Chapter 1-2 Variables and Types of Data

Question 1

Qualitative Variables

Answer 1

Variables that can be placed into distinct categories, according to some characteristic or attribute

Question 2

Quantitative Variables

Answer 2

Variables that are numerical and can be ordered or ranked

Question 3

Discrete Variables

Answer 3

Assume values that can be counted

Question 4

Continuous Variables

Answer 4

Can assume an infinite number of values between any two specific values. They are obtained by measuring. They often include fractions and decimals.

Question 5

Measurement Scales

Answer 5

how variables are categorized, counted, or measured. There are four common types of scales used: nominal, ordinal, interval, and ratio.

Question 6

Nominal Level of Measurement

Answer 6

Classifies data into mutually exclusive (nonoverlapping) categories in which no order or ranking can be imposed on the data

Question 7

Ordinal Level of Measurement

Answer 7

Classifies data into categories that can be ranked; however, precise differences between the ranks do not exist

Question 8

Interval Level of Measurement

Answer 8

Ranks data and precise differences between units of measure do exist; however, there is no meaningful zero

Question 9

Ratio Level of Measurement

Answer 9

Possesses all the characteristics of interval measurement, and there exists a true zero. In addition, true ratios exist when the same variable is measured on two different members of the population.