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

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 Construct a stem-and-leaf display.

822 recently purchased books were randomly selected from all recent book purchases over the Internet. The chart below shows the breakdown of the classification of the book type. What percentage of the books in the sample were in the top two categories?

Splitting the stems refers to assigning the same stem to two or more rows of the stem-and-leaf display.

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 smallest percentage spent on R&D?

Which of the following is not a graphical tool for descriptive analytics (dashboards)?

The following is a partial relative frequency distribution of grades in an introductory statistics course. Find the relative frequency for the B grade.

A relative frequency histogram having a longer tail to the right than to the left is said to be ________.

Using the following data, what would be the leaf unit in a stem-and-leaf display?

As a general rule, when creating a stem-and-leaf display, there should be ________ stem values.

________ can be used to study the relationship between two variables.

822 recently purchased books were randomly selected from all recent book purchases over the Internet. The chart below shows the breakdown of the classification of the book type. What percentage of the books in the sample were self-help books?

A plot that allows us to visualize the relationship between two variables is a(n) ________ plot.

In the first step of setting up a Pareto chart, a frequency table should be constructed of the defects (or categories) in decreasing order of frequency.

The following is a relative frequency distribution of grades in an introductory statistics course. If we wish to depict these data using a pie chart, find how many degrees should be assigned to the highest grade of A.

Which of the following divides quantitative measurements into classes and graphs the frequency, relative frequency, or percentage frequency for each class?

The following is a relative frequency distribution of grades in an introductory statistics course. If this was the distribution of 200 students, find the frequency for the highest two grades.

Math test anxiety can be found throughout the general population. A study of 116 seniors at a local high school was conducted. The following table was produced from the data. Complete the missing parts.

A type of very simple graph that can be used to summarize a quantitative data set is a(n) ________.

The relative frequency is the frequency of a class divided by the total number of measurements.

The following is a relative frequency distribution of grades in an introductory statistics course. If this was the distribution of 200 students, give the frequency distribution for this data.