Flashcards
AGEE 644 Class 7 - Chi-Square (effect size)
Flashcards do conjunto (13)
- 1When dealing with nominal data, the most widely used tests of significance is the _______________Chi Square Test
- 2The chi square tests compared _____frequencies with _______ frequenciesObserved, expected
- 3For chi-square, the null hypothesis is ..HO: The variables _____ and ______ are independent
- 4One variable Chi Square Degrees of Freedom is (formula)K-1
(K= number of categories) - 5What is the formula for chi square?X2=(O-e)2/e
(O-observed frequency in a cell)
(e= expected frequency in a cell) - 6The purpose of a two-variable chi square test is to determined whether or not the two variables in the design areIndependent of one another
- 7For a two variable chi square (test of independence), the df is (formula)df = (C-1) (r-1)
(c=number of columns)
r = number of rows - 8What are three assumptions of chi square?1) Observations must be independent (random and independently selected)
2) Categories must be mutually exclusive
3) Observations are measured as frequencies - 9Computing the difference among observations that would be likely to arise by chance alone is called theError Term
- 10For a chi square test, the research hypothesis is..H1: The is an association between _____ and ______ .
- 11For chi Square, to calculate the expected frequency in a row, e=e= total frequency for row/total sample size x (total frequency for column)
- 12There are restrictions concerning sample size for chi square... dont need to know for testBut will for dissertation!
- 13To calculate an effect size for Chi square, W=W=Square root of x2/N
Informações
- Descrição
- AGEE 644 FlashCards sobre AGEE 644 Class 7 - Chi-Square (effect size), criado por Renee Conneway em 20-04-2018.
- Criado por
- Renee Conneway
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