Description

INSTRUCTIONS TO CANDIDATES 

Please read carefully before you begin your examination.

This is an open book exam.

There are TEN questions on this exam paper

Answer TEN questions. You may use a calculator

You may type your answers below each question OR type your answers in a separate document. When you have finished, save the document, and submit via the relevant Turnitin portal.

This examination is marked out of 100 marks. All questions carry equal weight. This examination is worth 50% of the total marks for this module

PLEASE NOTE: Please check your work to ensure you have answered the correct number of questions and they are clearly numbered. 

This is an ‘open book’ exam, which means that you may use your notes to help you answer the questions. All answers should be written in your own words; do not copy and paste from other sources such as workshop slides or websites.  Any evidence of copied work will be investigated as possible Academic Misconduct. 

Do not communicate with or copy work from any other student during this exam. Any evidence of this will be investigated as possible Academic Misconduct. 

You must abide by the University’s regulations on academic misconduct. Formal enquiry proceedings will be instigated if there is any suspicion of misconduct in your work

Question 1  

A researcher conducted a one-factor independent groups experiment that had three levels. To analyse the data, she ran a one-way independent groups ANOVA using SPSS.  This revealed that the F ratio was 6.25.   Briefly explain what this F ratio tells us about the data and what information the researcher should look at next. [10]

Question 2

A researcher carried out an analysis in SPSS, producing the following output. Describe the study design, identify the analysis conducted and summarise the main findings, including any post-hoc analyses. [10]

Question 3  

A researcher wants to investigate whether caffeine affects alertness. She expects that the more milligrams (mg) of caffeine a person consumes, the more alert they will become. She can access 600 students who have volunteered to take part in her research and has ethical approval to give each participant up to a maximum of 250mg of caffeine. Specify an appropriate experimental design for testing her hypothesis and identify how you would analyse the resulting data.

Please note that there may be more than one correct answer to this question. You should outline the one method you believe to be most suitable.  [10]

Question 5       

A researcher carried out an analysis, producing the following output. Describe the study design, identify the analysis conducted and summarise the main findings. In addition, you should indicate whether any post-hoc analysis is required. [10]

Question 6   

A psychologist has been commissioned by government to test the effectiveness of a short video designed to teach young people how to spot Fake News on social media sites. To find out if the video is effective, he first asked 100 participants to complete a Fake News Identification Task that measured how accurate they were at identifying Fake News. Participants were then shown the short video before completing the Fake News Identification Task for a second time.  Based on previous research the psychologist predicted that the effect of the video would differ between males and females, so Gender was treated as an independent groups factor.

Describe the study design and identify an appropriate method of analyzing the data including any post hoc tests that may be required.    [10]

Question 7 

Briefly define statistical power and explain how it is affected by effect size, sample size and the chosen alpha level.  [10]