Home / Questions / A sample of n=20 scores has a mean of M=30. a. If the sample standard deviation is s=10,
A sample of n=20 scores has a mean of M=30. a. If the sample standard deviation is s=10, would a score of X=38 be considered an extreme value(out in the tail of the distribution)? b. If the sample standard deviation is s=2, would a score of X=38 be considered an extreme value(out in the tail of the distribution)? Problem 2 A normal-shaped population has mean of u=80 and a standard deviation of o=20. a. If 10 points were added to every score in the population, what would be the new values for the population mean and standard deviation? b. If every score in the original population was multiplied by 2, what would be the new values for the population mean and standard deviation? Problem 3 For the following scores: 1, 0, 4, 1, 1, 5 a. Calculate the mean. b. find the deviation for each score, and check that the deviations sum to zero Problem 4 Calculate SS, variance, and standard deviation for the following sample of n=6 scores: 11, 0, 8, 2, 4, 5 Using the definitional formula for SS Problem 5 Calculate SS variance, and standard deviation for the following sample of n=9 scores: 3, 1, 1, 1 Using the computational formula Student terms:
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