Independent samples t-test One sample t-test Paired samples t-test ANOVA Kruskal
ID: 3272066 • Letter: I
Question
Independent samples t-test
One sample t-test
Paired samples t-test
ANOVA Kruskal Wallis Test
Signed Rank Test
Rank Sum Test
Chi-Square Test
Fisher Exact Test
Linear regression
Shapiro-Wilke Test
9. You want to see if there is a difference in memory test scores between normal controls, patients with mild cognitive impairment, and patients with dementia. Test scores are measured on a continuous scale. The sample size is 44 controls, 37 MCI, 36 AD. What test would you use?
10. Blood pressure measurements are collected on 5 students before and after a test. How would you test is there is a significant difference in blood pressure between the two time points?
11. Two experimental treatments have been developed for patients with chronic migraines. Patients are given either treatment 1 or treatment 2, and then they are observed. Each patient is considered either “cured” (no migraines for 3 months after treatment) or “not cured”. A total of 16 patients were sampled. Which test would you use to determine if one of the treatments is more effective?
Explanation / Answer
9. You want to see if there is a difference in memory test scores between normal controls, patients with mild cognitive impairment, and patients with dementia. Test scores are measured on a continuous scale. The sample size is 44 controls, 37 MCI, 36 AD. What test would you use?
ans :we have a continous scale and 1 categorical variable with 3 groups , so we would use a anova analysis that tries to compare the mean values of a continous variables over different groups
10. Blood pressure measurements are collected on 5 students before and after a test. How would you test is there is a significant difference in blood pressure between the two time points?
Ans: As this is a before and after scenrio , we would choose a paired samples t test.,Please note that in such tests the samples do not change and remain the same for the before and after treatments
11. Two experimental treatments have been developed for patients with chronic migraines. Patients are given either treatment 1 or treatment 2, and then they are observed. Each patient is considered either “cured” (no migraines for 3 months after treatment) or “not cured”. A total of 16 patients were sampled. Which test would you use to determine if one of the treatments is more effective?
Here we would use a chi square test , as the information given would result in a 2 way contingency table . we would get a count for each combination such as treatment1- cured ,, treatment1 - not cured and likewise.