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Practice 1: #39
Which of the following best represents the standard deviation of the data set {3,4,5,6,7}
Solution:
Subtracting 5 from each of the data points we get the set {-2,-1,0,1,2}. Squaring each of these values, taking their sum, and dividing by 5 gives us the variance.
My question is the number "5" that is being subtracted and divided the mean or the total data values in the set?
Which of the following best represents the standard deviation of the data set {3,4,5,6,7}
Solution:
Subtracting 5 from each of the data points we get the set {-2,-1,0,1,2}. Squaring each of these values, taking their sum, and dividing by 5 gives us the variance.
My question is the number "5" that is being subtracted and divided the mean or the total data values in the set?