Table 1 displays the summary statistics for the shelf life, in days, of two different varieties of tomatoes, Variety X and Variety Y, kept under controlled conditions.
| Measures of central tendency | Variety X | Variety Y |
|---|---|---|
| Mean | 17 | 10 |
| Median | 14 | 13 |
| Mode | 11 | 15 |
Identify the type of skewness (distribution shape) that the data suggest for each of Variety X and Variety Y. In each case, justify your answer by reference to the measures of central tendency.
Practise AQA A Level Psychology Research methods with exam-style questions for A Level Psychology. 100 questions covering Experimental method, Observational techniques, Self-report techniques, Correlations, Content analysis (A-level only), Case studies (A-level only), Scientific processes, Data handling and analysis, and Inferential testing (A-level only), matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.