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Module 7 Vocabulary Review for Final 41524
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What is a Confidence Interval?
 
All of the above
 
Range of values likely to Include parameter of interest
 
Provides a specified level of confidence for an estimate
 
95% confidence interval, means 95 out of 100 times
What is a cluster sample?
 
Sampling technique where population is divided into clusters
 
A sample from a non-normal distribution
 
Samples from various populations
 
A very large sample size
True or False: A Chi-square test assesses the differences between two categorical variables?
True
True or False: A variable is a factor that is liable to vary or change?
True
What does correlation between two variables mean?
 
The Extent to which 2 or more variable fluctuate together
 
Two variables that can take on the same value
 
A variable that is continuous
 
None of the answers
For comparing the means of two separate groups, which is the best test?
 
Independent T-test
 
ANOVA
 
Chi-squared
 
Regression
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
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 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
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