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Data handling and analysis

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Question 52

A researcher measured the morning salivary cortisol levels (in mcg/dL) of a participant at 8:00 AM over an eight-day period during a stress-management study.

Table 1: Morning cortisol levels over an eight-day period

Day	1	2	3	4	5	6	7	8
Cortisol Level (mcg/dL)	14.2	13.8	15.0	14.5	12.9	13.5	14.8	15.1

Explain one reason why the mean is the most appropriate measure of central tendency for this set of data.

[2]

Markscheme

Data handling and analysis Questions

A Level
Psychology
Data handling and analysis

235 exam-style questions on AQA A Level Psychology Data handling and analysis. Each one has a worked solution and a mark scheme showing where the marks go.

Data handling and analysis

Question bank

Data handling and analysis

Easy Medium

Question 52

A researcher measured the morning salivary cortisol levels (in mcg/dL) of a participant at 8:00 AM over an eight-day period during a stress-management study.

Table 1: Morning cortisol levels over an eight-day period

Day	1	2	3	4	5	6	7	8
Cortisol Level (mcg/dL)	14.2	13.8	15.0	14.5	12.9	13.5	14.8	15.1

Explain one reason why the mean is the most appropriate measure of central tendency for this set of data.

[2]

Markscheme

Data handling and analysis Questions

A Level
Psychology
Data handling and analysis

235 exam-style questions on AQA A Level Psychology Data handling and analysis. Each one has a worked solution and a mark scheme showing where the marks go.