Assuming a linear relationship between X and Y, if the ...

[stephzh]

Assuming a linear relationship between X and Y, if the coefficient of correlation (r) equals -0.75, this means that:
 a. there is very weak correlation.
  b. the slope b1 is = -0.75.
  c. the value of X is always greater than the value of Y.
  d. None of these choices are true.

Question 2

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.
  Indicate whether the statement is true or false

[srodz]

Answer to Question 1

B

Answer to Question 2

F

[stephzh]

Thanks for the timely response, appreciate it

[helenmarkerine]

Gracias!