Exam 2: Tabular and Graphical Methods

The accompanying chart shows the numbers of books written by each author in a collection of cookbooks.What type of chart is this?

A bar chart depicts the frequency or relative frequency of each category of qualitative data as a bar rising vertically from the horizontal axis.It is also acceptable for the bar to extend horizontally from the vertical axis.

Exhibit 2-9.An analyst constructed the following frequency distribution on the monthly returns for 50 selected stocks: Refer to Exhibit 2-9.The number of stocks with returns of 0% up to 10% is ________.

Exhibit 2-8.Consider the following frequency distribution. Refer to Exhibit 2-8.The total number of observations in the frequency distribution is _____.

When constructing a scatterplot for two quantitative variables,we usually refer to one variable as x and another one as y.Typically,we graph x on the vertical axis and y on the horizontal axis.

Exhibit 2-5.The following data represent scores on a pop quiz in a statistics section: Refer to Exhibit 2-5.Suppose the data on quiz scores will be grouped into five classes.The width of the classes for a frequency distribution or histogram is closest to _____.

What type of relationship is indicated in the scatterplot?

Exhibit 2-11.The accompanying relative frequency distribution represents the last year car sales for the sales force at Kelly's Mega Used Car Center. Refer to Exhibit 2-11.If Kelly's employs 100 salespeople,how many of these salespeople have sold at least 65 cars in the last year?

Exhibit 2-13.The organization of the Girl Sprouts has completed its annual cookie drive.The sales are reported in the accompanying ogive. Refer to Exhibit 2-13.Approximate the percentage of girls who sold less than 90 boxes of cookies.

The accompanying chart shows the number of books written by each author in a collection of cookbooks.What type of data is being represented?

A statistics instructor computes the grade and percentage of classes that each of his students attends.Construct a scatterplot from the data displayed next.Does a relationship exist between attendance and grade?

An ogive is a graph that plots the cumulative frequency (or the cumulative relative frequency)of each class above the lower limit of the corresponding class.

Exhibit 2-2.The following is a list of five of the world's busiest airports by passenger traffic for 2010. Refer to Exhibit 2-2.The percentage of passenger traffic in the five busiest airports that occurred in Asia is closest to __________.

Exhibit 2-9.An analyst constructed the following frequency distribution on the monthly returns for 50 selected stocks: Refer to Exhibit 2-9.The proportion of stocks with returns of 0% up to 10% is _____.

In the following pie chart representing a collection of cookbooks,which author has more titles?

Exhibit 2-5.The following data represent scores on a pop quiz in a statistics section: Refer to Exhibit 2-5.Suppose the data is grouped into 5 classes,and one of them will be "30 up to 44"-that is,{x;30 ≤ x < 44}.The frequency of this class is ____.

For which of the following data sets will a pie chart be most useful?

What graphical tool is best used to display the relative frequency of grouped quantitative data?

What type of relationship is indicated in the scatterplot?

Exhibit 2-3.A city in California spent six million dollars repairing damage to its public buildings in 2010.The following table shows the categories where the money was directed. Refer to Exhibit 2-3.How much did the city spend to fix damage caused by mold?