hard · SAT Math
A teacher recorded the number of hours x that each of several students spent studying for an exam and the resulting score y, in points, out of 100: Hours studied, x: 2 5 8 10 13 Test score, y (points): 61 70 79 88 93 The line of best fit is y = 2.6x + 57, where x is hours studied and y is the predicted test score, in points. For the student who studied 10 hours and scored 88 points, what is the residual (actual score minus predicted score), in points?
- -5
- 5
- 62
- 83
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