Page 108 - DCOM203_DMGT204_QUANTITATIVE_TECHNIQUES_I

Unit 6: Measures of Central Tendency

Solution: Notes
To draw ogives, we need to have a cumulative frequency distribution.
Class Intervals Frequency Less than c. f . More than c. f .
0 - 500 12 12 230
500 -1000 18 30 218
1000 -1500 35 65 200
1500 - 2000 42 107 165
2000 - 2500 50 157 123
2500 - 3000 45 202 73
3000 - 3500 20 222 28
3500 - 4000 8 230 8
1. Using the less than type ogive

Less than Type Ogive

N
The value = 115 is marked on the vertical axis and a horizontal line is drawn from this
2
point to meet the ogive at point S. Drop a perpendicular from S. The point at which this
meets X- axis is the median.

2. Using both types of ogives

Both Types of Ogives

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