Intro to Statistics

Identify the population:

A survey of 500 adults in the U.S. found that 54% drink coffee daily.

• A. Collection of the 500 adults surveyed

• B. Collection of all adults in the U.S.

• C. 54%

• D. 500

Identify the sample:

A survey of 500 adults in the U.S. found that 54% drink coffee daily.

• A. Collection of the 500 adults surveyed

• B. Collection of all adults in the U.S.

• C. 54%

• D. 500

True or false:

The costs of items in a shopper’s grocery cart represent quantitative data.

• A. TRUE

• B. FALSE

Identify the data set’s level of measurement:

The nationality of each person on an airplane.

• A. Ordinal

• B. Nominal

• C. Interval

• D. Ratio

Identify the data set’s level of measurement:

The salaries of nurses at a hospital.

• A. Nominal

• B.Ordinal

• C. Interval

• D. Ratio

Identify the sampling technique used:

Students are classified according to major. Twenty students are selected from each major and asked how often they use the library.

• A. Random sample

• B. Stratified sample

• C. Cluster sample

• D. Systematic sample

A scientific body of knowledge which deals with collection, presentation, interpretation and analysis of data.

• Probability

• Statistics

• Sequence

• Geometry

Facts , or a set of information or observation under study.

• Data

• Population

• Sample

• Variable

It is the collection of all individuals or objects from which the required information is to be obtained.

• Data

• Population

• Sample

• Variable

It is a small portion or part of a population.

It is the subgroup, subset or the representative of a population.

• Data

• Population

• Sample

• Variable