Embed Size (px)
DESCRIPTION
Warm Up- CW Grade. Use the information in the table (from yesterday) to: Make a Relative Frequency Table Make a Relative Frequency Bar Graph Make a Pie Chart. HW Questions. Textbook p. 16-18 # 2, 12, 22, 25, 26. Answer Key. Answer Key. Contingency Tables. CH. 3 Day 2 AP Statistics - PowerPoint PPT Presentation
Citation preview
58.5West93.1South62.1Midwest51.6NortheastPopulation(in millions)Region
Warm Up- CW GradeUse the information in the table (from yesterday) to:1) Make a Relative Frequency Table2) Make a Relative Frequency Bar Graph3) Make a Pie Chart
HW QuestionsTextbook p. 16-18 # 2, 12, 22, 25, 26
Answer Key
Answer Key
Contingency TablesCH. 3 Day 2AP Statistics
EQ: How do we find percentages from contingency tables?
Contingency Tables• Tables that show how the individuals are
distributed along each variable• The frequency distribution for a two-way statistical
classification.
–Ex.
Types Distributions found in Contingency Table
Type Definition Basically
Marginal distributions
a frequency distribution of one of the variables in a
contingency table
Conditional distributions
shows the distribution of one variable for just the individuals who satisfy
some condition on another variable
Titanic DataFirst Class
Second Class
Third Class
Fourth Class
Total
Alive 203 118 212 711
Dead 122 167 528 673
Total 285 706 2201
1. What percent of the Titanic passengers were in First Class?
2. What percent of Titanic passengers died?
3. What percent of Third Class passengers survived?
4. What percent of people who died were from Fourth class?
5. Find the marginal distribution of class.
Age/Ethnicity White Black Hispanic Total24 and younger 2192 6496 2362
25-49 18200 46614 16726
50 and older 2690 4430 1710
Totals
Work Force at a Corporation
1. What proportion of people ages 25-49 are black?
2. What proportion of white people are 24 or younger?
3. Compute the following percentages: • Hispanic people• Hispanic people given they are 50 or older• Hispanic people given they are 25-49• Hispanic people given they are <24
Summarizing/CWRules:
Number your paper #1-10.Pick a spot to begin at, Ignore the answer at the top of that page, Instead look at the question in small print. Answer the Question and write it in as #1. Look for the Answer at the top of another page posted somewhere around the room. Go to that page. Your next question is the small print on that page. Repeat process until you get back to the page you started
at.
You must go in order to receive credit- Turn in When finished.
HomeworkP. 36-44 # 18, 19, 21, 26, 32
