Statistics Chapter 1 Vocab

Data

Consists of information coming from observations, counts, measurements, or responses

Statistics

The science of collecting, organizing, analyzing, and interpreting data in order to make decisions

Population

The collection of all outcomes, responses, measurements, or counts that are of interest

Sample

A subset of the population

Parameter

A numerical description of a population characteristic

Statistic

A numerical description of a sample characteristic

Descriptive Statistics

The branch of statistics that involves the organization, summarization, and display of data

Inferential Statistics

The branch of statistics that involves using a sample to draw conclusions about a population

Qualitative Data

Consists of attributes, labels, or nonnumerical entries

Quantitative Data

Consists of numerical measurements or counts

What type of data are at the nominal level of measurement?

Qualitative only.

Nominal Level of Measurement

Data at this level are categorized using names, labels, or qualities. No mathematical computations can be made at this level.

What type of data are at the ordinal level of measurement

Qualitative or Quantitative

Ordinal Level of Measurement

Data at this level can be arranged in order (can be ranked) , but differences between data entries are not meaningful

What type of data are interval level of measurement?

Quantitative

Interval Level of Measurement

The data can be ordered and you can calculate meaningful differences between data entries. In this level, a zero represents a position on a scale; not an inherent zero

Ratio Level of Measurement

A ratio of two data values can be formed so one data value can be expressed as a multiple of another. At this level a zero entry is an inherent zero

Inherent Zero

A zero that implies "none"