Flashcards in Chapter 10 Glossary Deck (37)

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1

## What is an anova summary table?

### Table that organises the results of anova. For each source of variation, the degrees of freedom, sums of squares , mean squares, f-ratios and p-values are listed.

2

## What is between-groups variance?

### Index of variability among group means.

3

## What is correlated-groups design?

### Research design in which participants in one group are related to participants in the other groups, thus controlling individual differences and increasing power.

4

## What is critical thinking?

### Applyling the principles of inference discussed in this text to everyday situations.

5

## What is error bar?

### An addition made to either histograms or frequency polygons that indicates the size of the standard error of the mean.

6

## What is error team?

### A measure of the variability of scores within each group that provides a basis for comparing observed differences between groups.

7

## What is ex post facto study?

### Non experimental design in which the current situation is observed and related to reports of previous events.

8

## What is experimental design?

### Participants are randomly assigned to groups and all appropriate control procedures are used.

9

## What is experimental variance?

### Variability among the group means in a research study that is due to effects of the independent variable.

10

## What is an extraneous variable?

### Variabiliity due to the effects of the extravenous variable

11

## What is the f-test?

### An f-ratio is an inferential statistic that is the ratio of two variance estimates.

12

## What is independent-groups design?

### Researcu design in which the participants appear in only one group.

13

## What is interaction effects?

### Combined effect of two or more independent variables, such that the effect of one independent variable differs depending on the level of the other independent variable.

14

## What is interaction effects?

### Combined effect of two or more independent variables, such that the effect of one independent variable differs depending on the level of other independent variable.

15

## What is manipulation check?

### Procedure designed to verify that the independent variable actually varied in the different conditions.

16

## What is the mean square?

### A variance estimate used in ANOVAs.

17

## What is multilevel, completly randomised, netween subjects design?

### A design with more than two groups, in which each participant is randomly assigned to one group.

18

## What is multivariable designs?

### Designs employing more than one independent variable and thus allowing researchers to identify interactive effects independent variables.

19

## What are nonsystematic withion-groups variance?

### Variance due to random factors that affect some participants more than others.

20

## What is partitioned?

### Seperating the total sum of squars into between-groups and withing groups sum of squares.

21

## What is planned comparison?

### Comparison of mean performance between groups that was planned before data collection.

22

## What is post hoc comparison?

### Secondary analysis that evaluates effects that were not hypothesised by the researcher.

23

## What is pretest posttest, natural control-group design?

### Design in which preexisting groups are measured before and after the manipulation of an independent variable.

24

## What is probe?

### Testing to see which groups are statistically different from one another.

25

## What is randomised, postest only, control-group design?

### Experimental design in which participants are randomly assigned to two groups, and each group is tested on the dependent variable after the independent variable.

26

## What is randomised, pretest-postest, control group design?

### Experimental design in which participants are randomly assigned to two groups and each participants is tested on the dependent variable both before and after the manipulation.

27

## What is single-group posttest only study?

### Nonexperimental design that involves manipulating the independent variabe and then taking a post manipulation measure on the dependent variable.

28

## What is single-group, pretest-postest study?

### Nonexperimental design in which participants are measured on a dependent variable both before and after manipulation.

29

## What is single-variable design?

### Designs that include just one independent variable.

30