practice problems for exam 2

practice problems for exam 2 - For each sets of scores (X...

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Unformatted text preview: For each sets of scores (X and Y) below: Calculate mean Calculate deviation scores Calculate variance and standard deviation calculate variance Calculate covariance Calculate r Calculate the regression equation Data set 1 X Y 1 3 2 5 4 1 2 3 4 5 Data set 2 X Y 4 3 2 5 4 1 2 1 4 5 Data set 3 X Y 6 7 8 9 9 4 5 6 7 8 Data set 4 X Data set 5 Y 3 2 2 4 1 X Data set 6 Y 1 3 5 7 9 X Data set 7 2 3 4 5 6 Y 4 3 1 7 9 X 6 5 3 6 8 2 1 4 2 6 Y 1 3 5 7 9 8 7 6 5 4 Data set 8 X Data set 9 Y 4 3 2 7 9 X Data set 10 Y 1 4 2 3 1 X 5 4 6 5 5 Y 3 4 2 3 1 8 2 6 5 6 2 4 5 3 1 Calculate z scores each x in the following samples Sample A 4 3 5 2 4 3 4 8 7 5 Sample B 5 4 6 5 2 4 3 4 5 4 Which of the above 2 samples shows more variability? Jasmine obtained 85% in history, and 93% in math. The mean of her class in history was 52, and the mean of her math class was 71, with a standard deviation of 12 for each. In which class did she perform relatively better compared to her cohort? For each, please indicate the percentage of individuals in Jasmine's class that performed below Jasmine. ...
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This note was uploaded on 09/19/2011 for the course PSY 418J taught by Professor Monfils during the Spring '10 term at University of Texas at Austin.

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