Ateacher wants to find out the average number of weekly reading hours of her students. she noted the number of reading hours of 5 of her students as shown below: 5, 3, 2, 1, 4 which measure of central tendency is most appropriate for this situation, and what is its value? either the mean or median; both are 3 either the mean or median; both are 2 only the median; 3 only the mean; 2

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?