Exam 2: Descriptive Statistics: Tabular and Graphical Methods

A CFO is looking at how much the company is spending on computing.He samples companies in the pharmaceutical industry and develops the following stem-and-leaf graph. If you were creating a frequency histogram using these data,how many classes would you create?

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

A scatter plot can be used to identify outliers.

A CFO is looking at how much the company is spending on computing.He samples companies in the pharmaceutical industry and develops the following stem-and-leaf graph. What would be the class length used in creating a frequency histogram?

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.

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 (out of 360 degrees)should be assigned to each grade.

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.

Consider the following data on distances traveled by people to visit the local amusement park and calculate the relative frequency for the distances over 24 miles.

The US local airport keeps track of the percentage of flights arriving within 15 minutes of their scheduled arrivals.The stem-and-leaf plot of the data for one year is below. In developing a histogram of these data,how many classes would be used?

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.

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

A histogram that tails out toward smaller values is ___________.

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

In a Pareto chart,the bar for the OTHER category should be placed to the far left of the chart.

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.

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?

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

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

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

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