Data on tipping percent for 20 restaurant tables are:
1.The median tipping percentage is 20.
2.The median tipping percentage is 22.
3.The median tipping percentage is 22.5.
4.The median tipping percentage is 23.5.
5.The median tipping percentage is 28.2.
Q. 2The table below summarizes the number of minutes spent exercising each day for a sample of 30 female college students.
Q. 3
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Construct a graphical display of the
data distribution and then indicate
what summary measures you would
use to describe center and spread.
1.center = mean; spread = standard deviation
2.center = mean; spread = interquartile range
3.center = median; spread = standard deviation
4.center = median; spread = interquartile range
5.center = mode; spread = range"
Q. 4If there are no outliers, a skeletal and modified boxplot can differ in the length of the box, but not in the whisker lengths.
1.True
2.False
Q. 5By definition, an outlier is extreme if it is more than 3.0 iqr away from the closest quartile.
1.True
2.False
Q. 6The interquartile range is resistant to the effect of outliers.
1.True
2.False
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