Describing + Summarising Data

Question 1

What is categorical data?

Answer 1

Data that can be named and put into categories (qualitative)

Question 2

What is nominal data?

Answer 2

Data that is categorical but with no natural ordering

Question 3

Examples of nominal data

Answer 3

Blood groups
Sex
Eye colour

Question 4

What is ordinal data?

Answer 4

Categorical data that can be ordered

Question 5

Examples of ordinal data

Answer 5

Pain severity

Grades of cancer

Question 6

What is numerical data?

Answer 6

Data that can be assigned a number value (quantitative)

Question 7

What is discrete data?

Answer 7

Data that can only take certain whole number values

Question 8

Examples of discrete data

Answer 8

Number of children in a family

Number of asthma attacks in a week

Question 9

What is continuous data?

Answer 9

Data that can take any value (within a range) that is limited only by the accuracy of the intrsument

Question 10

Examples of continuous data

Answer 10

Age
Height
Weight

Question 11

What is binary data?

Answer 11

Nominal data that has only two outcomes

Question 12

Examples of binary data

Answer 12

Disease status (yes or no)

Question 13

Methods of displaying continuous data

Answer 13

Histogram
Dot plot
Steam and leaf plot
Box and whisker plot