ANOVA

Question 1

Normal distributions are
A curved B asymmetric C sloped D symmetric

Answer 1

D symmetric

Question 2

The two distribution parameters are________ and _____

Answer 2

mean and SD

Question 3

When conducting an ANOVA , the distribution must be ____________-

Answer 3

Normal

Question 4

If distributions from groups are overlapping, we accept __________, if they differ we accept_______

Answer 4

Overlap = accept H0
Different = accept H1

Question 5

What are the two main classifications of experimental error?

Answer 5

Measurement error
Individual differences error

Question 6

Small sample sizes can increase the risk of
A Measurement error B individual differences error C noise D demand characteristics

Answer 6

B individual error

Question 7

Between group deviation is difference between _________ mean and _______ mean

Answer 7

grand mean - group mean

Question 8

Within group deviation refers to deviation between ______ mean and an individual _________

Answer 8

group mean - individual score

Question 9

Total deviation refers to the difference between _________ mean and individual __________

Answer 9

grand mean - individual value

Question 10

Th F ratio uses what 2 types of variance

Answer 10

within group variation and between group variation

Question 11

Between group variance combines experimental error with ______________, whilst within group variance _________

Answer 11

with treatment effect, within variance does not

Question 12

Variance is also known as the __________

Answer 12

Sum of squares?

Question 13

SSR refers to

Answer 13

within groups variance

Question 14

SSA refers to

Answer 14

between groups variance

Question 15

SST refers to

Answer 15

total variance

Question 16

SS__ = SS__ + SS___

Answer 16

SST = SSR + SSA

Question 17

Variance = _______________________
.

Answer 17

Sum of squared deviations / df

Question 18

degrees of freedom with regards to sum of squares refers to the number of ____________

Answer 18

Scores with independent information that are free to vary, and are entered into the calculation

Question 19

The df within group is what equation. DFR =

Answer 19

N-K

Question 20

In terms of degrees of freedom, N refers to ____________, whereas K refers to ___________

Answer 20

N = total no of observations (sample size)
K = total no of treatment groups (levels)

Question 21

The df between groups is , DFA =

Answer 21

K-1

Question 22

the total degrees of freedom is, DFT =

Answer 22

N-1

Question 23

Mean squared error, MSE = _________/_________

Answer 23

sum of squared deviations / degrees of freedom

Question 24

The MSE for between groups is MSA = ________/__________

Answer 24

SSA/DFA

Question 25

The MSE for within groups is MSR = _______/________

Answer 25

SSR/DFR

Question 26

The F ratio equation can be described is, F = _________/__________

Answer 26

variance between groups/ variance within groups

Question 27

If H0 is true, there is no ____________ effect

Answer 27

treatment

Question 28

A larger F ratio means that ________ is less likely to be true

Answer 28

H0

Question 29

How many df values are needed to determine f distribution

Answer 29

2 df values

Question 30

When conducting an ANOVA, We reject H0 when ___________>___________

Answer 30

When F value (observed) > critical f value

Question 31

In an F table the rows refer to the ____________, whereas columns refer to __________

Answer 31

Rows = dfr = dfwithin = error
Columns = dfA = dfbetween = effect

Question 32

What are the 3 ANOVA assumptions?

Answer 32

Independence, homogeneity of variance, and normality

Question 33

Homogeneity of variance tests uses a ____________ test for between group designs, and a _______ test for within group or mixed designs

Answer 33

between groups = bartlett
Mixed/within = Box’s M

Question 34

The 3 types of normaility tests are __________, __________ and __________

Answer 34

skewness, Shapiro Wilk, and Kolgomorov Smirnov

Question 35

The skewness tests use a ______ statistic

Answer 35

Z statistic

Question 36

Skewness in a z test is shown when z>_______

Answer 36

1.96

Question 37

If the data is positively or negatively skewed, what can be done to change this?

Answer 37

Data transformations

Question 38

Data transformations must be _____________ and they must not ____________

Answer 38

Must be monotonic, and must not violate new assumptions

Question 39

Data transformations reduce
A type 1 error B experimental error C measurement error D type 2 error

Answer 39

D type 2 error