The population is the entire set of subjects of interest in any study, and a sample is a portion or subset of the population.
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Q2: When both variables are categorical, the t-test
Q3: When both variables are continuous, the χ2
Q4: When both variables are continuous, simple regression
Q5: Multivariate statistics involve statistics for three or
Q6: It is practical to survey the entire
Q8: Statistical inference is about drawing conclusions about
Q9: The best way to draw a sample
Q10: We use population parameters to estimate unknown
Q11: The estimation error is the difference between
Q12: A confidence interval is defined the range
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