Chapter 5 addendum - Type 1 and 2 errors

Question 1

When Null hypothesis is True but you reject it you get what?

Answer 1

Type 1 error: false positive

Question 2

when null hypothesis is false but you accept it, what do you get?

Answer 2

Type 2 error: False Negative

Question 3

What type of error do we make if we fail to find an effect on the population when there is one?

Answer 3

A Type 2 error

Question 4

A Type 1 error is when we say

Answer 4

there is an effect on the population when there isn’t one.

Question 5

The alpha value or significance level tells us the probability of getting what type of error?

Answer 5

Type 1 error

Question 6

If you reject the null hypothesis, what are the two outcomes?

Answer 6

If null is true then you commit a type 1 error. If null is false then you’re correct.

Question 7

If you don’t reject the null hypothesis, what are the two outcomes?

Answer 7

If null is true then you’re correct. If it is false, you commit a type 2 error.

Question 8

Null hypothesis that is false but accepted

Answer 8

Type 2 error / false negative

Question 9

null hypothesis that is true is rejected

Answer 9

False positive / Type 1 error