Exam 2: Graphs,Charts and Tablesdescribing Your Data

The regional sales manager for a medical supply company recently collected data on the reasons why customers returned the merchandise for a refund.She actually formed a frequency distribution for this variable.It would now be acceptable to construct a bar chart to graphically display the results.

A bar chart possesses which of the following?

If you wish to construct a graph of a relative frequency distribution,you would most likely construct an ogive.

In creating a frequency distribution for numerical data,describe the steps in choosing the classes.

Which of the following is a reason for constructing a joint frequency distribution?

Recently a study of fans attending the New York Mets baseball games was conducted and 500 fans were surveyed.In forming a frequency distribution of the number of miles fans traveled from home to the stadium,it was found that 247 fans traveled between 0 and 5 miles.Based on this information what was the relative frequency for this class?

A pie chart is almost always constructed when the variable of interest is qualitative.

A study was recently done in which the brand preference for breakfast cereal was analyzed against the gender of the shopper.The study consisted of 200 male shoppers and 300 female shoppers.Three different cereal brands were considered: A,B,and C.A total of 250 female shoppers preferred brand A,25 female shoppers preferred brand C.A total of 100 shoppers preferred brand B.The number of male shoppers that preferred brand B was:

Which of the following is NOT true of a bar chart?

The managers at Harris Pizza in Boston have tracked the tips received by their drivers along with the total bill to the customer.An appropriate graph for analyzing the relationship between these two variables is:

A cumulative frequency distribution shows the percentage of observations for the variable of interest with values less than or equal to the upper limit of each class.

In analyzing a single quantitative variable,you will generally choose to use a scatter diagram if the variable is measured over time and a histogram if the variable is cross-sectional.

Another name for a joint frequency distribution is a cross-tabulation table.

Suppose that you have a data set of 512 observations and the data values range from 36 to 187.What classes would you choose for this data set? Explain why you would choose these values.

Two separate frequency distributions for two variables provide the same information as one joint frequency distribution involving the same two variables.

A stem and leaf diagram is an alternative to using:

A common rule of thumb for determining how many classes to use when developing a frequency distribution with classes is:

A bar chart is most likely used to display which of the following?

Why should a histogram contain no gaps between the bars but a bar chart may have gaps?

If two variables are graphed on the same line chart,two separate scales are always required.