A population of N = 15 scores has a mean of m = 8. One score in the population is changed from X = 20 to X = 5. What is the value for the new population mean?
Answer to relevant QuestionsA sample of n = 7 scores has a mean of M = 16. One score in the sample is changed from X = 6 to X = 20. What is the value for the new sample mean? One sample of n = 12 scores has a mean of M = 7 and a second sample of n = 8 scores has a mean of M = 12. If the two samples are combined, what is the mean for the combined sample? In words, explain what is measured by each of the following: a. SS b. Variance c. Standard deviation For the data in the following sample: a. Find the mean and the standard deviation. b. Now change the score of X = 8 to X = 18, and find the new mean and standard deviation. c. Describe how one extreme score influences the ...A population has a mean of m = 80 and a standard deviation of s = 20. a. Would a score of X = 70 be considered an extreme value (out in the tail) in this sample? b. If the standard deviation were s = 5, would a score of X = ...
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