This document presents a regression analysis of sales data, providing insights into the relationship between variables and forecasting sales for March 2016. Written as part of a statistics course, this analysis assumes the data dates back to 2015.
Extract
[...] 4 The data has been entered into the calculator Point Cloud: The coordinates of the mean point are The equation of the linear regression line is: We replace part 6.5 in the equation found in the previous question and we get: Or the y-coordinate of the midpoint is . Approximately, we can therefore assert that the midpoint belongs to the regression line of adjustment. The table of the statement does not tell us in what year the readings were taken? So it is not possible to answer the question. However, we will answer this by assuming that the data dates back to 2015. March 2016 would then be We get Thus, in March 2016 there should be approximately 2123 sales. [...]
