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how to find less than time & more than time in statistics in a grouped data?

Asked by Abhijeet abhijeet 29th September 2013, 2:42 PM
Answered by Expert
Answer:
Consider the following distribution:
C.I.        f
0-10      2
10-20    5
20-30    8
30-40    5
 
Now, the less than distribution can be obtained as follows:
 
C.I. (upper limit)           f(c.f) = cumulative frequency
Less than 10                 2
Less than 20                 5+2 = 7
Less than 30                 8+5+2 = 15
Less than 40                 8+5+2+5 = 20
 
 
The more than distribution can be obtained as follows:
 
C.I. (Lower limit)           f(c.f) = cumulative frequency
More than 0                  8+5+2+5 = 20
More than 10                20 - 2 = 18
More than 20                18 - 5 = 13
More than 30                13 - 8 = 5
Answered by Expert 29th September 2013, 11:15 PM
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