An educational psychologist investigated whether there is an association between age group (Teens, Young Adults, and Mid-life) and the preferred format of digital learning resources (Video Tutorials, Interactive Quizzes, Text Monographs, or Podcasts).
Table 1: Number of participants choosing each digital learning resource format
| Age Group | Video Tutorials | Interactive Quizzes | Text Monographs | Podcasts |
|---|---|---|---|---|
| Teens (13–19) | 42 | 58 | 12 | 28 |
| Young Adults (20–34) | 35 | 41 | 29 | 35 |
| Mid-life (35–50) | 22 | 26 | 45 | 17 |
Table 2: Extract of the table of critical values for the Chi-Square (chi2\\chi^2chi2) test
| Degrees of freedom (dfdfdf) | 0.10 | 0.05 | 0.01 |
|---|---|---|---|
| 3 | 6.251 | 7.815 | 11.345 |
| 4 | 7.779 | 9.488 | 13.277 |
| 5 | 9.236 | 11.070 | 15.086 |
| 6 | 10.645 | 12.592 | 16.812 |
| 7 | 12.017 | 14.067 | 18.475 |
| 8 | 13.362 | 15.507 | 20.090 |
Using the tables above, what is the critical value at the 1% significance level (p=0.01p = 0.01p=0.01) for the chi-square test calculated on this data?
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.