Answer to Module 1, Exercise 2b:

Add your calculated values for each column to check against the sum that is shown in the table. If you get a different answer, check your calculations for the first row to make sure that you used the right values. Then use the same procedure for each of the remaining rows. Here are answers for the second case.

   

  X

  Y

(Y - Y´)

(Y - Y´)2

3

3

3.30

-0.25

0.0625

-0.30

0.09

0.05

0.0025

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