What is the upper hinge?

false
false
B
false
C
true
D
false
F
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The upper hinge is the 75th percentile. It is the top of the box.
What is the median?

false
false
D
false
E
true
F
false
G
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The median is represented by a line through the middle of the box.
C is the

true
true
upper adjacent value
false
balance line
false
H-spread
false
outside line
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Upper adjacent value. It is the largest value below the upper inner fence which is one step above the upper hinge.
The H-spread is:

true
false
C-H
true
D-G
false
E-F
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The H-spread is the difference between the upper hinge (D) and the lower hinge (G).
Which of the following is/are true?

true
false
The median is higher than the mean.
false
There is one far out value.
true
The lowest value is H.
true
There is an outside value, but no far out value.
false
The highest value is C.
boxplotqa.gif
The lowest value is H. There is an outside value, but no far out value.
Box plots are preferable to stem and leaf displays when

true
true
there is a large amount of data.
false
it is important to show individual data values.
true
three or more groups are to be compared.
false
the distribution is skewed.
The two correct choices are (1) there is a large amount of data and (3) when more than two groups are compared. Stem and leaf displays show individual values and skew well.