Question 1 Report
Table 1 shows the number of correct symbols copied in two minutes by four participants. A researcher is investigating whether background music changes concentration.
| Participant | Silent condition | Music condition |
|---|---|---|
| A | 31 | 35 |
| B | 28 | 30 |
| C | 33 | 29 |
| D | 30 | 34 |
(a) Use Table 1 to calculate the mean score in the music condition. Show your working. [2]
(b) Which participant’s data do not show the general pattern in Table 1? [1]
(c) Explain why the researcher should counterbalance the order of the two conditions. [1]
(a) 35 + 30 + 29 + 34 = 128 [1]; 128 / 4 = 32 correct symbols [1] (b) Participant C [1] (c) To reduce order effects such as practice / fatigue affecting concentration scores [1]
Everything you need to excel in your exams