Specification

  • List B from Topic B (Cognitive), focusing on the chi-squared test.

Past Paper Questions

  • Angela used a chi-squared test to analyse the data from her study. Justify the use of a chi-squared test for this data. (2) June 2016
  • Give two reasons, other than the type of data, why Mateo used a chi-square statistical test. (2) October 2017
  • Calculate the chi-squared for the data gathered by Mackenzie in his observation by completing Table 2. You must give your answer to two decimal places. (2) June 2021
  • Mackenzie did not find a significant difference in his first observation. He decided to repeat the observation but used boys and girls aged seven years old. He calculated chi-squared for the second observation and found a calculated value of 3.68. Explain whether Mackenzie found a significant difference at p≤0.05, using a two-tailed (non-directional) test where df =1. The formulae and statistical tables can be found at the front of this paper. (2) June 2021
  • Calculate the chi-squared for the data gathered by Aljaz by completing Table 4. You should give your answer to two decimal places. The formula can be found in the formulae and statistical tables at the front of the exam paper. (4) June 2018