A-LevelPsychologyResearch methods9990/22 · May/June 2021 · Q53 Marks
The mean and the mode are measures of central tendency.
- (a)Explain why the mean could be a better measure of central tendency than the mode.[2]
- (b)Explain why a researcher may have to use the mode instead of the mean.[1]
Mark scheme
Marking points from the official mark scheme (May/June 2021). The mark or mark type is shown in brackets.
- [2] The mean uses values whereas the mode only looks at frequency;
- [2] The mean represents all the data, the mode doesn't / the mean is more representative;
- [2] The mean uses (the values of) all the scores so considers extreme scores (outliers) but mode does not consider these;
- [1] When data is nominal / is in categories / is only totals / comes from yes or no (closed) questions / not on a continuous scale;
- [1] To reduce the influence of outliers;
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