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2.5.11 Inference using a correlation coefficient (A-level only)

2.5.11 Inference using a correlation coefficient (A-level only)

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Question 16

Sarah wants to determine if there is a correlation between the number of hours students spend revising and their scores on a standardized mathematics test.

She calculates the product moment correlation coefficient for a random sample of 50 students and finds r=0.25r = 0.25r=0.25.

Carry out a suitable test to investigate Sarah's belief at a 5% level of significance.

State clearly

  • your hypotheses
  • your critical value
[3]
Markscheme

2.5.11 Inference using a correlation coefficient (A-level only) Questions

  1. A Level
  2. /Maths
  3. /2.5.11 Inference using a correlation coefficient (A-level only)

47 exam-style questions on OCR (MEI) A Level Maths 2.5.11 Inference using a correlation coefficient (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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