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2 Statistics

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Question 282

Six observations have mean 10. Five of the observations are 4,7,9,12,134,7,9,12,134,7,9,12,13.

a.

Find the sixth observation.

[2]
b.

Calculate the sample standard deviation of all six observations.

[2]
Markscheme

2 Statistics Questions

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

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