Question 1176844
usng the alcula statistical calculator, i get the following result.


<img src = "http://theo.x10hosting.com/2021/031401.jpg" >


placing the data on an excel spreadsheet, i get the following result.


<img src = "http://theo.x10hosting.com/2021/031402.jpg" >


the linear regression formula was rounded to:


y = 199.78 * x + 5364.96


the same equation could also be shown as:


y = 5364.96 + 199.78 * x


the base year is 1994 which corresponds to x = 0.


the value of the investment in 1994 is estimated to be 5364.96 based on the regression formula.


that would be the y-intercept on the graph which is the value of y when x = 0.


the average increase in the investment per year would be 199.78 based on the regression formula.


the format of the regression formula is a straight line.
the general form of the straight line is y = mx + b.
m is the slope
b is the y-intercept.


the slope is the average change per year.
the y-intercept is the value of y when the value of x = 0.
the value of x = 0 corresponds to the year 1994.