A Popular Nationwide Standardized Test Taken By High School Juniors And Sensors May Or May Not Measure Academic Potenti 1 (31.7 KiB) Viewed 82 times
A Popular Nationwide Standardized Test Taken By High School Juniors And Sensors May Or May Not Measure Academic Potenti 2 (7.42 KiB) Viewed 82 times
A popular, nationwide standardized test taken by high-school juniors and sensors may or may not measure academic potential, but we can nonetheless examine the relationship between scores on this test and performance in college. We have chosen a random sample of fifteen students just finishing their first year of college, and for each student we've recorded her score on this standardized test (from 400 to 1600) and her grade point average (from 0 to 4) for her first year in college. The data are shown below, with x denoting the score on the standardized test and y denoting the first year college grade point average, A scatter plot of the data is shown in Figure 1. Also given is the product of the standardized test score and the grade point average for each of the fifteen students. These products, written in the column labelled "xy, may aid in calculations.) Standardized Grade point test score, average, ty 1010 3.13 316113 1010 2.50 1100 2:36 1240 3.24 40176 52540 1400 3.00 2440 22016 1060 2.95 3127 790 2126 1785.4 2.09 2596 1510 3.48 4200 920 Doda 360 1297.4 1510 3.20 2.98 1300 1350 1200 3874 50355 23 Standardized test score For 2.77 21
What is the slope of the least-quares regression line for these dotaz Carry your intermediate computations to at least four decimal places and round your answer to at least four decimal places. (if necessary, consulta list of formulas) 0 5 ?
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