Week 1

Question 1

H1

Answer 1

The effect you expect to find

Question 2

H0

Answer 2

Null hypothesis, no evidence of effect

Question 3

Type 1 error

Answer 3

Conclude there is an effect when there is none. False positive

Question 4

Type 2 error

Answer 4

Conclude there is no effect when there is one. False negative.

Question 5

Systematic variation

Answer 5

The variation that can be explained by the model (the statistic)

Question 6

Unsystematic variation

Answer 6

The variation that cannot be explained by the model (the statistic)

Question 7

How are standard deviation and variance related

Answer 7

The standard deviation is equal to the square root of the variance

Question 8

Power analysis is an attempt to ..

Answer 8

Address type 2 errors

Question 9

Cohen’s d effect size boundaries are .20 for a small effect, .50 for a medium effect, and what for a large effect?

Answer 9

.80

Question 10

Pearson’s r and Omega effect size boundaries are .10 for a small effect, .50 for a large effect, and what for a medium effect?

Answer 10

.30

Question 11

The fourth core principle of the Singapore statement on research integrity is…
Honesty, accountability, professional courtesy and fairness, ..

Answer 11

Good stewardship

Question 12

Which statistics make assumptions about the data? Parametric or non-parametric?

Answer 12

Parametric statistics
(Normally distributed, homogeneity of variance)

Question 13

The replication crisis involved the attempted replication of 100 psychological studies and found what percentage able to be replicated?

Answer 13

36%