Deck 10: Comparing

Question 1

In a two-way ANOVA,the error sum of squares can be calculated by?

A)SS_E = SS_T + SS_R + SS_C
B)SS_E = SS_R + SS_C - SS_T
C)SS_E = SS_T - SS_R - SS_C
D)SS_E - SS_R = SS_T + SS_C

Answer 1

C

Question 2

How are the degrees of freedom for interaction denoted for data displayed in columns (c)and rows (r)?

A)r - 1
B)c - 1 + r - 1
C)r(c - 1)
D)(r - 1)(c - 1)

Answer 2

D

Question 3

ANOVAs evaluate how likely differences between conditions are due to?

A)Sphericity
B)Normal distributions
C)Sampling error
D)Homogeneity of variance

Answer 3

C

Question 4

Which of the following is incorrect?

A)ANOVAs are robust when used in small samples of participants.
B)ANOVAs are robust to skewed data sets.
C)ANOVAs are robust to unequal numbers of scores in different conditions.
D)All of the above.

Question 5

ANOVAs cannot be used when testing data collected in educational research as it cannot be applied to social science.

Question 6

The number of degrees of freedom is the number of values in the final calculation of a statistic that are free to vary.

Question 7

Which of the following distributions is used for accepting the null hypothesis?

A)Poisson
B)Chi-square
C)Binominal
D)None of the above

Question 8

Any difference in population means in analysis of variance will inflate the error sum of squares.

Question 9

In a two-way ANOVA,the interaction between factors 1 and 2 should be tested first.

Question 10

The coefficient of determination is denoted by?

A)R²
B)SS_E + SS_T
C)(SS_E)²
D)SS_R - SS_T

Question 11

The probability that it is not small if bought by an administrator is?

A).505
B).612
C).999
D).002

Question 12

Using the same data set,the probability that a student bought the coffee is?

A).111
B).311
C).500
D).399

Question 13

Cups of coffee are sold at the Skool Café in three sizes (S,M,L),and customers fall into three categories (academics,administrators,students).The numbers of cups sold in a working day are as follows. Small Medium Large
Academics 12 25 27
Administrators 19 26 4
Students 30 10 11
Selecting one cup sold at random,the probability that it will be a large cup is?

A).256
B).333
C).500
D).111

Question 14

A two-way ANOVA is conducted and the error sum of squares is worked out as 140.59.If the researcher chooses to ignore one of the factors and perform a one-way ANOVA with the same data,the error sum of squares will be smaller than 140.59.

Question 15

What does ANOVA stand for?

A)Analysis of vulnerability
B)Analysis of variance
C)Analysis of vaccination
D)Analysis of velocity

Question 16

The calculation for the sum of squares due to column factor for one-way ANOVAs is given by?

A)SS_T + SS_E
B)SS_E - SS_T
C)SS_T - SS_E
D)SS_T × SS_E

Question 17

Into how many rows in a two-way ANOVA is total variance partitioned?

A)1
B)2
C)3
D)4

Question 18

The treatment sum of squares measures the variability of the sample treatment means around the overall mean.

Question 19

When sample size is large,which of the following assumptions can be ignored?

A)That each sample will have an equal variance
B)That samples have been drawn from a normal population
C)Both
D)Neither

Question 20

What type of data are best analysed in ANOVA?

A)Correlational
B)Random
C)Experimental
D)Simple

Question 21

ANOVA tells us that there is a difference due to our independent variable(s)and where the differences lie.

Question 22

The sum of squares due to interaction is not found in an ANOVA table for a randomized block design.

Question 23

While conducting a two-way ANOVA,you conclude that significant interaction does exist between factors 1 and 2.Next you should test the significance of the main effects.