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Michael took 10 tests in his math class. His lowest test score was 58. His highests test score was 81. On the 11th test, he earned a 95. Which statistical measure could possibly not change?A)medianB)meanC)rangeD)standard deviation

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Solution

A)median

True since the median is calculated with the middle values of the data and on this case those values not change

B)mean

False the new mean would be higher than the before value

C)range

False the new range would be 95 - 58 = 37

D)standard deviation​

False the standard deviation would increase since we have more variability

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