True/False
Indicate whether the
statement is true or false.
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1.
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A person’s country of birth is best represented as an ordinal categorical
variable.
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2.
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A soldier’s rank (private, sergeant, general, etc) is best represented as
an ordinal categorical variable.
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3.
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The number of shoes a person owns is best represented as a discrete numerical
variable.
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4.
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A company’s records show that 28% of the male employees and 23% of the
female employees are part-time workers. The overall percentage of part-time workers is therefore
51%.
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5.
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A zoo has 13 penguins, 6 tigers and an elephant. 65% of the animals are
penguins.
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6.
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In a cross-tabulation the sum of the row totals must be equal to the sum of the
column totals.
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7.
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A stem and leaf plot is a good way to represent categorical data.
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8.
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If we want to categorise people’s ages, a good choice of classes is 10-20,
20-30, 30-40, etc.
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9.
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In a bar chart with vertical bars the height of a bar is proportional to the
frequency.
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10.
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In a histogram the axis must always start from 0.
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