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2.5.3 Data presentation and interpretation

2.5.3 Data presentation and interpretation

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Question 4

A variable x x\,x has variance 6.25. A new variable is y=4x+7y=4x+7y=4x+7.

a.

Find the variance of yyy.

[2]
b.

Find the standard deviation of yyy.

[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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