Mathematics
If the class intervals 40 - 44, 45 - 49, 50 - 54 etc. in a frequency table are converted into continuous form, they become
40 - 45, 45 - 50, 50 - 55, etc
39 - 44, 44 - 49, 49 - 54, etc
39.5 - 44.5, 44.5 - 49.5, 49.5 - 54.5, etc
any of the above
Statistics
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Answer
The above frequency distribution is discontinuous, to convert it into continuous frequency distribution,
Subtract the adjustment factor (0.5) from all the lower limits and add the adjustment factor (0.5) to all the upper limits.
The continuous frequency distribution is:
39.5 - 44.5, 44.5 - 49.5, 49.5 - 54.5, etc.
Hence option 3 is the correct option.
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