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23 Cards in this Set
 Front
 Back
Bivariate Analysis
definition 
Used to test for differences between groups and to check for relationships between the variables


Chi Square
definition 
A statistical procedure determines whether the proportion of persons with some charateristic is the same for 1 group as for another.


When is Chi Square used?

When the DV is categorical
and it needs to be analyzed with a nominal independent variable 

If the Chi Square is small...
If the Chi Square is LARGE... 
Small = small insignficant, little to no association between variables
LARGE = signficant association between variables 

When the Chi Square is used to determine how the proportions of sample compare with the population you are doing a test called...

Goodness of Fit


Goodness of Fit helps researchers to determine what?

To determine whether to Reject or Retain H0 by stating whether the sample is signficantly different


Chi Square can be used with what kind of data?

Nominal and Ordinal


Chi Square can NOT be used with what data?

Intervallevel unless categories are created


You would use a p <.01 or p<.001 if...

It was important the results were trustworthy


You could use a p<1.0 if...

The sample is an exploratory study


Other names for a
Chi Square Table... 
1) CrossTabulation
2) Contingency Table 

Contingency Table
definition 
2x2
2 variables, each having 2 responses 

A Chi Square allows for what...

A researcher to have enormous flexibility and
Have no limit on the number of categories 

Problems with too many categories...

1) Can be difficult to identify patterns and summarize data
2)Makes Chi Square less accurate 

Phi

A statistic unaffected by sample size and measures between a nominal or ordinal


Phi can vary from  to and must be a _x_ table.

from 1 to 0 and be a 2x2


Contingency Coefficient
definition 
When you are measuring the strength of association in table that is larger than 2x2


Ground rule for Contingency Coefficient.

Can only be used when the number of rows is the same as the number of columns


Cramers V
definition 
Used to measure the strength of association with tables larger than 2x2 with different numbers of rows and columns


Cramers V will always equal what?

Will always equal Phi


Cramers V cannot be interpreted as what...

A proportion or perent of variation


Elaboration Model
definition 
Looking at data 1 variable at a time.
Introducing an independent variable. Then examining via a 3rd variable. 

Degrees of Freedom
definition 
how many cells were involved in the table
