In a regression problem, a coefficient of determination 0.90 ...

[Tazate]

In a regression problem, a coefficient of determination 0.90 indicates that:
 
  A) 90 of the y values are positive.
  B) 90 of the variation in y can be explained by the regression line.
  C) 90 of the x values are equal.
  D) 90 of the variation in x can be explained by the regression line.

Question 2

The skewness is zero for all distributions, such as the normal, that are symmetric about their mean.
 
  Indicate whether the statement is true or false

[wuly]

Answer to Question 1

B

Answer to Question 2

TRUE

[Tazate]

Excellent

[jamesnevil303]

Gracias!