Exam 2: Graphical Descriptive Techniques 1

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.

The bar charts below summarize data collected on 100 adults regarding gender and pet ownership.Which of the following statements is (are)true based on this chart?

A(n)____________________ chart is not able to show frequencies.It can only show relative frequencies.

A college professor classifies his students according to their grade point average (GPA)and their gender.The resulting cross-classification table is shown below. If you made a pie chart for male GPAs and a pie chart for female GPAs,those pie charts would look the same.

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.

Before leaving a particular restaurant,customers are asked to respond to the questions listed below.For each question,determine whether the possible responses are interval,nominal,or ordinal. a.What is the approximate distance (in miles)between this restaurant and your residence? b.Have you ever eaten at this restaurant before? c.On how many occasions have you eaten at the restaurant before? d.Which of the following attributes of this restaurant do you find most attractive: service,prices,quality of the food,or the menu? e.What is your overall rating of the restaurant: excellent,good,fair,or poor?

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

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?

In purchasing an automobile,there are a number of variables to consider.The body style of the car (sedan,coupe,wagon,etc.)is an example of a(n)____________________ variable.

A bar chart is used to represent interval data.

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

Values must represent ordered rankings for what type of data?

All calculations are permitted on interval data.

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