Maths-
SAT
Easy
Question
Data set R and data set S are represented in the dot plots shown. The mean for each data set is 50.0. Which of the following best describes the relationship between the standard deviation of data set R and the standard deviation of data set S?
- Both data sets have the same standard deviation.
- The standard deviation of data set R is greater than the standard deviation of data set S.
- The standard deviation of data set R is less than the standard deviation of data set S.
- The sum of the standard deviations of the two data sets is 100.
The correct answer is: The standard deviation of data set R is less than the standard deviation of data set S.
The mean of data set R and S is 50.
The standard deviation of data set R is less than the standard deviation of data set S. because the data in data set S is widely spread compared to the data in data set R.
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