The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they slept the night before the exam. Calculate the equation of the least squares line. Hint: x=7 and y=70. Round the estimates and slope and y-intercept to 2 decimal places. n=10 Σx=70 Ey = 700 Ex²=504.4 Ey2=53410 Exy=5126.8 y = 15.75x+40.25 = 15.75x-40.25 y = -40.25x+15.75 y = 40.25x-15.75

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.7: More On Inequalities
Problem 44E
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The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they slept the night before the exam. Calculate the equation of the
least squares line. Hint: x=7 and y=70. Round the estimates and slope and y-intercept to 2 decimal places.
Σχ2=504.4 Σy2=53410 Σxy=5126.8
n = 10 Ex=70 Zy = 700
2 0 0 0
y = 15.75x+40.25
A
y = 15.75x-40.25
y
= -40.25x+15.75
y = 40.25x-15.75
Transcribed Image Text:The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they slept the night before the exam. Calculate the equation of the least squares line. Hint: x=7 and y=70. Round the estimates and slope and y-intercept to 2 decimal places. Σχ2=504.4 Σy2=53410 Σxy=5126.8 n = 10 Ex=70 Zy = 700 2 0 0 0 y = 15.75x+40.25 A y = 15.75x-40.25 y = -40.25x+15.75 y = 40.25x-15.75
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