Concept explainers
a.
Identify the cases of the study.
Find the
b.
Find the variables in the given dataset.
Check whether each variable is quantitative or categorical.
c.
Calculate the mean and standard deviations of tip percentage.
Find the five-number summary.
Find the boundary points that classify an observation as an outlier relative to this dataset.
d.
Construct a histogram for the variable PctTip and explain about shape of the distribution.
e.
Construct a two-way table of Credit and Day.
Find the proportion of bills paid with a credit card on Thursday and Friday.
Check whether there is an association between the payment method, and whether it is Thursday or Friday.
f.
Identify the type of graph that explains the relationship between PctTip and Server.
Construct the appropriate graph.
Identify the server that seems to have the highest percent tips.
g.
Find the response and explanatory variables.
Construct a scatterplot.
Check whether there are any outliers in the scatterplot.
Identify the relationship between the two variables by ignoring the outliers.
h.
Calculate the
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Statistics, Binder Ready Version: Unlocking the Power of Data
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