Week 10 Summary......

Instructor

Jeremy Jackson

| May 2, 2016

Location:

NW 3431

| New Westminster

Albert Einstein: "*Great spirits have always encountered opposition from mediocre minds*"

What To Do When Sigma Unknown

t-distribution

t-test for a single sample mean

Relationship between the t-distribution and the standard normal distribution

The Two Sample Case

The basic reserach study: One IV with 2 levels, 1 DV

Sampling from 2 populations

The null in a basic research study

The P-value in a basic reserach study

t-test for Independent Sample Means

t-test example

Example in MS Excel

Assumptions

Effect Size vs Statistical Significance

What is the effect size

Measures of sample effect size: Cohen's d.

Relationship between effect size and statistical significance