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2.5.3 Data presentation and interpretation

2.5.3 Data presentation and interpretation

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Question 2

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

2.5.3 Data presentation and interpretation Questions

  1. A Level
  2. /Maths
  3. /2.5.3 Data presentation and interpretation

8 exam-style questions on CCEA A Level Maths 2.5.3 Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.

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