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Module 6 Statistics Review Quiz April 9 2024
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For comparing the means of two separate groups, which is the best test?
 
Independent T-test
 
ANOVA
 
Chi-squared
 
Regression
True or False. The divisor for the standard deviation of a sample is n-1?
True
True or False: Sigma represents the standard deviation of a population?
True
Since p (.04) < a (.05), p < α, do we accept or reject the null hypothesis?
We reject the null hypothesis
True or False. When p > α, you should fail to reject the Null hypothesis.
True
True or False: The p-value is a proportion. If your p-value is 0.05, it means that 5% of the time, you would observe a test statistic at least as extreme as the one you found if the null hypothesis were true.
True
What does a p-value represent in statistical tests?
 
The probability of the obtained results when null is true
 
A significance level
 
The sample mean
 
The variance in the sample population
What are levels of measurement?
 
A classification that describes the nature of information
 
Only describes ordinal variables
 
Only describes interval variables
 
Only describes nominal variables
What is a Parameter?
 
A numerical characteristic of a population
 
A sample Statistic
 
A value below which a given percentage of observations fall
 
A value that divides a list of numbers into quarters
What is an interval level of measurement?
 
Measurement where values between variables has meaning
 
Variable Data can only be categorized
 
Variable Data can only be ranked
 
None of the above
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