If the standard deviation of x is 18, the covariance of x and y is 120, the coefficient r = 0.90, ...

If the standard deviation of x is 18, the covariance of x and y is 120, the coefficient r = 0.90, then the standard deviation of y is 54.87.
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Q. 2

If the coefficient of correlation r = 1, then the best-fit linear equation will actually include all of the observations.
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Q. 3

When the standard deviation is expressed as a percentage of the mean, the result is the coefficient of correlation.
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Q. 4

A perfect straight line sloping upward would produce a correlation coefficient value of 1.0.
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Q. 5

The variance is a measure of the linear relationship between two variables.
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Q. 6

The coefficient of correlation r is a number that indicates the direction and the strength of the linear relationship between the dependent variable y and the independent variable x.
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Q. 7

Three measures of the linear relationship between x and y are the coefficient of correlation, the coefficient of determination, and the coefficient of variation.
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