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Multiple choice: Select the best answer for Exercises 27 to 32. The figure below is a
Chapter 3, Problem 31(choose chapter or problem)
Multiple choice: Select the best answer for Exercises 27 to 32. The figure below is a scatterplot of reading test scores against IQ test scores for 14 fifth-grade children. There is one low outlier in the plot. What effect does this low outlier have on the correlation? (a) It makes the correlation closer to 1. (b) It makes the correlation closer to 0 but still positive. (c) It makes the correlation equal to 0. (d) It makes the correlation negative. (e) It has no effect on the correlation. Childs IQ test score 90 95 100 105 110 115 120 125 130 135 140 145 150 120 110 100 90 80 70 60 50 40 30 20 1
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QUESTION:
Multiple choice: Select the best answer for Exercises 27 to 32. The figure below is a scatterplot of reading test scores against IQ test scores for 14 fifth-grade children. There is one low outlier in the plot. What effect does this low outlier have on the correlation? (a) It makes the correlation closer to 1. (b) It makes the correlation closer to 0 but still positive. (c) It makes the correlation equal to 0. (d) It makes the correlation negative. (e) It has no effect on the correlation. Childs IQ test score 90 95 100 105 110 115 120 125 130 135 140 145 150 120 110 100 90 80 70 60 50 40 30 20 1
ANSWER:Step 1 of 2
Given,
No. of fifth-grade children,
We have to find the effect of the low outlier on the correlation between reading test scores and IQ test scores: