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Data recording, analysis and presentation

Data recording, analysis and presentation

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Question 114

An educational psychologist compares two reading intervention programmes by measuring the reading comprehension scores of primary school pupils (out of 50) after six weeks:

  • Programme A: Mean=38.5\text{Mean} = 38.5Mean=38.5, Standard Deviation=2.1\text{Standard Deviation} = 2.1Standard Deviation=2.1
  • Programme B: Mean=32.4\text{Mean} = 32.4Mean=32.4, Standard Deviation=8.6\text{Standard Deviation} = 8.6Standard Deviation=8.6

Which of the following is the most accurate interpretation of these descriptive statistics?

A

Programme A resulted in a higher average reading score, and the pupils' performance was more consistent than those in Programme B.

B

Programme B resulted in a lower average reading score, but the pupils' performance was more consistent than those in Programme A.

C

Programme A's small standard deviation shows that the majority of pupils scored within 2.12.12.1 marks of the median of 38.538.538.5.

D

Programme B's large standard deviation indicates that its data distribution is highly skewed with no variation around the mean.

Markscheme

Data recording, analysis and presentation Questions

  1. A Level
  2. /Psychology
  3. /Data recording, analysis and presentation

513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.

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