STATISTICS UNLOCKING THE POWER OF DATA UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS FULL SOLUTION STUDY GUIDE

STATISTICS UNLOCKING THE POWER OF
DATA UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS FULL SOLUTION
STUDY GUIDE

●● Variable
Answer: A characteristic that corresponds to each case in a dataset is
known as a _______


●● Dataset
Answer: Usually data is stored and presented in a _________ where
each row represents one case, and each column represents one variable.


●● Categorical Variable
Answer: A ___________ ____________ divides the cases into groups,
placing each case into exactly one of two or more categories.


●● Quantitative variable
Answer: A ___________ ___________ measures or records a numerical
quantity for each case.


●● Explanatory variable - Response variable

, Answer: If we are using one variable to help us understand or predict
values of another variable, we call the former the _____ _____ and the
latter the _____ ______


●● Population
Answer: A _______ includes all individuals or objects of interest.


●● Sample
Answer: A _____ is comprised of all of the cases in which we have
collected data. A _____ (same term) is a subset of the population.


●● Statistical inference
Answer: _____ _____ is the process of using data from a sample to gain
information about the population.


●● Sampling Bias
Answer: _____ _____ occurs when the method of selecting a sample
causes the sample to differ from the population in some relevant way. If
_____ _____ (same term) exists, we cannot trust generalizations from
the sample to the population.


●● Random Samples