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 [tex]\mu=31.5[/tex] and a standard deviation [tex]\sigma=2.5[/tex]
We know that the variance is the square of the standard deviation.
So , the variance of the data will be :-
[tex]\text{Variance}=\sigma^2=(2.5)^2=6.25\approx6.3[/tex]
Hence, the variance of the data =6.3
