Unformatted text preview: 10. Calculate ( Σ X)( Σ Y). Calculate Σ XY. X=3, 2, 1. Y=6, 1, 3. 11. Draw a bimodal graph that is not symmetric. 12. Is it possible to have a graph that is not symmetric yet has no skew? 13. Estimate the interquartile range for the following distribution. 14. Amy took a test in her physics class. She got a 33. The mean was 22 with a standard deviation of four. Brain took a test in his biology class and he got a 630. The mean was 490 with a standard deviation of 80. Relatively speaking, who did better? 15. True or False: It is appropriate to call any unimodal, symmetric, bellshaped distribution a normal curve. Please explain. 16. What must you do to the covariance in order to interpret it? 17. What does it mean if you calculate a value of 0 for Cramers V? 18. In order to find lambda, what do you use?...
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 Fall '10
 RajendraM.Patel
 Standard Deviation, cramers

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