Ms. Johnson uses a statistics program to analyze all the data collected by her students during a lab experiment about acceleration due to gravity. The program reports line segment x is equal to 31 point 5 and sigma is equal to 2 point 5 What is the variance of the data? Round to the nearest tenth.
The variance is the square of the standard deviation: σ² = 2.5² = 6.25. Rounded to the nearest tenth, that is 6.3, so the correct choice is 6.3.
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