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Using a graph sheet draw a frequency polygon data class: 25-35 , 35-45,45-55,55-65,65-75,75-85frequency 5,8,12,9,6,4 |
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Answer» To Find :Frequency Polygon. Solution :For DRAWING a frequency polygon we need to find thewhere, Upper Limit = 35Lower Limit = 25where, Upper Limit = 45Lower Limit = 35where, Upper Limit = 55Lower Limit = 45where, Upper Limit = 65Lower Limit = 55where, Upper Limit = 75Lower Limit = 65where, Upper Limit = 85Lower Limit = 75We got all the MID values.Now, plotting the points (30, 5), (40, 8), (50, 8), (60, 9), (70, 6), (80, 4). Join the plotted points by line segments. The end points (30, 5) and (80, 4) are joined to the mid points (15 – 25) and (85 – 95) respectively with frequency zero. At the very beginning of the x-axis we have to add a kink because the frequency STARTS from (25 – 35).Hence, The frequency polygon for the above data is given in the attachment. |
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