Exam 2: Descriptive Statistics: Tabular and Graphical Methods

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

Which of the following graphical tools is not used to study the shapes of distributions?

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 an Ogive plot

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

A(n)______ is a graph of a cumulative distribution.

A ________ is a graph of cumulative distribution.

A CFO is looking at how much of a company's resources are spent on computing.He samples companies in the pharmaceutical industry and developed the following stem-and-leaf graph. If a frequency histogram were to be created using these data,how many classes would you create?

A CFO is looking at how much of a company's resources are spent on computing.He samples companies in the pharmaceutical industry and developed the following stem-and-leaf graph. What would be the first class interval for the frequency histogram?

The percentage of measurements in a class is called the _____ of that class.

The following is a relative frequency distribution of grades in an introductory statistics course. Construct a percent frequency bar chart for this data.

When establishing the classes for a frequency table it is generally agreed that the more classes you use the better your frequency table will be.

If there are 62 values in a data set,how many classes should be created for a frequency histogram?

A ______________ shows the relationship between two variables.

When grouping a large sample of items into classes,the ______________ is a better tool than the ___________.

A graphical display of categorical data made up of vertical or horizontal bars is called a _____.

The local electronics retailer has recently conducted a study on purchasers of large screen televisions.The study recorded the type of television and the credit account balance of the customer at the time of purchase.The following results were obtained: What percentage of the customers with the highest credit balances purchased an LCD television?

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

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

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

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