Question

Which of the following are true about the correlation coefficient r? Select one or more:

If the correlation coefficient is +1, then the slope of the regression line is also +1.

The correlation coefficient is always greater than 0.

If the correlation coefficient is close to 0, that means there is a strong linear relationship between the two variables.

The correlation coefficient will change if we change the units of measure.

The correlation coefficient is always between -1 and +1.

If the correlation coefficient is positive, the slope of the regression line will also be positive.

Answer 1

A correlation coefficient close to zero

Step-by-step explanation:

This makes linear regression unreasonable because the correlation coefficient shows how related the data points are, -1 and 1 being very strong and 0 being uncorrelated. So the line of best fit would not make sense because the data points are random in relation to one another.

Explanation:

Answer 2

Which is the output of the formula =AND(12>6;6>3;3>9)?

A.

TRUE

B.

FALSE

C.

12

D.

9

Explanation: