Shown below are the scatter plots for four different data sets. Answer the questions that follow. The same response may be the correct answer for more than one question. 1. Which data set shows the least evidence of a linear relationship? 2. For which data set does the correlation coefficient r appear to be equal to 1? 3. For which data set is the correlation coefficient r closest to -1?
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Shown below are the scatter plots for four different data sets. Answer the questions that follow. The same response may be the correct answer for more than one question. 1. Which data set shows the least evidence of a linear relationship? 2. For which data set is the correlation coefficient r closest to -1? 3. For which data set does the correlation coefficient r appear to be equal to 1?
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Below are four bivariate data sets and the scatter plot for each. (Note that each scatter plot is displayed on the same scale. Each data set is made up of sample values drawn from a population.) Figure 1: Figure 2: Figure 3: Figure 4: Answer the following questions about the relationships between pairs of variables and the values of r, the sample correlation coefficient. The same response may be the correct answer for more than one question. Which data set has an apparent positive, but not perfect linear relationship between its two variables? Choose one. Which data set indicates the strongest negative linear relationship between its two variables? Choose one. For which data set is the sample correlation coefficient equal to -1? Choose one. For which data set is the sample correlation coefficient closest to 0? Choose one.
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Shown below are the scatter plots for four different data sets. Answer the questions that follow. The same response may be the correct answer for more than one question. Which data set indicates the strongest positive linear relationship between its two variables? Choose one For which data set is the correlation coefficient r closest to 0? Choose one For which data set is the correlation coefficient r closest to -1? Choose one
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