.0 X
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What is the correlation coefficient for the data set below? x: 3.2, 6.2, 8.4, 14, 20.8, 35.1 y: 0.5, 4.7, 9.1, 22.1, 25.7, 44.1 a) 0.5 b) 0.7 c) 0.8 d) 0.99
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Which of the following correlation coefficients indicates the strongest relationship between two variables? a. -.90 b. -50 c. +.80 d. +.25
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