Which of the following are true about the correlation coefficient r? Select one or more: If the correlation coefficient is positive, the slope of the regression line will also be positive. If the correlation coefficient is close to 0, that means there is a strong linear relationship between the two variables. The correlation coefficient is always between -1 and +1. The correlation coefficient will change if we change the units of measure. The correlation coefficient is always greater than 0. If the correlation coefficient is +1, then the slope of the regression line is also +1.
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The correlation coefficient is a statistical measure that calculates the strength of the relationship between the relative movements of two variables. The values of r range from -1 to +1, where +1 indicates a perfect positive linear relationship, -1 indicates a Show moreā¦
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'Which of the following are true about the correlation coefficient r? Select all that apply: Select one or more: The correlation coefficient is always greater than 0. The correlation coefficient is always between -1 and +1. The correlation coefficient will change if we change the units of measure. If the correlation coefficient is positive, the slope of the regression line will also be positive_ If the correlation coefficient is +1, then the slope of the regression line is also +1. If the correlation coefficient is close to 0, that means there is a strong linear relationship between the two variables.'
Qudsiya A.
Which of the following statements about the correlation coefficient is true? A. The correlation coefficient and the slope of the regression line may have opposite signs. B. A correlation of 1 indicates a perfect cause-and-effect relationship between the variables. C. Correlations of +0.87 and -0.87 indicate the same degree of clustering around the regression line. D. Correlation applies equally well to quantitative and categorical data. E. A correlation of 0 shows little or no association between two variables.
Jason H.
Which of the following statements about correlation $r$ is true? (A) A correlation of o.2 means that $20 \%$ of the points are highly correlated. (B) Perfect correlation, that is, when the points lie exactly on a straight line, results in $r=0$. (C) Correlation is not affected by which variable is called $x$ and which is called $y$. (D) Correlation is not affected by extreme values. (E) A correlation of o.75 indicates a relationship that is 3 times as linear as one for which the correlation is only $0.25 .$
Exploring Two-Variable Data
Quiz 9
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