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2 Unit AS 2: Applied Mathematics

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Question 162

A sample of 16 observations has Sxx=120S_{xx}=120Sxx​=120.

a.

Calculate the descriptive variance of the observations.

[1]
b.

Calculate the unbiased estimate of the population variance.

[1]
c.

Explain the difference between the divisors used.

[1]
Markscheme

2 Unit AS 2: Applied Mathematics Questions

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

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