What is the purpose of a regression line?

A- to connect all the points
B- to show the general tendency of the points in a scatterplot
C- to provide a scale for the x-coordinates of the points in a scatterplot
D- to provide a scale for the y-coordinates of the points in a scatterplot

20 points! plz now and fast plzz im so over do! which measure will you calculate how much the babies' weights vary, on average, from their mean weight? thirteen babies were born in a hospital on the same day. the weights of the babies (in pounds) were 5.5, 6.4, 5.8, 8.1, 9, 7.6, 8.2, 7.2, 8.8, 6.6, 5.4, 7.7, and 6.9. a. mode b. interquartile range c. range d. mean absolute deviation e. quartile