The table below gives the population by sex and year of the four regions of Mlardalen over the neriod 2015-2021 (the data is from SCB). A. For each of the groups, do a scatter plot. For which cases does the plots suggest the use of a simple linear regression model? B. Calculate estimates of the slopes and intercepts of the regression lines. C. Calculate estimates of the standard deviations. D. Compute the coefficients of determination. Using this as a measure, which case is best modelled by linear regression