Interquartile+Range+Part+II

**__Interquartile Range Part II__** Here are some interesting statistics about social community sites to view as a class. media type="youtube" key="6ojDojj3TsI" height="345" width="420" align="center"

Open this file with the notes for today's lesson and then save the file to your laptop. ﻿ 

Attempt these questions after going through the notes. ﻿1. The scores of 32 students have been used to graph this cumulative frequency histogram and polygon. Use the graph to find the median, the lower quartile, the upper quartile and the interquartile range.  2. The same 32 students sat for a second test. The results have been used to draw this graph. Use the graph to find the median, the lower quartile, the upper quartile and the interquartile range (some answers will involve decimals).  3. Use the cumulative frequency polygons to find the interquartile range of each set of scores. ﻿  ﻿Now try the activity from the website below. Frequency Diagrams <span style="display: block; font-family: 'Comic Sans MS',cursive; font-size: 150%; text-align: center;"> Here is an extension question for fast finishers. <span style="display: block; font-family: 'Comic Sans MS',cursive; font-size: 150%; text-align: left;">﻿<span style="color: #008000; font-family: 'Comic Sans MS',cursive;">4. Use a cumulative frequency polygon to find the interquartile range for each of the following. <span style="color: #008000; display: block; font-family: 'Comic Sans MS',cursive; font-size: 150%; text-align: left;">