chapter 13 - 2 sample t - test

Question 1

when do we use the 2 sample t test?

Answer 1

to compare the means of a numeric variable sampled from 2 independent populations

Question 2

what is the aim of a 2 sample t test?

Answer 2

to evaluate whether or not this mean is different inthe 2 populations

Question 3

assumptions of 2 sample t test

Answer 3

1. independence
2. measurement scale - interval or ratio
3. normality

Question 4

another name for 2 sample t test

Answer 4

independent 2 sample t test