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How to compute for the 1.  ∑x2   2.  ∑ y2 3. ∑xy of this data set for linear regression using Excel?

How to compute for the 1.  ∑x2   2.  ∑ y2 3. ∑xy of this data set for linear regression using Excel?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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How to compute for the

1.  ∑x2  

2.  ∑ y2

3. ∑xy

of this data set for linear regression using Excel?

grade-point average y decile rank x 1.93 3 2.55 2 1.72 1 2.48 1 2.87 1 1.87 3 1.34 4 3.03 1 2.54 2.34 2 1.4 8 1.45 4 1.72 8 3.8 1 2.13 1.81 2.33 1 2.53 1 2.04 2 3.2 2 Mean 2.254 2.9 Sum 45.08 58 Sum of squares of x 2. 5.
Transcribed Image Text:grade-point average y decile rank x 1.93 3 2.55 2 1.72 1 2.48 1 2.87 1 1.87 3 1.34 4 3.03 1 2.54 2.34 2 1.4 8 1.45 4 1.72 8 3.8 1 2.13 1.81 2.33 1 2.53 1 2.04 2 3.2 2 Mean 2.254 2.9 Sum 45.08 58 Sum of squares of x 2. 5.
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