# Question: Why is it necessary to have more than one method

Why is it necessary to have more than one method for measuring central tendency?

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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? A 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 has a mean of M = 5 and a second sample has a mean of M = 10. The two samples are combined into a single set of scores. a. What is the mean for the combined set if both of the original samples have n = 5 ...The range is completely determined by the two extreme scores in a distribution. The standard deviation, on the other hand, uses every score. a. Compute the range (choose either definition) and the standard deviation for the ...Calculate SS, variance, and standard deviation for the following sample of n = 5 scores: 10, 4, 8, 5, 8. (Note: The definitional formula for SS works well with these scores.) Calculate SS, variance, and standard deviation ...Post your question