need help with these multiple choice questions realting Regression Correlationthank you

QUESTION 1

1. Why are linear regressions useful?

a.Because all natural phenomena are linear.

b.Because most natural processes are linear.

c.Because non-linear natural processes are approximately linearon a large enough or small enough scale.

d.Becausedata from non-linear natural processes can still be used to cerate a line of best fit.

QUESTION 2

1. Consider the following data, representing money spent on foodper day, over the course of a week: $2, $9, $6, $15, $23, $45, $52. If a linear regression were made describing this data, what could be said about the slope?

a.It is near zero.

b.The relationship is non-linear.

c.It is positive.

d.It is negative.