ANALYSIS OF VARIANCE Flashcards
A statistical method used to compare two or more populations of interval or ratio data.
It determines whether differences exist between population means.
ANOVA
It is used to compare the means of more than two groups when there is one independent variable and one dependent variable.
ONE WAY ANOVA
analyzes the variance of the data to determine whether we can infer that the population means differ.
ANOVA TECHNIQUE
Assumptions of One-Way ANOVA
The samples are randomly selected and independently assigned to groups.
Populations should have approximately equal standard deviation
Population distributions are normal
Procedure for Analysis of Variance
STEP 1: FORMULATE H0 AND H1
STEP 2: SET THE LEVEL OF SIGNIFICANCE
STEP 3: COMPLETE THE ANOVA TABLE
STEP 4: DECIDE WHETHER THE H0 IS ACCEPTED OR NOT
STEP 5: CONCLUDE FOR THE “STATEMENT” TO BE PROVEN