Chapter 9 Vocabulary Words

The entire group being studied.

• Population

• Sample

• Variable

• Data

A subset of the population selected for analysis.

• Population

• Sample

• Variable

• Data

A characteristic or property that can take different values.

• Population

• Sample

• Variable

• Data

Collected values of variables (e.g., numbers, categories).

• Population

• Sample

• Variable

• Data

ata that represent categories (e.g.,
gender, colors).

• Qualitative (Categorical) Data

• Quantitative (Numerical) Data

• Discrete Data

• Continuous Data

Data that represent numbers (e.g., height,
age)

• Qualitative (Categorical) Data

• Quantitative (Numerical) Data

• Discrete Data

• Continuous Data

Countable values (e.g., number of students in a
class).

• Qualitative (Categorical) Data

• Quantitative (Numerical) Data

• Discrete Data

• Continuous Data

Measured values that can take any number within
a range (e.g., weight, time).

• Qualitative (Categorical) Data

• Quantitative (Numerical) Data

• Discrete Data

• Continuous Data

Sum of values divided by the number of values.

• Mean (Average)

• Median

• Mode

The middle value when data are arranged in order.

• Mean (Average)

• Median

• Mode