CHI_SQUARE

# CHI_SQUARE - X2 =(O – E)2 E 5 O = observed frequency E =...

This preview shows pages 1–9. Sign up to view the full content.

04/26/11 1 CHI SQUARE Myril Hillman, Ph.D.

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

View Full Document
04/26/11 2 Chi Square: Test of Independence: Is there a significant difference between “expected” and “observed” frequencies?
04/26/11 3 Assumptions Random samples (big R) Not normal curve distribution Variables are qualitative Nominal/ordinal data: counts Frequencies (counts) in cells greater than 5

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

View Full Document
04/26/11 4 How to do it: formula Chi square: (observed –expected) squared divided by expected

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

View Full Document

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: X2 = (O – E)2 E 04/26/11 5 O = observed frequency E = expected frequency 04/26/11 6 Example Time urgency completing task for men vs. women 04/26/11 7 Degrees of Freedom (#Rows –1)(#Columns – 1) 04/26/11 8 Choose alpha level 04/26/11 9 Look up What critical value of chi square did you need. Is your chi square as big or bigger? If so, it is significant...
View Full Document

{[ snackBarMessage ]}

### Page1 / 9

CHI_SQUARE - X2 =(O – E)2 E 5 O = observed frequency E =...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online