Dear all,

Given data of a continuous frequency distribution with class intervals ..
how to enter such data so that we can use the normal mean, median and mode
functions to calculate them and also can draw histogram ..

for example how to enter this data in R

  Height range[image:
↓]<http://en.wikipedia.org/wiki/Frequency_distribution#> Number
of students[image: ↓]
<http://en.wikipedia.org/wiki/Frequency_distribution#> Cumulative
number[image: ↓] <http://en.wikipedia.org/wiki/Frequency_distribution#> 4.5–5.0
feet 25 25 5.0–5.5 feet 35 60 5.5–6 feet 20 80 6.0–6.5 feet 20 100

-- 
Arindam Fadikar
M.Stat
Indian Statistical Institute.
New Delhi, India

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