Chi Square Test of Significance

X² equation

X²= ∑ (observed-expected) / expected

If X² is a low value or high value, what does it mean?

ow value for chi-square means there is little difference between what was observed and what would be expected.

X² equation

X²= ∑ (observed-expected) / expected

If X² is a low value or high value, what does it mean?

ow value for chi-square means there is little difference between what was observed and what would be expected.

Degrees of freedom

critical value

probability value

significance level

0.05

H0 and HA

In order to support the null, what is true about the probability value?

p>0.05

In order to support the null, what is true about the X² value?

In order to reject the null, what is true about the X² value?

X²<critical value at p=0.05

X²>critical value at significance level