SAT One-variable data Question
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Question 1 · Medium · MathNovember 2024 Batch 2 · Q10One-variable data: distributions and measures of center and spread · 0 solved
| Data set | Values |
|---|---|
| X | 13, 13, 14, 14, 15, 16, 16, 17, 17 |
| Y | 2, 2, 3, 3, 4, 5, 5, 6, 6 |
The values in data sets X and Y are shown in the table. The standard deviation of data set X is , and the standard deviation of data set Y is . Which of the following statements about the standard deviation of the data sets is true?
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The trap here
SAT standard deviation: spread, not size — Adding a constant to every value changes the mean and leaves the standard deviation alone. SAT questions are built almost entirely on that distinction.