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2 Unit AS 2: Applied Mathematics

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Question 266

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]
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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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