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2 Unit AS 2: Applied Mathematics

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Question 145

Ten recorded values have mean 4 and ∑x2=190\sum x^2=190∑x2=190.

a.

Calculate the descriptive variance of these ten values, using divisor nnn.

[2]
b.

Calculate the unbiased estimate of the population variance, using divisor n−1n-1n−1.

[2]
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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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