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rusak2 [61]
4 years ago
5

Ms. Johnson uses a statistics program to analyze all the data collected by her students during a lab experiment about accelerati

on due to gravity. The program reports a mean of 31.5 and a standard deviation of 2.5. What is the variance of the data? Round to the nearest tenth. a. 2.5b. 5.6c. 1.6d. 6.3
Mathematics
1 answer:
umka21 [38]4 years ago
7 0

Answer: d. 6.3

Step-by-step explanation:

Given : 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 a mean \mu=31.5 and a standard deviation \sigma=2.5

We know that the variance is the square of the standard deviation.

So , the variance of the data will be :-

\text{Variance}=\sigma^2=(2.5)^2=6.25\approx6.3

Hence, the variance of the data =6.3

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