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2 Statistics

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Question 463

The probability-style frequency table summarises 15 observations.

xxx0123
Frequency4kkk62

The mean is 1.4.

a.

Find kkk.

[3]
b.

Calculate the standard deviation.

[2]
Markscheme

2 Statistics Questions

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

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