=+226 C hapt e r 5 ■ Summarizing Bivariate Data proportion of the variability in telomere length? Justify your answer.

5.45 The article “Cost-Effectiveness in Public Education”

(Chance [1995]: 38–41) reported that for a regression of y 5 average SAT score on x 5 expenditure per pupil, based on data from n 5 44 New Jersey school districts, a 5 766, b 5 0.015, r 2 5 .160, and se 5 53.7.