Introduction to Statistics

Why study statistics?

Identify each of the following examples as qualitative or quantitative variables.

• The sport club for each student in a statistics class.

• The length of time to complete a mathematics homework assignment.

• The amount of petrol pumped by the next 10 customers at the local Shell station.

• The amount of rats in each of 25 homes in a new development.

• The color of the baseball cap worn by each of 20 students.

Identify each of the following as examples of nominal, ordinal, discrete, or continuous variables: 1.The length of time until a pain reliever begins to work.

Identify each of the following as examples of nominal, ordinal, discrete, or continuous variables: 2. The number of chocolate chips in a cookie.

Identify each of the following as examples of nominal, ordinal, discrete, or continuous variables: 3.The number of colors used in a statistics textbook.

Identify each of the following as examples of nominal, ordinal, discrete, or continuous variables: 4.The brand of refrigerator in a home.

Identify each of the following as examples of nominal, ordinal, discrete, or continuous variables: 5.The overall satisfaction rating of a new car.

Identify each of the following as examples of nominal, ordinal, discrete, or continuous variables: 6.The number of files on a computer’s hard disk.

Identify each of the following as examples of nominal, ordinal, discrete, or continuous variables: 7.The pH level of the water in a swimming pool.

Identify each of the following as examples of nominal, ordinal, discrete, or continuous variables: 8.The number of staples in a stapler.