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#### Shaalaa.com | Statistics part 14 (Graphical Representation Cumulative Frequency)

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#### Related QuestionsVIEW ALL [4]

Prepare the cumulative frequency (less than types) table from the following distribution table :

Class |
0-10 | 10-20 | 20-30 | 30-40 | 40-50 |

Frequency |
2 | 3 | 7 | 8 | 5 |

The following is the frequency distribution with unknown frequencies :

Class | 60-70 | 70-80 | 80-90 | 90-100 | Total |

frequency | `"a"/2` | `(3"a")/2` | 2a | a | 50 |

Find the value of a, hence find the frequencies. Draw a histogram and frequency polygon on the same coordinate system.