Stats 5: Hypotheses

Question 1

Why is Hypothesis testing done?

Answer 1

To see if any difference is significant

Question 2

What does the Null Hypothesis show?

Answer 2

That there is no significant difference and any is due to chance

Question 3

What does a probability of 0 signify?

Answer 3

That something definitely won’t happen

Question 4

What does a probability of 1 signify?

Answer 4

That something definitely will happen

Question 5

What does a value mean if its closer to 1?

Answer 5

Its more likely to happen

Question 6

What does it mean the lower the P value is?

Answer 6

The more significant the finding is

Question 7

What happens if value is below 0.05?

Answer 7

The value is found to be significant

Question 8

Where will P value be if close to hypothesis?

Answer 8

Closer to 1 (large), so difference is likely due to chance

Question 9

How does SE, sample size and P value link together?

Answer 9

The larger the sample size, the smaller the SE and p value

Question 10

Distinction between statistical and clinical significance?

Answer 10

Although test may be statistically significant, may not be clinically significant as e.g. could cause harm or not effective enough for money