A frequency polygon is drawn with classes of size 5. The class marks plotted are 12, 17, 22, 27. A student wrote the actual classes as 9.5-14.5, 14.5-19.5, 19.5-24.5, 24.5-29.5. Is this consistent with the class marks?

Question

Accepted Answer

Yes, each class mark equals the mid-point of the stated class. Mid-point of 9.5-14.5 = 12, of 14.5-19.5 = 17, etc., and each class width is 5, so it is consistent.

A frequency polygon is drawn with classes of size 5. The class marks plotted are 12, 17, 22, 27.
A student wrote the actual classes as 9.5-14.5, 14.5-19.5, 19.5-24.5, 24.5-29.5. Is this consistent with the class marks?

Step-by-Step Solution

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More Class 9 Frequency Polygons practice

A frequency polygon is drawn with classes of size 5. The class marks plotted are 12, 17, 22, 27.A student wrote the actual classes as 9.5-14.5, 14.5-19.5, 19.5-24.5, 24.5-29.5. Is this consistent with the class marks?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Frequency Polygons practice

A frequency polygon is drawn with classes of size 5. The class marks plotted are 12, 17, 22, 27.
A student wrote the actual classes as 9.5-14.5, 14.5-19.5, 19.5-24.5, 24.5-29.5. Is this consistent with the class marks?