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Benito carried out some research into the effects of an advertising campaign about healthy living - AQA - A-Level Psychology - Question 15 - 2017 - Paper 2
Question 15
Benito carried out some research into the effects of an advertising campaign about healthy living. He recorded the number of times people exercised each week. The pe... show full transcript
Worked Solution & Example Answer:Benito carried out some research into the effects of an advertising campaign about healthy living - AQA - A-Level Psychology - Question 15 - 2017 - Paper 2
Step 1
Step 2
State three reasons why Benito would use the statistical test you identified in (i).
Answer
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The research involves comparing the means of two independent groups, which is the purpose of the Independent Samples t-test.
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The data collected is continuous (number of exercise sessions), suitable for this statistical analysis.
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It allows for assessing whether the difference in mean exercise sessions between the two groups is statistically significant.
Step 3
Describe how he would have selected his sample.
Answer
Benito would select his sample randomly by using a random number generator to choose participants from a larger population. This could involve listing all potential participants and then selecting a certain number of them randomly to ensure that every individual has an equal chance of being included in the sample.