Exam 2: Descriptive Statistics: Tabular and Graphical Methods

______________ and _____________ are used to describe qualitative (categorical)data.

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. Create a stem-and-leaf display for the sample.

When we wish to summarize the proportion (or fraction)of items in a class,we use the frequency distribution for each class.

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

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.

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

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

All of the following are used to describe quantitative data except the ___________.

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.

An example of manipulating a graphical display to distort reality is ___________.

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

A bar chart is a graphic that can be used to depict qualitative data.

All of the following are used to describe qualitative data except 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 Construct a stem-and-leaf 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.

Which of the following is the best analytic dashboard graphical method for visualizing hierarchical information?

A ______________ can be used to differentiate the "vital few" causes of quality problems from the "trivial many" causes of quality problems.

When data are qualitative,the bars should never be separated by gaps.

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 Construct a histogram.