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sveticcg [70]
3 years ago
7

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

ration 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. 2.5 B. 5.6 C. 1.6 D. 6.3
Mathematics
2 answers:
vovikov84 [41]3 years ago
5 0

Answer:

The answer is D) 6.3

lesya692 [45]3 years ago
4 0
The variance (σ^2) is the square of the differences between the mean and each data.
 The problem says that the program reports a mean of 31.5 and a standard deviation of 2.5, so you have to elevate the standar deviation to the power 2:

 σ^2 = (2.5)^2 
 σ^2 = 6.30       
<span>
 What is the variance of the data?
</span> The variance of the data is 6.30, so the the correct option is D.







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3 0
3 years ago
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5 0
3 years ago
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