Copyright © by Holt, Rinehart and Winston. All Rights Reserved. Objectives Interpret stem-and-leaf plots, histograms, and box-and-whisker plots. Represent data with stem-and-leaf plots, histograms, and box-and-whisker plots. 4.6 Other Data Displays

Copyright © by Holt, Rinehart and Winston. All Rights Reserved. Glossary Terms stem-and-leaf plot – displays data by dividing each element into two parts, a stem and a leaf stems – the first part of each element leaves – the second part of each element histogram – a bar graph that has no space between the bars and shows the frequency of data box-and-whisker plot – shows how the data is distributed using the median, the upper and lower quartiles, and the largest and smallest element of the data upper quartile – the median of the top half of the data lower quartile – the median of the lower half of the data 4.6 Other Data Displays

Copyright © by Holt, Rinehart and Winston. All Rights Reserved. Rules and Properties 4.6 Other Data Displays Data Displays A stem-and-leaf plot displays data by dividing each element into two parts. 1.Record the first part of each element, the stem, in the left column. 2.Record the leaves in the right column. The leaves often represent the last digit of each element. Example 1 – page 202

Copyright © by Holt, Rinehart and Winston. All Rights Reserved. Rules and Properties 4.6 Other Data Displays Data Displays (Page 202) A histogram is a bar graphs that has no space between the bars and shows the frequency of data. 1.Categories are listed along the horizontal axis. 2.Frequencies of numbers in the data set are listed along the vertical axis.

Copyright © by Holt, Rinehart and Winston. All Rights Reserved. Rules and Properties 4.6 Other Data Displays Data Displays A box-and-whisker plot shows how data is distributed by using the median, upper and lower quartiles, and the greatest and least values in the data set. (Example 2 – page 203) 1.Draw a number line and identify the median and the greatest and least values with vertical lines.

Copyright © by Holt, Rinehart and Winston. All Rights Reserved. Rules and Properties 4.6 Other Data Displays Data Displays A box-and-whisker plot shows how data is distributed by using the median, upper and lower quartiles, and the greatest and least values in the data set. 2.Identify the lower quartile with a vertical line. The lower quartile is the median of all data in the lower half (below the median) of the data set.

Copyright © by Holt, Rinehart and Winston. All Rights Reserved. Rules and Properties 4.6 Other Data Displays Data Displays A box-and-whisker plot shows how data is distributed by using the median, upper and lower quartiles, and the greatest and least values in the data set. 3.Identify the upper quartile with a vertical line. The upper quartile is the median of all data in the upper half (above the median) of the data set.

Copyright © by Holt, Rinehart and Winston. All Rights Reserved. Rules and Properties 4.6 Other Data Displays Data Displays A box-and-whisker plot shows how data is distributed by using the median, upper and lower quartiles, and the greatest and least values in the data set. 4.Draw a rectangular box from the lower quartile to the upper quartile. 5.Draw lines from the ends of the box to the marks for the greatest and least values.

Copyright © by Holt, Rinehart and Winston. All Rights Reserved. Key Skills 4.6 Other Data Displays Use data to construct stem-and-leaf plots, histograms, and box-and-whisker plots. Ten students had the following test scores on a math test: 88, 78, 82, 95, 90, 91, 87, 76, 88, 89. Stem-and-leaf plot:StemsLeaves 76, 8 82, 7, 8, 8, 9 90, 1, 5

Copyright © by Holt, Rinehart and Winston. All Rights Reserved. Key Skills 4.6 Other Data Displays Use data to construct stem-and-leaf plots, histograms, and box-and-whisker plots. Ten students had the following test scores on a math test: 88, 78, 82, 95, 90, 91, 87, 76, 88, 89. Histogram:

Copyright © by Holt, Rinehart and Winston. All Rights Reserved. Key Skills 4.6 Other Data Displays Use data to construct stem-and-leaf plots, histograms, and box-and-whisker plots. Ten students had the following test scores on a math test: 88, 78, 82, 95, 90, 91, 87, 76, 88, 89. Box-and-whisker plot: TOC

Copyright © by Holt, Rinehart and Winston. All Rights Reserved. ASSIGNMENT Page 205 – 207 –#8 – 26 even,