Exam 2: Descriptive Statistics: Tabular and Graphical Presentations

For the following observations,plot a scatter diagram and indicate what kind of relationship (if any)exist between x and y.

Exhibit 2-3 Michael's Compute-All,a national computer retailer,has kept a record of the number of laptop computers they have sold for a period of 80 days.Their sales records are shown below: -Refer to Exhibit 2-3.If one develops a cumulative frequency distribution for the above data,the last class will have a frequency of

Exhibit 2-3 Michael's Compute-All,a national computer retailer,has kept a record of the number of laptop computers they have sold for a period of 80 days.Their sales records are shown below: -Refer to Exhibit 2-3.The lower limit of the first class is

A tabular method that can be used to summarize the data on two variables simultaneously is called

Exhibit 2-1 The numbers of hours worked (per week)by 400 statistics students are shown below. -Refer to Exhibit 2-1.The midpoint of the last class is

A situation in which conclusions based upon aggregated crosstabulation are different from unaggregated crosstabulation is known as

A frequency distribution is a tabular summary of data showing the

Exhibit 2-2 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. -Refer to Exhibit 2-2.What percentage of the students' undergraduate major is engineering?

The total number of data items with a value less than the upper limit for the class is given by the

In constructing a frequency distribution,as the number of classes are decreased,the class width

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

Exhibit 2-2 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. -Refer to Exhibit 2-2.Of those students who are majoring in business,what percentage plans to go to graduate school?

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

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

Exhibit 2-1 The numbers of hours worked (per week)by 400 statistics students are shown below. -Refer to Exhibit 2-1.The percentage of students who work at least 10 hours per week is

In a scatter diagram,a line that provides an approximation of the relationship between the variables is known as

Twenty employees of the Ahmadi Corporation were asked if they liked or disliked the new district manager.Below you are given their responses.Let L represent liked and D represent disliked. a.Construct a frequency distribution and a bar chart. b.Construct a relative frequency distribution and a pie chart.

A histogram is

Exhibit 2-1 The numbers of hours worked (per week)by 400 statistics students are shown below. -Refer to Exhibit 2-1.The cumulative relative frequency for the class of 20 - 29

Exhibit 2-1 The numbers of hours worked (per week)by 400 statistics students are shown below. -Refer to Exhibit 2-1.The number of students who work 19 hours or less is