SAT One-variable data Question
The dot plot shows the distribution of capacity for a set of capacitors, set A, which a researcher used for a certain experiment. For another experiment, the researcher used a different set of capacitors, set B. Set B has the same number of capacitors as set A but the capacity of each capacitor of set B is 14 microfarads ( F) greater than the capacity of each respective capacitor in set A. Which of the following is true about the capacities of the capacitors in set B?
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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.