Chi Square And Slope Of Least Square Line

Question 0

The sum of weighted differences/discrepancies is called…

Answer 0

Chi square χ^2

Question 1

Unless you have _____, you cannot use chi square methods

Answer 1

Counts

Question 2

Chi square formula

Answer 2

χ^2= Σ__(obs-exp)^2___

exp

Question 3

The smaller the resulting chi square value,….

Answer 3

The better the fit

Question 4

P-value of a chi square test

Answer 4

The probability of obtaining a chi square value as extreme as the one obtained if the Ho is assumed true

Question 5

If the chi square value is large enough….

Answer 5

(If the p-value is small enough) there is sufficient evidence to reject the Ho and claim that the fit is poor

Question 6

What happens to the chi square distribution as the df value increases?

Answer 6

It becomes closer to normal

Question 7

Tests of independent

Answer 7

Question whether two or more samples might reasonably have come from some larger set

Question 8

Df for two way chi square

Answer 8

Df= (rows-1)(columns-1)

Question 9

For two way chi square table/test for independence, even if there is sufficient evidence to reject the Ho of independent,..

Answer 9

We cannot necessarily claim Amy direct causal relationship

Although we can make a statement about some link or relationship between two variables, we are not justified in claimed that one causes another