Research Design and Analysis: Quantitative Methods Coursework
Includes answers to the following questions for which I received 86%:
The following data represent the average number of hours per month that a sample of 24 mobile phone company telesales workers reported that they spent worrying about losing their job:
9, 7, 10, 3, 5, 9, 6, 9, 7, 10, 6, 4, 8, 9, 5, 7, 10, 8, 6, 8, 9, 9, 7, 8.
i) Under what circumstances would you expect the mean, median and mode of a set of data to be numerically equal? (5 marks)
ii) Find the mean, the median and the mode of the above data. (6 marks)
iii) Calculate the standard deviation of the sample. (4 marks)
(mark out of 15: )
The average number of hours members of the adult population sleep per night is 8 and the standard deviation is 1.1.
i) What proportion of adults sleep more than 9 hours per night?
ii) What proportion of adults sleep less than 4 hours per night? (5 marks)
(mark out of 10: )
Question 3 (Open SPSS file Question 3 – Job satisfaction)
The managing director (MD) of a large recruitment company was persuaded by an occupational psychologist to try out a scheme of weekly meetings between managers and junior staff in local offices in an attempt to boost job satisfaction among the juniors. Job satisfaction was assessed by means of a standardized questionnaire.
The MD selected a local office with 12 junior members of staff to pilot the new scheme. These 12 employees were asked to complete the JSQ before the weekly talks began and again three months into the new scheme.
1. State the following:
a. DV (2 marks)
b. IV (2 marks)
c. Conditions/levels of the IV (4 marks)
d. Design of the study and why (5 marks)
2. a. Write an experimental hypothesis, 1 tail (2 marks)
b. State the null hypothesis (2 marks).
3. What do the descriptive statistics suggest about the job satisfaction before the weekly meetings began and then 3 months after? (12 marks)
4. What test is needed here and why? (4 marks)
5. Report the results of the tests in APA format (12 marks)
6. How could the design of this study be improved? (5 marks)
(mark out of 50: )
Question 4 (Open SPSS Question 4 - weight)
A dietician wanted to investigate whether there was any difference between the weight of females in France and the weight of females in Italy. She weighed 200 females from France and 200 females from Italy
1. State the following:
a. DV (2):
b. IV (2):
c. Conditions of the IV (4):
d. Design (2):
2. Carry out the relevant tests for parametric assumptions. Report the K-S and Levene statistics-if relevant- as well as the result of the test for each country, stating whether the data meets the parametric assumptions.
a. KS (denoted as D) Italy (4):
b. KS (denoted as D) France (4):
c. Levene (denoted as F) if relevant(4):
d. What do the descriptive statistics suggest about the effects of where you live on your weight? Report in APA format, stating the relevant descriptive statistics. (12)
3. What test is needed to compare the groups? Carry out the test and report in APA format(12)
(Mark out of 46:____)
Question 5 (Open SPSS Question 5 – enjoyment of reading)
An educational psychologist wanted to know whether girls and boys differed significantly in their enjoyment of reading. He asked for volunteers from among ten-year-old children in an inner London school to participate in his study by rating their enjoyment of the book that they were currently reading. Test the data to see whether there was a significant difference in the ratings of levels of enjoyment on the unstandardized 10-point scale (from 1 = minimal to 10 = extreme) by girls and boys.
1 a. What test is needed to compare the groups, giving full justification? (12 marks)
b. Carry out the test and report in APA format (12 marks)
(Mark out of 24:____)
TOTAL MARKS OUT OF 156:_____________