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Question
Explain the meaning of the term Class limits.
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Solution
Class limits: Each class is bounded by two figures, called the class limits. The figures
on the left side of the classes are called lower limits while figures on the right side are
called upper limits.
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The times, in seconds, taken by 150 athletes to run a 110 m hurdle race are tabulated below:
| Class | 13.8 – 14 | 14 – 14.2 | 14.2 – 14.4 | 14.4 – 14.6 | 14.6 – 14.8 | 14.8 – 15.0 |
| Frequency | 2 | 4 | 5 | 71 | 48 | 20 |
The number of athletes who completed the race in less than 14.6 seconds is:
Class mark of a class is obtained by using ______.
