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Mr Robinson has asked geography students and mathematics students to take part in an experiment - AQA - A-Level Psychology - Question 5 - 2018 - Paper 1
Question 5
Mr Robinson has asked geography students and mathematics students to take part in an experiment. He asked both sets of students to learn a list of 20 words. The math... show full transcript
Worked Solution & Example Answer:Mr Robinson has asked geography students and mathematics students to take part in an experiment - AQA - A-Level Psychology - Question 5 - 2018 - Paper 1
Step 1
Calculate the mean number of words retrieved by the mathematics students:
Answer
To calculate the mean number of words retrieved by the mathematics students, add the number of words retrieved by each student and divide by the total number of students. The calculations are as follows:
Thus, the mean number of words correctly retrieved by mathematics students is 11.6.
Step 2
Step 3
Explain which statistical (inferential) test Mr Robinson would have used to analyse the data:
Answer
Mr Robinson would have used the Mann Whitney test to analyze the data. This test is appropriate as he is comparing two independent groups: one with an interference task and one without. The Mann Whitney test allows for the analysis of ordinal data or non-normally distributed interval data.
Step 4
Explain one strength of Mr Robinson using quantitative data in his experiment:
Answer
One strength of using quantitative data is that it allows for a numerical comparison of outcomes. This means Mr Robinson can objectively analyze the results and compare the performance of geography and mathematics students without personal bias, leading to more reliable and valid conclusions.