| Data set X | 15 | 15 | 16 | 17 | 17 | 18 | 18 | 19 | 19 |
|---|---|---|---|---|---|---|---|---|---|
| Data set Y | 1 | 1 | 2 | 3 | 3 | 4 | 4 | 5 | 5 |
The table shows the values in data sets X and Y.
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Math·Problem-Solving and Data Analysis·One-variable data: Distributions and measures of center and spread
mediumThe values in data sets X and Y are shown in the table. Which of the following statements must be true?
I. The median of data set X is equal to the median of data set Y.
II. The standard deviation of data set X is equal to the standard deviation of data set Y.
A
I and II
B
I only
C
II only
D
Neither I nor II