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

EQ: How do we find percentages from contingency tables? CH. 3 Day 2 AP 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 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

203 118 212 711 122 167 528 673 285 706 2201 Titanic Data First Class Second Class Third Class Fourth Class Total Alive 203 118 212 711 Dead 122 167 528 673 285 706 2201

What percent of the Titanic passengers were in First Class? What percent of Titanic passengers died? What percent of Third Class passengers survived? What percent of people who died were from Fourth class? Find the marginal distribution of class.

Work Force at a Corporation Age/Ethnicity White Black Hispanic Total 24 and younger 2192 6496 2362 25-49 18200 46614 16726 50 and older 2690 4430 1710 Totals

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/CW Rules: 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.

Homework P. 36-44 # 18, 19, 21, 26, 32