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Stem leaf plot - answer to question 1

Stem leaf plot - answer to question 1-example-1

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mean is the average of the records, i.e. add all up and divide by the number of them.

mean = (40 + 54 + 56 + 59 + 63 + 63 + 65 + 73 + 75 + 77 + 77 + 85 + 89 + 89 + 89 + 91) / 16 = 71.5625 =~ 71.6




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