AIM: How can we make line and box plots?
HW: Box-and-Whisker Worksheet 2 (found below)
Draw a box plot for the following data.
5, 2.5, 6, 8, 9, 2, 1, 4, 6.2, 18, 7
Students used box plots to analyze and make comparative statements about different data sets. Students investigated the concept of "percentiles" and how to find them in a data set.
Data is facts and statistics collected together for reference or analysis. When presented as a list, data can be difficult to understand. We looked at two different ways to organize and display data so that it is easier to read, interpret, and understand.
The first display is a line plot. Line plots are number lines with "X" or circles above numerical values to show the frequency of data values. The second display type is a box-and-whisker plot. This is also known as a five-point summary because it is uses the least value, first quartile, median, third quartile, and greatest value. The power of a box plot is that is gives us the highlights of a data set so that we may interpret it quickly. More on box plots below.