Exam 2: Descriptive Statistics: Tabular and Graphical Displays

​A graphical device for depicting categorical data that have been summarized in a frequency distribution, relative frequency distribution, or percent frequency distribution is a

Which of the following is not a recommended guideline for creating an effective graphical display?​

The sales records of a real estate company for the month of May shows the following house prices (rounded to the nearest $1,000).Values are in thousands of dollars. ​ a. Develop a frequency distribution and a percent frequency distribution for the house prices.(Use 5 classes and have your first class be 20 - 39.) b. Develop a cumulative frequency and a cumulative percent frequency distribution for the above data. c. What percentage of the houses are sold at a price below $80,000?

Data that provide labels or names for categories of like items are known as _____ data.

The test scores of 14 individuals on their first statistics examination are shown below. ​ Construct a stem-and-leaf display for these data.

You are given the following data on the age of employees at a company.Construct a stem-and-leaf display.

The sum of frequencies for all classes will always equal

In quality control applications, bar charts are used to identify the most important causes of problems.When the bars are arranged in descending order of height from left to right with the most frequently occurring cause appearing first, the bar chart is called a

The percent frequency of a class is computed by

A sample of fifteen 7-year old boys shows their favorite superheroes: ​ Which of the following is the correct percent frequency for Spiderman?

In a cumulative percent frequency distribution, the last class will have a cumulative percent frequency equal to

A sample of 15 children shows their favorite kind of pet: ​ ​ Which of the following distributions would be inappropriate for this data?

​In a stem-and-leaf display,

Thirty students in the School of Business were asked what their majors were.The following represents their responses (M = Management; A = Accounting; E = Economics; O = Others). ​ a. Construct a frequency distribution and a bar chart. b. Construct a relative frequency distribution and a pie chart.

​Which of the following is least useful in making comparisons or showing the relationships of two variables?

A display used to compare the frequency, relative frequency or percent frequency of two categorical variables is a​

The numbers of hours worked on homework (per week) by 400 statistics students are shown below. ​ The class width used in this frequency distribution is

​Histograms based on data on housing prices and salaries typically are

Which of the following graphical methods shows the relationship between two variables?

A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. ​ The above crosstabulation shows