STATISTICAL TECHNIQUES AND TOOLS
MEASURE OF ARITHMETIC MEAN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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FREQUENCY CURVE
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FREQUENCY POLYGON
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OGIVE
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None of the above
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Detailed explanation-1: -A frequency polygon, not a frequency curve, is drawn by joining the midpoints of all the top edges of the rectangles in a histogram by straight lines. A frequency curve is meant to be an approximate reflection of the frequency polygon and is drawn using curvy and wavy lines unlike that of a frequency polygon.
Detailed explanation-2: -A frequency polygon is a closed figure that is formed by joining the top midpoints of all the rectangles of histograms using a straight line. Whereas frequency curve is a curve that is obtained by joining the top midpoints of all rectangles of a histogram using a free hand.
Detailed explanation-3: -The graphical representation of a cumulative frequency table is called an ogive whereas a histogram is a graphical representation of a grouped frequency distribution.