Measures of Central Tendency

These flashcards cover key concepts related to measures of central tendency, including definitions and key terms used in statistics.

Measure of Central Tendency

A numerical index that summarizes and describes a data set by identifying the most typical value.

Mean

The arithmetic average of all values in a data set.

Median

The middle value in a data set when the data is ordered from lowest to highest.

Mode

The value that occurs most frequently in a data set.

Outlier

An unusually high or low value in a data set that can impact the mean.

Bimodal Distribution

A distribution that has two values occurring with the same highest frequency.

Multimodal Distribution

A distribution that has more than two values occurring with the same highest frequency.

Descriptive Statistics

Statistical methods that summarize and describe characteristics of a data set.

Interval Level of Measurement

A level of measurement where numbers are meaningful and represent equal intervals but do not have a true zero.

Ratio Level of Measurement

A level of measurement where numbers are meaningful, represent equal intervals, and have a true zero.

Ordinal Data

Categorical data that can be ordered but where the intervals between values are not necessarily consistent.

Nominal Data

Categorical data that cannot be ordered or ranked.