Histogram

         Use data from #4 section 2.2 notes
              •  use class boundaries for marks along bottom
          (on TI-83 may use lower limits as Xmin and "next lower limit" after last class as Xmax, and class width as Xscl)
 
          Label clearly
 
 

         Using Calculator
 
 

         Relative frequency Histogram has % instead of frequency along vertical
 
 
 

STEM AND LEAF
 

         Using Graph Paper helps
 
 

         Do #10, pg. 112
 
 
 
 
 
 
 
 

         NOTE:  Examine sidewise and see histogram
 
 
 

         If very long might break off ends and also condense - pg. 50
           (I don't like representation pg. 51)
 
 
 

Dot Plots
 

         Similar to histogram -
 
 

          pg. 70  -  Do  #1
 
 
 

Pareto Chart

         arranged in decreasing frequency

         Do #16

Pie Chart

         Make a table with column of %, then Degrees (% of 360 degrees)

         #14
 

Job Sources	Frequency	Relative Frequency	Degrees in Circle
Help-wanted Ads	56
Exec. Search Firms	44
Networking	280
Mass mailing	20

 
 

Scatter Diagrams  -  we'll do later in chapter 9