From raw data values

Calculate unbiased estimates when given individual data values (not summary statistics), requiring calculation of Σx and Σx² first.

1 questions · Moderate -0.5

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CAIE S2 2020 June Q1

6 marks Moderate -0.5

1 The lengths, \(X\) centimetres, of a random sample of 7 leaves from a certain variety of tree are as follows.
3.9
4.8
4.8
4.4