True/False
Indicate whether the
statement is true or false.
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1.
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The first quartile is usually less than the third quartile.
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2.
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If a data set has n items then the position on the upper quartile is  .
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3.
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The inter-quartile range of {3, 5, 8, 8, 10} is 7.
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4.
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The “five-figure summary” means the median, quartiles, mean and
standard deviation.
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5.
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If we measure the heights of a group of people in cm, then the variance will be
measured in cm2.
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6.
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The standard deviation of {6, 6, 7, 9, 12} is about 2.28.
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7.
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The standard deviation is more sensitive to extreme values than the
inter-quartile range.
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8.
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The median is always larger than the mean.
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9.
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If a data set is symmetrical then we’d expect the mean, median and mode to
be about the same.
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10.
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If we choose the mean as our measure of location then we should use the variance
or standard deviation as our measure of spread.
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