Using the Research Randomizer on Moodle, or Otherwise, Choose a Random Sample of 36 Employees from Appendix A: Quantitative Analysis for Business Assignment, GCD
| University | Griffith College Dublin (GCD) |
| Subject | Quantitative Analysis for Business |
Assignment Details
(Appendix A is included at the end of questions and contains data on all 50 employees in Co. XYZ)
Question 1
- What proportion of staff is female?
- What proportion of staff is male?
- What is the average level of job satisfaction?
Question 2
- Using the Research randomizer on Moodle, or otherwise, choose a random sample of 36 employees from Appendix A
- How many samples of size 36 is it possible to get from a population of size 50?
- Grouping the sample data into class intervals, construct a frequency distribution
- Present the frequency distribution as a histogram
- From the frequency distribution estimate:
- The sample average
- The sample standard deviation
- The sample median value
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Question 3
- Using your answers to Q2 v) a) and b) above calculate a 95% confidence interval for the true population average income
- Calculate the true population average income from Appendix A and compare it to your confidence interval.
APPENDIX A
Nominal Ratio Ordinal
| Employee No. | Gender
(Male =1, Female = 2) |
Annual Salary(€) | Job Satisfaction
(5:v.satisfied,4:satisfied, 3:neither, 2:dissatisfied, 1:v.dissatisfied) |
| 1 | 1 | 45000 | 5 |
| 2 | 1 | 32000 | 3 |
| 3 | 1 | 39000 | 5 |
| 4 | 2 | 53000 | 1 |
| 5 | 1 | 46000 | 1 |
| 6 | 2 | 40000 | 4 |
| 7 | 1 | 55000 | 1 |
| 8 | 2 | 35000 | 5 |
| 9 | 1 | 55000 | 2 |
| 10 | 1 | 42000 | 4 |
| 11 | 1 | 37000 | 4 |
| 12 | 2 | 39000 | 5 |
| 13 | 1 | 46000 | 5 |
| 14 | 1 | 54000 | 4 |
| 15 | 1 | 31000 | 1 |
| 16 | 2 | 42000 | 2 |
| 17 | 1 | 37000 | 3 |
| 18 | 2 | 50000 | 5 |
| 19 | 1 | 51000 | 4 |
| 20 | 2 | 33000 | 2 |
| 21 | 1 | 33000 | 3 |
| 22 | 2 | 47000 | 1 |
| 23 | 1 | 43000 | 5 |
| 24 | 1 | 46000 | 2 |
| 25 | 1 | 58000 | 1 |
| 26 | 2 | 38000 | 4 |
| 27 | 1 | 53000 | 2 |
| 28 | 2 | 37000 | 1 |
| 29 | 1 | 43000 | 3 |
| 30 | 2 | 42000 | 3 |
| 31 | 1 | 36000 | 3 |
| 32 | 1 | 41000 | 4 |
| 33 | 1 | 50000 | 2 |
| 34 | 2 | 43000 | 1 |
| 35 | 1 | 47000 | 1 |
| 36 | 2 | 59000 | 2 |
| 37 | 1 | 31000 | 2 |
| 38 | 2 | 32000 | 1 |
| 39 | 1 | 58000 | 4 |
| 40 | 2 | 45000 | 4 |
| 41 | 1 | 40000 | 2 |
| 42 | 2 | 46000 | 1 |
| 43 | 1 | 48000 | 3 |
| 44 | 2 | 48000 | 1 |
| 45 | 1 | 56000 | 2 |
| 46 | 2 | 47000 | 2 |
| 47 | 2 | 30000 | 4 |
| 48 | 1 | 34000 | 4 |
| 49 | 1 | 50000 | 2 |
| 50 | 1 | 34000 | 1 |
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