Chapter 3, Problem 1CR

Name two attractive features and two limitations of the (a) stem-and-leaf plot and (b) dot plot.

To determine

Give two attractive features and two limitations of the stem-and-leaf plot.

Explanation of Solution

Stem-and-leaf plot:

The simple way that is used to visualize the small data sets is termed as stem-and-leaf plot.

The two attractive features are,

• It is a tool for exploratory data analysis which reveals the data features.
• It divides the data into two parts, such that, stem and leaf.

The two limitations are,

• It only works well on small samples.
• It is not appropriate for decimal data and multi digit data.

To determine

Give two attractive features and two limitations of the dot plot.

Explanation of Solution

Dot plot:

One of the simple graphical displays of a group of individual values of numerical data is termed as dot plot.

The two attractive features are,

• It is an attractive tool for data exploration.
• Outliers are easily identified in the dotplot.

The two limitations are,

• It’s not useful to compare more than 2 sequences.
• The frequency of a data value is not identified in a dotplot.