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23 Cards in this Set
- Front
- Back
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Bivariate Analysis
-definition |
Used to test for differences between groups and to check for relationships between the variables
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Chi Square
-definition- |
A statistical procedure determines whether the proportion of persons with some charateristic is the same for 1 group as for another.
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When is Chi Square used?
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When the DV is categorical
and it needs to be analyzed with a nominal independent variable |
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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 |
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When the Chi Square is used to determine how the proportions of sample compare with the population you are doing a test called...
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Goodness of Fit
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Goodness of Fit helps researchers to determine what?
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To determine whether to Reject or Retain H0 by stating whether the sample is signficantly different
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Chi Square can be used with what kind of data?
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Nominal and Ordinal
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Chi Square can NOT be used with what data?
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Interval-level unless categories are created
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You would use a p <.01 or p<.001 if...
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It was important the results were trustworthy
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You could use a p<1.0 if...
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The sample is an exploratory study
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Other names for a
Chi Square Table... |
1) Cross-Tabulation
2) Contingency Table |
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Contingency Table
-definition- |
2x2
2 variables, each having 2 responses |
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A Chi Square allows for what...
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A researcher to have enormous flexibility and
Have no limit on the number of categories |
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Problems with too many categories...
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1) Can be difficult to identify patterns and summarize data
2)Makes Chi Square less accurate |
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Phi
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A statistic unaffected by sample size and measures between a nominal or ordinal
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Phi can vary from -- to-- and must be a _x_ table.
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from 1 to 0 and be a 2x2
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Contingency Coefficient
-definition- |
When you are measuring the strength of association in table that is larger than 2x2
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Ground rule for Contingency Coefficient.
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Can only be used when the number of rows is the same as the number of columns
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Cramers V
-definition- |
Used to measure the strength of association with tables larger than 2x2 with different numbers of rows and columns
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Cramers V will always equal what?
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Will always equal Phi
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Cramers V cannot be interpreted as what...
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A proportion or perent of variation
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Elaboration Model
-definition- |
Looking at data 1 variable at a time.
Introducing an independent variable. Then examining via a 3rd variable. |
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Degrees of Freedom
-definition- |
how many cells were involved in the table
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