Chi-Square Flashcards
1
Q
what is statistical significance?
A
likelihood that a relationship as big as one observed in a sample could be due to sampling error alone
2
Q
what is H0?
A
null hypothesis; states that there’s no relationship between the variables
3
Q
what is the relationship between significance level and chance of fluke?
A
higher significance level = lower chance of fluke
4
Q
which variables are appropriate for the chi-square test of independence?
A
nominal and ordinal
5
Q
what are degrees of freedom?
A
number of values in a calculated statistic that are free to vary
6
Q
what is a critical value?
A
it’s what the chi-square must exceed in order for the null hypothesis to be rejected
7
Q
what is a type 1 error?
A
rejecting a true H0
8
Q
what is a type 2 error?
A
accepting a false H0
