5.1 Categorical Data 

Learning Target 5.1  I understand how to choose, construct, and  interpret an appropriate data display for  categorical data and can tell when displays  are misleading or distorted. Today: Categorical Data

5.1 Categorical Data Level 1/2 FindingthePercentChange:

PercentChange=

5.1 Categorical Data 

Level 1 Example#1:Alexboughtagallonofmilkfor $2.19lastweek.Thisweek,hepaid$2.38.What isthepercentchangefromlastweektothis week?

Level 1 Example#2:YourfavoritesongoniTunescosts $1.29.Butwhenyougotopay,theyonlycharge you$0.99.Whatisthepercentchangefromthe originaltothepriceyoupaid?

5.1 Categorical Data 

Level 2/3 Example#3:Whatpercentmoreofpassing studentsdoyouhavefrom2011 comparedto 2012? # of students  passing

Year

to Use first blank as denominator

compared to Use last blank as denominator

5.1 Categorical Data 

5.1 Categorical Data Level 1 What percent of  M&M's are the  color green?

M&M Color

Number

Red Blue Yellow Green Brown Orange Total

15 10 6 12 8 7 58

What percent of  M&M's are the  color blue?

5.1 Categorical Data There are 75 M&M's in the bag.  Level 1 1. How many M&M's are red?

2. How many M&M's are yellow?

5.1 Categorical Data 

Level 2/3 What is wrong with these displays?

Level 2/3 Things to look for in data displays:

­pie charts add up to 100% ­axis labels ­titles ­total number of data within diagram

5.1 Categorical Data

I understand how to choose, construct, and interpret an appropriate data display for categorical data and can tell when displays are misleading or distorted.

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