A sample of n = 7 scores has a mean of M = 9. If one new person with a score of X = 1 is added to the sample, what is the value for the new mean?
Answer to relevant QuestionsA sample of n = 6 scores has a mean of M = 13. If one person with a score of X = 3 is removed from the sample, what is the value for the new mean? A sample of n = 7 scores has a mean of M = 5. After one new score is added to the sample, the new mean is found to be M = 6. What is the value of the new score? (Hint: Compare the values for ∑X before and after the score ...A researcher conducts a study comparing two different treatments with a sample of n = 16 participants in each treatment. The study produced the following data: a. Calculate the mean for each treatment. Based on the two ...A population has a mean of m = 30 and a standard deviation of s = 5. a. If = points were added to every score in the population, what would be the new values for the mean and standard deviation? b. If every score in the ...In an extensive study involving thousands of British children, Arden and Plomin (2006) found significantly higher variance in the intelligence scores for males than for females. Following are hypothetical data, similar to ...
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