Week 5-One-way anova

Question 1

ONE-way anova is between subjects.. TRUE OR FALSE

Answer 1

TRUE

Question 2

Nonparametric data use the.. tests..
A)Kruskal-Wallis
B)Jonckheere 
C)Chi-square test 
D)Friedman test
E) A,B

Answer 2

E)A,B

Question 3

Nominal data use the .... test.
A)Kruskal-Wallis
B)Jonckheere 
C)Chi-square test 
D)Friedman test
E) A,B

Answer 3

C) chi-squared test of association

Question 4

Type 1 error is..
A) incorrect rejection of a true null hypothesis.
B) incorrect rejection of alternative hypo
C) acception of a true null hypo

Answer 4

A) incorrect rejection of a true null hypothesis.

Question 5

Type 2 error is.
A) incorrect rejection of a true null hypothesis.
B) incorrect rejection of alternative hypo
C) acception of a true null hypo
D) failure to reject false null hypo

Answer 5

D) failure to reject false null hypo

Question 6

If we power our study to 0.8, this means our beta is 0.2, we have a ....% chance of type 2..
A) 30%
B)80%
C) 20% 
D) 2%

Answer 6

C)20%

Question 7

family wise error equation.

Answer 7

=1- (1- à)squared by N
a=alpha 
N=number of tests 
e.g. 
5 tests= 1- (1-0.05)5
=0.23
(23% error rate)

Question 8

Assumptions of one-way ANOVA..

Answer 8

• samples are independant
• interval/ratio
• Data normally distributed
• homogeneity of variance

Question 9

ordinal data a non-parametric .. test should be used.
A) t-test
B) Kruskal-Wallis
C)Chi-square test 
D)Friedman test

Answer 9

B) Kruskal-Wallis

Question 10

Error variance is..

Answer 10

Mean Square error (MSE)

Question 11

anova compares…

Answer 11

variance you want (effect) VS the variance you don’t (error variance)

Question 12

F-ratio is the ratio between….

Answer 12

Effect: error

Question 13

When the treatment/manipulation creates little variability in scores, the ANOVA is expected to produce an F statistic close too. 
A)0
B)1
C)10
D) 100

Answer 13

B)1

Question 14

Larger F stat may indicate a..
A) sig difference 
B) non-sig difference 
C)no relationship 
D)Doesn't matter what size

Answer 14

A) sig difference

Question 15

F can never be negative. TRUE OR FALSE

Answer 15

TRUE

Question 16

F is almost never less than 1. TRUE OR FALSE

Answer 16

TRUE

Question 17

indépendant anova is the ratio of variance between: within groups (MSbetween/MSwithin)

Answer 17

TRUE

Question 18

Significant effects occur when you have at
least four times as much variance between your groups as you do within your groups
TRUE OR FALSE

Answer 18

TRUE

Question 19

F ratio is..

Answer 19

Variability BETWEEN treatment conditions / variability WITHIN treatments conditions

(EFFECT + ERROR) / ERROR

Question 20

Control = 20 
Deadlifts = 90 
Effect of IV=? 
A)70 
B) 110 
C)0.22
D) 4.5

Answer 20

A) 70

Question 21

Control = 20 
Deadlifts = 90 
Effect of IV=? 
Error=0
A)70 
B) 110 
C)0.22
D) 4.5

Answer 21

A) 70

Question 22

Error=4.66
Effect= 0
F=?

Answer 22

4.66/4.66 =1 (F=1)

Question 23

If my F value is greater than critical we..
A) accept null
B) reject null

Answer 23

B) reject null

Question 24

What test is used to determine which pairs of means are different from one another..
A) Chi squared 
B) post hoc 
C)t-test
D)non parametric

Answer 24

B)Post Hoc