Mathematics, 26.04.2020 03:03 lilxjayyy

Verify the given sums Σx, Σy, Σx2, Σy2, Σx y, and the value of the sample correlation coefficient r. (For each answer, enter a number. Round your value for r to three decimal places.)
Σx =
95

Correct: Your answer is correct.
Σy =
609

Correct: Your answer is correct.
Σx2 =
2,375

Correct: Your answer is correct.
Σy2 =
81,559

Correct: Your answer is correct.
Σx y =
13,777

Correct: Your answer is correct.
r =
0.997

Correct: Your answer is correct.
(c)
Find x bar, and y bar. Then find the equation of the least-squares line y hat = a + b x. (For each answer, enter a number. Round your answers for x bar and y bar to two decimal places. Round your answers for a and b to three decimal places.)
x bar = x bar =
y bar = y bar =
y hat = value of a coefficient
+ value of b coefficient
x

Answers: 2

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Verify the given sums Σx, Σy, Σx2, Σy2, Σx y, and the value of the sample correlation coefficient r....

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