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प्रश्न
Why are two neighbouring zero-frequency classes added when constructing a frequency polygon without a histogram?
विकल्प
To make the histogram taller.
To close the polygon at both ends.
To calculate cumulative frequencies.
To make the class intervals equal.
MCQ
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उत्तर
Adding zero-frequency classes at the beginning and end allows the polygon to start and end on the x-axis, closing the figure.
shaalaa.com
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