The given histogram and frequency polygon shows the ages of teachers in a school. Answer the following:
(i) What is the class size of each class?
(ii) What is the class whose class mark is 48?
(iii) What is the class whose frequency is maximum?
(iv) Construct a frequency table for the given distribution.
Solution:
(i) The class size of each class is 6.
(ii) The class whose class mark is 48 is 45 – 51
= (45 + 51)/2
= 96/2
= 48
(iii) The class 51-57 has the maximum frequency i.e., 20.
(iv) Frequency table for the given distribution:
| Classes | 27-33 | 33-39 | 39-45 | 45-51 | 51-57 | 57-63 |
| Frequency | 4 | 12 | 18 | 6 | 20 | 8 |
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