Probability And Significance

Question 1

Probability

Answer 1

A measure of the likelihood that a particular event will occur where zero indicates just take one possibility and one represent statistical certainty.

Question 2

Why change the P level

Answer 2

Reduces the change of type 1 and type 2 errors occurring

Question 3

Significance

Answer 3

How sure we are there a difference or correlation exists

Question 4

What is the standard level of significance used in psychology

Answer 4

0.05 = 5%
P < 0.05

Question 5

Critical value

Answer 5

When testing hypothesis the numerical boundary between acceptance and rejection of a null hypothesis

Question 6

Type 1 error

Answer 6

Accepted the alternative hypothesis and rejected the null hypothesis, when you should have rejected alternative and accepted hypothesis

Question 7

False positive

Answer 7

Claimed to have found significance but actually don’t

Question 8

Type 2 error

Answer 8

Accepted the null and rejected the alternative hypothesis, when you should have rejected the null and accepted the alternative hypothesis

Question 9

False negative

Answer 9

Claimed to have no significance but actually do have significance

Question 10

Alternative hypothesis

Answer 10

We write a hypothesis starting that we expect to find a difference

Question 11

Null hypothesis

Answer 11

We also write one at the start of the study in case our results are not significant starting that there will be no difference or correlation