A. The difference between upper and lower class limits
B. The frequency of the modal class
C. The midpoint of a class interval
D. The number of classes in the distribution
Answer: Option A
Solution (By JKSSB Mock Tests)
Class width (or class size) is the difference between the upper and lower boundaries of a class interval, determining the range of values grouped together in a frequency distribution.
Explanation:
Civil registration systems continuously record vital events (births, deaths, marriages) at the local level, providing the most timely and comprehensive source for vital statistics when well-functioning.
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