Exam 3: Describing Data Visually

A population is of size 5,500 observations.When the data are represented in a relative frequency distribution,the relative frequency of a given interval is 0.15.The frequency in this interval is equal to

Which is a reason for using a log scale for time series data?

Excel's 3D pie charts are usually clearer than 2D pie charts.

Stacked dot plots are useful in understanding the association between two paired quantitative variables (X,Y).

Which is not a characteristic of a log scale for time series data?

We would use a pivot table to

Excel's pyramid charts

Dot plots may not reveal the shape of a distribution when the sample is small.

This histogram shows Chris's golf scores in his last 77 rounds at Devil's Ridge.Which is not a correct statement?

It is easier to read the data values on a 3D column chart than on a 2D column chart.

Pie charts are useful in displaying frequencies that sum to a total.

The zero origin rule may be waived for column or line charts if the objective is merely to visualize relative change over time.

Which of the following is least useful in visualizing categorical data?

The line chart is appropriate for categorical (qualitative)data.

Which is a characteristic of a histogram's bars?

Which is not a tip for effective column charts?

Briefly list strengths and weaknesses of this display.Cite specific principles of good graphs,as well as offering your own general interpretation.

Which is not a characteristic of a dot plot?

The column chart should be avoided if you are plotting time series data.

Line charts are not used for cross-sectional data.