The data from Exercises 2 15 and 2 16 come from the same 10 (N) observers In other words, the same person had a score of 1 65 in the Eyes Level condition and 1 73 in the Eyes Elevated condition Therefore, the data form pairs of scores (a) Multiply the scores in each pair together to get a variable called XY (b) Calculate XY (c) Calculate XY (d) Do XY and XY differ, and would you normally expect them to (e) Calculate (You will come across these calculations again in Chapter 9 The result is called the covariance Very few of the calculations in this book will be any more complex than this one )

Question: The data from Exercises 2.15 and 2.16 come from the same 10 (N) observers. In other words, the same person had a score of 1.65

The data from Exercises 2.15 and 2.16 come from the same 10 (N) observers. In other words, the same person had a score of 1.65 in the Eyes Level condition and 1.73 in the Eyes Elevated condition. Therefore, the data form pairs of scores.
(a) Multiply the scores in each pair together to get a variable called XY.
(b) Calculate Î£XY.
(c) Calculate Î£XÎ£Y.
(d) Do Î£XY and Î£XÎ£Y differ, and would you normally expect them to?
(e) Calculate

(You will come across these calculations again in Chapter 9. The result is called the covariance.
Very few of the calculations in this book will be any more complex than this one.)

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