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2 Statistics

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Question 483

The coded values y=(x−50)/5y=(x-50)/5y=(x−50)/5 have mean 3.2 and sample variance 1.44.

a.

Find the mean of xxx.

[2]
b.

Find the sample standard deviation of xxx.

[2]
Markscheme

2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

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