lecture_9_12 - Analysis of two-way tables - Inference for...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
    Analysis of two-way tables Inference for two-way tables IPS chapter 9.12 © 2006 W.H. Freeman and Company
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Objectives (IPS chapter 9.1 and 9.2) Inference for two-way tables Hypothesis: no association Expected counts in two-way tables The chi-square test
Background image of page 2
What is a Two-Way Table? A two-way table shows the relationship between two categorical variables.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Two-way table for frequent binge drinking and gender: Row variable: Binge Drinking Column Variable: Gender Cell: Any combination of specific categories of the row and column variables. Gender Binge Drinker? Men Women Total Yes 1,630 1,684 3,314 No 5,550 8,232 13,782 Total 7,180 9,916 17,096
Background image of page 4
Successful firms Franchise businesses are sometimes given an exclusive territory by contract. This means that the new outlet will not have to compete with other outlets of the same chain within its own territory. How does the presence of an exclusive-territory clause in the contract relate to the survival of the business? A random sample of 170 new franchises recorded two categorical variables for each firm: (1) whether the firm was successful or not (based on economic criteria) and (2) whether or not the firm had an exclusive-territory contract.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
How does the presence of an exclusive-territory clause in the contract relate to the success of the business? To compare firms that have
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/03/2009 for the course PAM 2100 taught by Professor Abdus,s. during the Fall '08 term at Cornell University (Engineering School).

Page1 / 18

lecture_9_12 - Analysis of two-way tables - Inference for...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online