Comparing Data with Dot Plots & Box Plots

T.i.P.S.

Students should be able to analyze and interpret two sets of data using either dot plots or box plots to answer questions and make decisions about their shape, center, or spread. Students should understand what the different components of box plots are in relation to the situation. Students should also understand what the shape of a box or dot plot implies about a situation.

Example

Read the two problem situations below.   Example 1  a) Ms. Johnson looked at the scores from two different math classes which is shown on the dot plots below. What conclusions can you draw about the spread of the data of class scores?  

   

Example 2 

b) The data for the end of semester test scores were collected in Mrs. Smith’s 1^st and 2^nd period classes. The data are displayed in the box plots shown below. What conclusions can be made about the centers of the data in the box plots? 

   

Hint 

Possible Solution

TEKS

Readiness Standard 7.12 Measurement and data. The student applies mathematical process standards to use statistical representations to analyze data. The student is expected to:

(A) compare two groups of numeric data using comparative dot plots or box plots by comparing their shapes, centers, and spreads 

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