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Benito carried out some research into the effects of anger management treatment with offenders - AQA - A-Level Psychology - Question 7 - 2017 - Paper 2
Question 7
Benito carried out some research into the effects of anger management treatment with offenders. He recorded the number of aggressive acts offenders displayed. The of... show full transcript
Worked Solution & Example Answer:Benito carried out some research into the effects of anger management treatment with offenders - AQA - A-Level Psychology - Question 7 - 2017 - Paper 2
Step 1
Step 2
State three reasons why Benito would use the statistical test you identified in (i).
Answer
- The t-test allows for a comparison of the means between two independent groups, which is essential for analyzing the data collected from offenders with and without treatment.
- It assesses whether the differences in means are statistically significant, thus helping to determine the effectiveness of anger management treatment.
- The t-test assumes that data is normally distributed; given this, it is a robust method to analyze the means of the two groups' aggressive acts.
Step 3
Describe how he would have selected his sample.
Answer
Benito would select his sample randomly to ensure that every offender has an equal chance of being included. This could involve assigning a number to each offender in the population and using a random number generator to select the desired sample size. Alternatively, he could use a random selection method such as drawing names from a hat or using a random sampling technique in his database.