A computer is programmed to predict test scores, compare them with actual scores, and find the r.m.s.

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A computer is programmed to predict test scores, compare them with actual scores, and find the r.m.s. size of the prediction errors. Glancing at the printout, you see the r.m.s. size of the prediction errors is 3.6, and the following results for the first ten students:

predicted score: 90 90 87 80 42 70 67 60 83 94 actual score: 88 70 81 85 63 77 66 49 71 69 Does the printout seem reasonable, or is something wrong with the computer? p-968

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Statistics

ISBN: 9780393522105

4th Edition

Authors: David Freedman, Robert Pisani, Roger Purves

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