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2.2.7 Calculations of mean and standard deviation

What does the mean indicate about a dataset?

A

It can change the mean considerably.

B

fx2fx^2fx2, not (fx)2(fx)^2(fx)2.

C

Its centre.

D

Early rounding can make the final standard deviation inaccurate.

2.2.7 Calculations of mean and standard deviation Flashcards

  1. A Level
  2. /Maths
  3. /2.2.7 Calculations of mean and standard deviation

Flashcards for OCR A Level Maths 2.2.7 Calculations of mean and standard deviation, covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 28 cards, matched to the OCR A Level Maths (H240) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.