A cognitive psychologist investigated whether the presence of ambient background noise affects subjective concentration levels during a reading comprehension task. A sample of 14 participants was randomly split into two separate groups: Group 1 performed the task in a quiet room, while Group 2 performed the task in a room with simulated traffic noise. After the task, each participant rated their subjective level of concentration on a scale from 1 to 20 (where a higher rating indicates better concentration).

The results of the study are shown in Table 1 below.

Table 1: Subjective concentration ratings (max 20) in quiet and noisy environments

Group 1 (Quiet Room)	Group 2 (Noisy Room)
17	11
15	13
19	8
14	12
18	9
12	14
16	10

What is the appropriate inferential statistical test to use to analyse the data from this study?

The results of the study are shown in Table 1 below.

Table 1: Subjective concentration ratings (max 20) in quiet and noisy environments

Group 1 (Quiet Room)	Group 2 (Noisy Room)
17	11
15	13
19	8
14	12
18	9
12	14
16	10

What is the appropriate inferential statistical test to use to analyse the data from this study?

Research methods and techniques

Question 70

Table 1: Subjective concentration ratings (max 20) in quiet and noisy environments

Markscheme

Research methods and techniques

Question 70

Table 1: Subjective concentration ratings (max 20) in quiet and noisy environments

Markscheme

Research methods and techniques

Question 70

Table 1: Subjective concentration ratings (max 20) in quiet and noisy environments

Research methods and techniques Questions

Research methods and techniques

Question 70

Table 1: Subjective concentration ratings (max 20) in quiet and noisy environments

Research methods and techniques Questions