Text: Copy and complete the table and formulas regarding Hours of Study (x) and Exam Scores (y), below, to answer questions 24 through 35.
(Round off to two decimal places after each operation.)
Correlation Table
x y (x-x) (y-y) (f-f)x-x (x -T2 y-y2
3 43 2 29 0 30
4 78 6 98 c= y=
2= 2= 7=
Correlation and Linear Regression formulas
x-xy-y VD(x-x D(y-y2
Correlation:
Linear regression:
b=ry
(y-y)2 (n-1)
a=y-bx
E (x-x)2 (n-1)
Sx=
xq+n=h