Question

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Answer 1

Answers:

1. Class C has the least variability
2. Class B has the highest scores on average

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Explanation:

1. The variability can be measured using the range. It's to measure how spread out the data set is. The smaller the range, the less the variability. The smallest of which is found in class C.
2. The average can be measured by the arithmetic mean. We go for the largest mean, which in this case is class B.

Answer 2

Answer:

Class C has least variability and Class B has highest variability.

I think it will help you

Range= Large- Small Data