The tool that provides useful information about a data set by breaking it down into subpopulations is the:
A) histogram
B) scatterplot
C) pivot table
D) spreadsheet
Correct Answer:
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Q4: Generally speaking,if two variables are unrelated (as
Q5: Example of comparison problems include
A)Salary broken down
Q6: The most common data format is
A)Long
B)Short
C)Stacked
D)Unstacked
Q7: Scatterplots are also referred to as
A)Crosstabs
B)Contingency charts
C)X-Y
Q9: If Cov(X,Y)= - 16.0,variance of X =
Q10: A useful way of comparing the distribution
Q11: To examine relationships between two categorical variables,we
Q12: The correlation is best interpreted
A)By itself
B)Along with
Q13: A scatterplot allows one to see:
A)whether there
Q22: We are usually on the lookout for
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