Statsitical Tests (1 Or 2 Groups)

Question 1

One-Sample t Test

Answer 1

Determine whether the mean of a single sample is different from an expected value

Question 2

One-Sample t Test example

Answer 2

Is the mean weight of rat greater then the average weight of 200g

Question 3

Paired t Test

Answer 3

Whether the means of two sets of paired measurements are different from each other

Question 4

Paired t Test example

Answer 4

Measuring a single group of people before and after drug treatment

Question 5

Two-Sample t Test

Answer 5

Whether the means of a two sets of unpaired measurements are different from each other

Question 6

Two-Sample t Test example

Answer 6

Whether the means of a two sets of unpaired measurements are different from each other

Question 7

Wilcoxon matched pairs test

Answer 7

Whether the medians of two paired measurements made on an identifiable population are different from each other (non parametric)

Question 8

Wilcoxon matched pairs test example

Answer 8

A single group of people measured twice before and after drug treatment

(non-parametric equivalent of paired t-test)

Question 9

Mann-Whitney U test example

Answer 9

Whether experimentally treated organisms are different from control

(non-parametric equivalent of the two-sample t test)

Question 10

Mann-Whitney U test

Answer 10

Whether the medians of two unpaired sets of measurements are different from each other (non-parametric)