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2 Unit AS 2: Applied Mathematics

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Question 79

For 20 observations, the mean is 9 and ∑x2=2050\sum x^2=2050∑x2=2050.

a.

Calculate the variance of the observations.

[2]
b.

Hence calculate the standard deviation.

[1]
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2 Unit AS 2: Applied Mathematics Questions

  1. A Level
  2. /Maths
  3. /2 Unit AS 2: Applied Mathematics

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