he table shows the number of absences,x

x, in a class and the final exam grade,y

y, for seven students.

x

x1026433y

y95909055708085

(a) Predict the final exam grade for 5 absences.

Round answer to the nearest whole number.

(b) The answer in part (a) is an

. Write interpolation or extrapolation in the box. Do not use capital letter. Correct spelling required.

(c) The coefficient of determination is

%.Give answer as a percent rounded to one decimal place. Do not write the % sign.

(d) According to the coefficient of determination in part (c),

%of the variation of final exam grades is unexplained and is due to other factors. Give answer as a percent rounded to one decimal place. Do not write the % sign.