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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
True or False: The Null Hypothesis is a statement there is no significant difference or effect in the research observations.
True
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