Construct a combined histogram and frequency polygon for the following frequency distribution:
Class-intervals | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 |
---|---|---|---|---|---|
Frequency | 3 | 5 | 6 | 4 | 2 |
Construct a frequency polygon for the following data:
Class-intervals | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 |
---|---|---|---|---|---|
Frequency | 5 | 8 | 12 | 9 | 4 |
The daily wages in a factory are distributed as follows:
Daily Wages | 125-175 | 175-225 | 225-275 | 275-325 | 325-375 |
---|---|---|---|---|---|
No. of workers | 4 | 20 | 22 | 10 | 6 |
Draw frequency polygons for each of the following frequency distribution;
(a) Using histogram
(b) Without using histogram
(i)
C.I | 10-30 | 30-50 | 50-70 | 70-90 | 90-110 | 110-130 | 130-150 |
---|---|---|---|---|---|---|---|
f | 4 | 7 | 5 | 9 | 5 | 6 | 4 |
(ii)
C.I | 5-15 | 15-25 | 25-35 | 35-45 | 45-55 | 55-65 |
---|---|---|---|---|---|---|
f | 8 | 16 | 18 | 14 | 8 | 2 |
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