Exam 2: Descriptive Statistics and Analytics: Tabular and Graphical Methods

All of the following are used to describe qualitative data except the ________.

Fill in the missing components of the following frequency distribution constructed for a sample size of 50.

The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20, 21, 8, 17, 22, 19, 18, 19, 14, 17, 11, 6, 21, 25, 4, 19, 9, 12, 16, 16, 10, 28, 24, 6, 21, 20, 25, 5, 17, 8 How many classes should be used in constructing a histogram?

Consider the following data on distances traveled by people to visit the local amusement park. Construct an ogive that corresponds to the frequency table.

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide. The following results were obtained. What percentage of those surveyed were female and could not recall the company?

Consider the following data. Create a stem-and-leaf display for the sample.

The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20, 21, 8, 17, 22, 19, 18, 19, 14, 17, 11, 6, 21, 25, 4, 19, 9, 12, 16, 16, 10, 28, 24, 6, 21, 20, 25, 5, 17, 8 Complete this frequency table for these data.

Consider the following data on distances traveled by people to visit the local amusement park and calculate the relative frequency for the shortest distance.

If there are 130 values in a data set, how many classes should be created for a frequency histogram?

A frequency table includes row and column percentages.

The following table lists the types of customer complaint calls on satellite TV service during the first two months after installation. Construct a Pareto chart.

As a business owner, I have requested my staff to develop a set of dashboards that can be used by the public to show wait time at each of my four local coffee shops at peak times during the day and whether the time is short, medium, or long. Which of the following graphical displays would be the best choice?

Stem-and-leaf displays and dot plots are useful for detecting outliers.

If space is an issue when presenting analytic dashboard graphics, gauges should be used most frequently.

When constructing a graphical display that utilizes categorical data, classes that have frequencies of 5 percent or less are usually combined together into a single category.

The general term for a graphical display of categorical data made up of vertical or horizontal bars is called a(n) ________.

The number of measurements falling within a class interval is called the ________.

The number of weekly sales calls by a sample of 25 pharmaceutical salespersons is below. 24, 56, 43, 35, 37, 27, 29, 44, 34, 28, 33, 28, 46, 31, 38, 41, 48, 38, 27, 29, 37, 33, 31, 40, 50 What is the shape of the distribution of the data?

A CFO is looking at what percentage of a company's resources are spent on computing. He samples companies in the pharmaceutical industry and develops the following stem-and-leaf display (leaf unit = 0.1). What is the approximate shape of the distribution of the data?

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide. They obtained the following results. Construct a table of row percentages.