Exam 2: Graphical Descriptive Techniques I

We can summarize nominal data in a table that presents the categories and their counts.This table is called a(n) ____________________ distribution.

You can graph the relationship between two nominal variables using two ____________________ or two ____________________.

In purchasing a used computer, there are a number of variables to consider.The age of the computer is an example of a(n) ____________________ variable.

For each of the following examples, identify the data type as nominal, ordinal, or interval. a. The final grade received by a student in a neuro-science class. b. The number of students in a Physics course. c. The starting salary of a PhD graduate. d. The size of an order of fries (small, medium, large, super-size) purchased by a Burger King customer. e. The college you are enrolled in (Arts and Sciences, Business, Education, etc.).

In a pie chart, each slice is proportional to the ____________________ of individuals in that category.

A statistics professor classifies his students according to their grade point average (GPA) and their gender.The resulting cross-classification table is shown below. Which of the following describes the relationship between GPA and gender shown by this table?

If two nominal variables are unrelated, then the patterns exhibited in their corresponding pie charts should be approximately the same.If some relationship exists, then some pie charts will differ from others.

The Chief of Police conducted a survey of the officers on his squad.An officer's shooting score at target practice is an example of a(n) ____________________ variable.

In the following cross-classification table, how are gender and house ownership related?

Using the following cross-classification table, draw two pie charts that compare pet ownership for males vs.females.Are gender and pet ownership related?

A researcher wishes to estimate the textbook costs of first-year students at Barry University.To do so, he recorded the textbook cost of 300 first-year students and found that their average textbook cost was $195 per semester.The variable of interest to the researcher is

The final grade received in a Literature course (A, B, C, D, or F) is an example of a(n) ____________________ variable.

A(n) ____________________ chart is often used to display frequencies; a(n) ____________________ chart graphically shows relative frequencies.

When studying the responses to two nominal questions, we should develop a

The percentage of observations in each combination of the cross-classification table must be equal in order to show two nominal variables are not related.

The Dean of Students conducted a survey on campus.Class rank (Freshman, Sophomore, Junior, and Senior) is an example of a(n) ____________________ variable.

The Dean of Students conducted a survey on campus.The gender of each student is an example of a(n) ____________________ variable.

All calculations are permitted on what type of data?

One of the advantages of a pie chart is that it clearly shows that the total percentages of all the categories add to 100%.

Your final grade in a course (A, B, C, D, E) is a nominal variable.