Inferentail Statistics

Question 1

How do you complete a statistical test ?

Answer 1

1. Is it a test if difference or a correlation
2. Whats the experimental design
3. What was the level of measurement

Question 2

What are the 3 levels of measurements

Answer 2

Nominal
Ordinal
Interval/ratio

Question 3

Whats nominal data

Answer 3

This is the most basic level of measurement as described as category data.
Gives us vert little data.
Frequency data
Example: do you smoke? Yes or no

Question 4

Whats ordinal data

Answer 4

Data that is ordered through a ranking (on a scale)
Based on a subjective opinion

Question 5

What’s interval and ratio data

Answer 5

Interval = go bellow 0

Ratio = starts at 0

This is the most precise data as it tells you the most

Question 6

Statistical table

Answer 6

Carrots should come mashed with swede under roast potatoes

Chi-squared
Sign test
Chi-square
Mann Whitney
Wilcoxon
Spearmen’s rho
Unrelated t-test
Related t-test
Persons r

Question 7

Whats a type 1 error

Answer 7

This is when the probability is too lenient

For example a probability above 0.05

This can give us a false positive because we accept our hypothesis when we should have accepted our null hypothesis.

Question 8

What’s a type 2 error

Answer 8

When you are too strict

For example a probability bellow 0.05

This can give us a false negative as we accept our null hypothesis when we should have accepted our actual hypothesis.