Exam 2: Frequency Distributions and Graphs

An automobile dealer wants to construct a pie graph to represent types of cars sold in July. He sold 72 cars, 16 of which were convertibles. How many degrees should be used for the convertibles section ?

For grouped frequency distributions, the __________ is obtained by adding the lower and upper limits and dividing by 2.

Which of the following pairs of class limits would be appropriate for grouping the numbers 10, 13, 8, and 15 ?

The __________ of a specific class is the number of data values contained in it.

A local fundraiser wants to graphically display the contributions he has received over the past five years. Construct a time series graph for the following data.

Find the class with the least number of data values.

Construct a Pareto chart for the following distribution:

Construct a pie chart for the following distribution:

A Pareto chart arranges data from largest to smallest according to frequencies.

A __________ graph would most appropriately represent the number of students that were enrolled in Statistics for each of the past ten years.

The three most commonly used graphs in research are the histogram, the __________, and the cumulative frequency graph (ogive).

A time series graph is useful for which of the following purposes?

Which of the following is a Pareto chart?