Search for bivariate data (in magazine or in internet) that can be closely modelled by a linear equation.
a. Draw a scatter diagram of the data.
b. Find the equation of the least squares line and the linear coefficient for the data.
c. Graph the least squares line on the scatter diagram in letter a.
d. Use the equation of the least squares line to predict a range value for a specific
domain value.

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?