Exam 2: Descriptive Statistics: Tabular and Graphical Displays

The proper way to construct a stem-and-leaf display for the data set {62, 67, 68, 73, 73, 79, 91, 94, 95, 97} is to

What type of graph is depicted below?

A market research firm has conducted a study to determine consumer preference for a new package design for a particular product. The consumers, ages were also noted. a.Which package design was most preferred overall? b.What percent of those participating in the study preferred package A? c.What percent of those less than 25 years of age preferred package A? d.What percent of those aged 25 - 40 preferred package A? e.Is the preference for package A the same for both age groups?

A summary of the results of a job satisfaction survey follows. What is wrong with the relative frequency distribution?

The ages of employees at a company represent

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The percentage of students working 10 - 19 hours is

For the following observations, plot a scatter diagram and indicate what kind of relationship (if any) exists between the amount of sugar in one serving of cereal (grams) and the amount of fiber in one serving of cereal (grams).

A graphical device for presenting categorical data summaries based on subdivision of a circle into sectors that correspond to the relative frequency for each class is a

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The cumulative frequency for the class of 20 - 29

A tabular summary of data showing the percentage of items in each of several nonoverlapping classes is a

The sum of the frequencies in any frequency distribution always equals

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The class width for this distribution