Inferential analysis of data workshop activity

Question 1

The data are interval, the distribution is normal and each of the
10 subjects took part in both parts of the experiment.
Select ONE option from the list below, which indicates the most
appropriate hypothesis test.

A. Related Z test
B Wilcoxon Signed rank test
C Related t test
D Mann-Whitney U test
E Chi squared test.

Answer 1

C. Related t test (exam reference material)

Question 2

Part of the data from a study shows that 60 students who were
classified as good attendees were academically classified as
above average. 10 students classified as poor attendees were
academically classified as below average.
Select ONE option from the list below, which indicates the most
appropriate hypothesis test based on the information given
above.

A Related Z test
B Wilcoxon Signed rank test
C. Unrelated Z test
D. Mann-Whitney U test
E. Chi squared test.

Answer 2

E. Chi squared test. (exam reference material)

Question 3

A group of therapy radiographers are each given a clinical score
on a clinical assessment for a certain technique. A training
programme is given on the same technique and the clinical
assessment repeated after two weeks.
Select ONE option from the list below, which indicates the most appropriate hypothesis test for the information given above.

A. Related Z test
B Wilcoxon Signed rank test
C Related t test
D Mann-Whitney U test
E Chi squared test.

Answer 3

B. Wilcoxon Signed rank test (exam reference material)

Question 4

Select ONE option from the legend at the top of the page.
With reference to inferential statistics

1. The tests are undertaken to draw a conclusion about the sample.
2. Statistical significance implies that the null hypothesis has been rejected.
3. Statistically the alternative hypothesis reflects the research hypothesis.

A. 1, 2, and 3 correct
B. 1 and 2 correct
C. 2 and 3 correct
D. 1 only correct
E. 3 only correct.

Answer 4

2. Statistical significance implies that the null hypothesis has been rejected.
3. Statistically the alternative hypothesis reflects the research hypothesis.
   Answer C

Question 5

5) Select ONE option from the legend at the top of the page.
With reference to inferential statistics
1. An inferential test is done to prove a hypothesis.
2. The Mann-Whitney test cannot be done on ratio data.
3. An inferential test will indicate the degree of probability of random variability influencing the sample findings.

A. 1, 2, and 3 correct
B. 1 and 2 correct
C. 2 and 3 correct
D. 1 only correct
E. 3 only correct.

Answer 5

3. An inferential test will indicate the degree of probability of random variability influencing the sample findings.
   Answer E