Choosing A Statistical Test

Question 1

what are the types of data?

Answer 1

• nominal
• ordinal
• interval

Question 2

what is nominal data?

Answer 2

data which is represented in the form of categories
- data is discrete(one item can only appear in one of the categories)

Question 3

what is ordinal data?

Answer 3

data ordered in some way (e.g. test scores)
- lacks precision as they are based on subjective opinions (e.g.questionnaires)

Question 4

what is interval data?

Answer 4

data is based on numerical scales which includes units of equal, precisely defined size
- e.g. temperature, weight

Question 5

what is the acronym used to memorise the table?

Answer 5

carrots should come mashed with sweetcorn under roast potatoes

Question 6

what is the first step of choosing a statistical test?

Answer 6

• looking for a difference between conditions/groups
• looking for a correlation

Question 7

what is the second step of choosing a statistical test?

Answer 7

• this is only for tests for difference
• unrelated design = independent group designs
• related design = repeated measures, matched pairs(ppts are related on some variable)

Question 8

what is the final step of choosing a statistical test?

Answer 8

levels of measurement
- ordinal, nominal, ordinal