Ms. Price

Statistics

This video is a quick review of box plots. Here is the video that is accompanied by the notes given in class. Examples are shown below. - Draw the box-and-whisker plot for the following data set:
- 77, 79, 80, 86, 87, 87, 94, 99
min: 77, Q1: 79.5, Q2: 86.5, Q3: 90.5, max: 99
- Draw a box-and-whisker plot for the following data set:
- 4.3, 5.1, 3.9, 4.5, 4.4, 4.9, 5.0, 4.7, 4.1, 4.6, 4.4, 4.3, 4.8, 4.4, 4.2, 4.5, 4.4
min: 3.9, Q1: 4.3, Q2:4.4 , Q3: 4.75, max: 5.1
- Go to STAT --> EDIT and input the data into one of the lists labeled L1. Once you have your data in a list, you will be able to tell the calculator to use that data.
- To make a box plot, remember that you need to go to 2nd --> STAT PLOT to get to the area where the graphs are for statistics.
- Turn the Plot ON, and select the type of plot you want (a box plot). Make sure that you click ENTER after selecting the type. Double-check that the XTYPE listed is the list where you put your data (L1).
- Now you want to see the graph for the box plot so click GRAPH.
- If you don't see a graph listed or you get an error, try the tips listed: Make sure there are no functions listed in the Y= section. Click ZOOM ---> ZOOMSTAT to tell the calculator to view statistics graphs. Any other errors, I will help you with.
Reviewed how to read a box plot as well. Practice here.
What is the highest score? What is the lowest score? What percent of people scored between a 73 and 90? What percent of people scored between an 81 and 90? What percent of people scored lower than an 81? What percent of people scored lower than a 54?
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