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ex14.18
data(ex14.18)
Rate.per.day
<100< code=""> .100-below .150 .150-below .200 .200-below .250 .250 or more100<>
.100-below .150
.150-below .200
.200-below .250
.250 or more
Frequency
data(ex14.18) str(ex14.18)
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