Tests of Differences T-Tests; Analysis of Variance

Question 1

T-test

Answer 1

SHT that uses a test statistic with a known probability distribution of the t-distribution

Question 2

Independent t-test

Student’s t-test

Answer 2

SHT that tests whether 2 means collected from 2 independent samples differ significantly

Question 3

Paired t-test

Answer 3

SHT that tests whether 2 means collected from same sample differ significantly

Question 4

Student’s t-test:

for 2 independent groups to compare means

Answer 4

null hypothesis: the mean value of group 1 is the same as that of group 2

null hypothesis is rejected if p-value < 0.05

Question 5

Paired t-test:

for 2 paired groups to compare means

Answer 5

null hypothesis: the mean value in pre session is the same as that in post session

null hypothesis is rejected if p-value < 0.05