When the mean value of the dependent variable is independent of variation in the independent variable, the slope of the regression line is:

zero

Step-by-step explanation:

The optimally fitted straight line via the locations and points on a graph is determined via linear regression. You may use regression equations to see if your data can indeed be fitted into a formula. If you want to create assumptions from your data, either future forecasts or indicators of previous behavior, using the Regression equation is highly beneficial.

The regression line is expressed as:

where;

= dependent variable

a = intercept

b = slope

= independent variable

So, when is independent of the variation of , it means that does not linearly depend on . Thus, the slope of the regression will be zero.

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*

answer: i guess 5 units?

step-by-step explanation: