Match each scatterplot shown below with one of the four specified correlation coefficients. K 8 800 0 8 00 a 0 2° • 80 O O CIDO ° o a. 0.93 b. -0.56 c. 0.08 d. -1.00 0 o 800 0 8 ° о
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- A researcher finds a correlation (r) of 0.50 between height and weight. what variation in weight can be explained by the variation in height?if the correlation coefficient r is equal to 0.568, find the coefficient of nondetermination.L4Q6.What correlation can be observed between x and y in the given figure?
- The correlation of 4 pairs of observations is –0.94. What is E ? Sy Sx А. —1.03 В. —1.75 С. - 1.38 D. -2.82Which of the following correlation coefficients indicate the strongest linear relationship between two variables x and y? rxy = 0.5 rxy = 0.09 rxy = − 0.6 rxy = 0Find r2 if the correlation coefficient is 0.92. Only round your final answer to 2 decimal places.
- Give the best description of the correlation between V and I, assuming that a random voltage (V) supplies a random current (I) through a constant resistive load. a. b. C. d. The correlation is positive. The correlation is negative. The correlation is equal to 1. The correlation is equal to -1.Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axes are the same for each diagram. (a) r = -1 (b) r= -0.933 (c) r=-0.523 (d) r= -0.038 Click the icon to view the scatter diagrams. r= -0.933 r= -1 r= -0.523 r=-0.038 Drag each of the r-values given above into the appropriate area below. Q Response Explanatory Response Explanatory Q *** Response Explanatory Q Response ExplanatoryAccurate the correlation coefficient r, letting Row 1 represent the x-values and Row 2 the y-values. Then calculate it again, letting Row 2 represent the x-values and Row 1 the y-values. What effect does switching the variables have on r? Row 1: 17, 27,30,49,54,60,70 Row 2: 190,134,121,159,158,172,173 Calculate the correlation coefficient r, letting Row 1 represent the x-values and Row 2 the y-values. r=
- Find the Covariance and the Correlation between X and YMatch the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axes are the same for each diagram. (a) r= - 0.025 (b) r= - 0.969 (c) r= - 0.787 (d) r= - Click the icon to view the scatter diagrams. r= - 0.025 r= - 0.969| r= - 1 r= - 0.787 each of the r-values given above into the appropriate area below. Explanatory Explanatory Explanatory Explanatory Response Response Response ResponseCalculate Pearson's correlation coefficient r. Then explain the direction and strength of the relationship based on the r.