What is the chi-square formula?
(O-E)2/E
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How do you find the degrees of freedom in a goodness of fit?
n-1
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If r is .972 then r is...
Strong, positive, and linear
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What is the null hypothesis of a goodness of fit?
population proportion=hypothesis proportion
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What is your p-value if your chi-square equals 158.84?
Between .05 and .10
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The correlation coefficient is affected when the two variables are interchangeable.
False
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All expected counts at least one.
True
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What is your degrees of freedom if you have 18 rows and 4 columns?
51
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If the p-value>alpha then...
don't reject Ho, not statistically significant
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How do you find the degrees of freedom for chi-square distribution?
(rows-1)(columns-1)
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What is the sample method for a chi-square?
SRS
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What are the conditions for Chi-Square?
1. All expected counts are at least 1.
2. No more than 20% of expected counts <5. |
No more than 60 percent of expected counts are chi-square.
false
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The correlation coefficient gives a measure of linear association of two variables.
True
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If the p-value
reject Ho, statistically significant
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