Term

Definition


Term

Definition
A test used to evaluate how closely observed results fit expectations. 


Term
procedure for doing a chisquare test 

Definition
1: State a null hypothesis (H_{0}).
2: Calculate your test statistic (X^{2}).
3: Degrees of freedom (df).
4: Statistical significance (p). 


Term

Definition
states that the observed results will be the same as the expected results
needs to be tested 


Term
how to calculate the test statistic (X^{2}) 

Definition


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Definition


Term
Statistical significance (p). 

Definition
the probability, p of obtaining the observed results if the null hypothesis is true 


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A generally accepted p for acceptance or rejection of a hypothesis 

Definition


Term
alternative hypothesis (H_{A}) 

Definition
hypothesis that states that there is a difference between observed and expected 


Term
when to accept the null hypothesis 

Definition
when X^{2} is within the range on the table for the degree of freedom 


Term
when to reject the null hypothesis 

Definition
when X^{2} is not within the range on the table for the degree of freedom 


Term

Definition
basically a table that shows relationship between two events 


Term
The Null Hypothesis for a contingency table 

Definition
to test whether the frequencies of observations in the rows are independent of the frequencies of the observations in the columns. 


Term
example of a contingency table 

Definition


Term
how to calculate expected numbers in a contingency table 

Definition
here's an example:
(# of males / total population) * (# of specific variable) = expected number for that variable
(# of females / total population) * (# of specific variable) = expected number for that variable 


Term
how to calculate d.f. in a contingency table 

Definition
(# of R's  1) * (# of C's  1) = d.f. 

