how to construct smoothed ogive
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Answer:
➡️Method of Constructing on Ogive:
Step I: Prepare a frequency-distribution table with overlapping class intervals to make the distribution continuous.
Step II: Prepare the cumulative-frequency table for the distribution.
Step IV: Draw perpendicular to the horizontal axis at the points representing upper limits of the class intervals. The length of the perpendiculars should represent the cumulative frequencies of the corresponding class intervals. In other words, plot points with coordinates (a, c), where a = upper limit of a class interval and c = the corresponding cumulative frequency.
Step IV: Draw perpendicular to the horizontal axis at the points representing upper limits of the class intervals. The length of the perpendiculars should represent the cumulative frequencies of the corresponding class intervals. In other words, plot points with coordinates (a, c), where a = upper limit of a class interval and c = the corresponding cumulative frequency.Step V: Join the points plotted in step IV freehand to get a smooth curve.
Step IV: Draw perpendicular to the horizontal axis at the points representing upper limits of the class intervals. The length of the perpendiculars should represent the cumulative frequencies of the corresponding class intervals. In other words, plot points with coordinates (a, c), where a = upper limit of a class interval and c = the corresponding cumulative frequency.
Step V: Join the points plotted in step IV freehand to get a smooth curve.
Step VI: Join the first point to the point representing the lower limit of the first class interval in continuation with the smooth curve in step V. (This part of the curve may be a dotted line segment.)
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