CH 3

Question 1

What are the two types of structured data?

Answer 1

categorical and numerical

Question 2

categorical data

Answer 2

groups items with words
ex: male/female bankrupt/not bankrupt

Question 3

What are the two types of categorical data?

Answer 3

nominal and ordinal

Question 4

nominal data

Answer 4

can’t be ranked
ex: gender or transaction types (sale/return)

Question 5

ordinal data

Answer 5

allows ranking
ex: gold, silver, bronze
ex: date of transaction

Question 6

Numerical data

Answer 6

meaningful numbers
ex: age

Question 7

what are the two types of numerical data

Answer 7

interval and ratio

Question 8

interval data

Answer 8

equal intervals between each data point
NO meaningful zero
ex: temperature

Question 9

ratio data

Answer 9

equal definitive ratio between each data point and 0
ex: height or net income