101k views
1 vote
Some students in a school were surveyed to determine how many hours they study per night and their grade-point averages. The results are shown in the table.

If the data are entered into a regression calculator, what is the approximate y-intercept of the resulting regression line?

–1.76
–0.63
0.63
1.76

Some students in a school were surveyed to determine how many hours they study per-example-1
Some students in a school were surveyed to determine how many hours they study per-example-1
Some students in a school were surveyed to determine how many hours they study per-example-2

2 Answers

0 votes
1.76 is the answer
:)
User Tijkijiki
by
7.6k points
0 votes
It appears either the teacher provided the calculator result or you did so yourself. Either way, the regression equation is approximately y = 0.628x + 1.759

The equation is in slope intercept form y = mx+b
m = slope = 0.628
b = y intercept = 1.759

The value 1.759 rounds to 1.76 which is the answer
User Matteo Basso
by
8.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories