ANOVA TEST

Question 1

Kva står ANOVA for?

Answer 1

Analysis Of Variance

Question 2

What variables does ANOVA involves?

Answer 2

One-way ANOVA involves:
One independent variable (referred to as a factor) which has a number of different levels
These levels correspond to the different groups or conditions
One continious dependent variable

Question 3

What can be an example of independent and dependent variables in the one-way ANOVA-test?

Answer 3

Comparing the effectiveness of three different teaching styles on student math scores. Than you will have one factor (independent variable) - teaching style, with three different levels (e.g. whole class, small group activities, self-paced computer activities)
The dependent variable is a continious variable (in this case, scores on a math test)

Question 4

Why is it called ANOVA?

Answer 4

Because it compares the variance (variability in scores) between different groups with the variability within each groups

Question 5

What is F Ratio?

Answer 5

Represents the variance between the group divided by the variance within the groups

Question 6

What does a large F Ratio indicate?

Answer 6

A large F Ratio indicates that there is more variability between the groups than there is within each group

Question 7

What two different ONE-WAY ANOVA do we have?

Answer 7

Between groups ANOVA

Repeated measures ANOVA

Question 8

What does a significant F test indicate?

Answer 8

Indicates that we can reject the nullhypothesis, which states that the population mean are equal

Question 9

When should we use “One-way ANOVA between groups”?

Answer 9

Used when you have one dependent variable (grouping) with three or more levels (groups) and one continous variable

Question 10

What do we need when using one-way between groups ANOVA?

Answer 10

1. One categorical independent variable with three or more distinct categories. This can also be a continous variable that has been recoded to give three equal groups (e.g. age groups: participant divided into three age categories, 29 and younger, between 30 and 44, 45 or above)
2. One continous dependent variable
   (e. g. optimism scores)

Question 11

What does the One-way ANOVA.-between-groups test?

Answer 11

Tell you whether there are sigificant differences in the meanscores on the dependent variable across the three groups.
Post-hoc-test can than be used to fin out where these differences lie

Question 12

Do you have a non-parametric alternative?

Answer 12

Kruskal-Wallis Test

Question 13

Kva meiner ein med ein Kontinuerlig variabel?

Answer 13

Dataene skal føreligge som interval eller forholdstal

Question 14

What is an example of a research question for one-way between groups ANOVA?

Answer 14

Is there a difference in optimism scores for young, middle-aged and old participants?

Question 15

What is an example of a research question for one-way repeated measures ANOVA?

Answer 15

Is there a change in confidence scores over the three time periodes?

Question 16

What does the one-way repeated measures ANOVA tests?

Answer 16

This techniques will tell you if there is a significant difference somewhere among the three sets of scores (e.g. time 1, time 2, time 3)