=+Task 7: In this chapter we used an example of the time taken for 21 heavy smokers

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=+Task 7: In this chapter we used an example of the time taken for 21 heavy smokers to fall off a treadmill at the fastest setting (18, 16, 18, 24, 23, 22, 22, 23, 26, 29, 32, 34, 34, 36, 36, 43, 42, 49, 46, 46, 57).

Calculate the sum of squares, variance and standard deviation of these data.

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