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Question
Using the following frequency table.
| Marks (obtained out of 10) | 4 | 5 | 7 | 8 | 9 | 10 |
| Frequency | 5 | 10 | 8 | 6 | 12 | 9 |
The frequency of more than 8 marks is 21.
Options
True
False
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Solution
This statement is True.
Explanation:
Frequency of marks 9 = 12
Frequency of marks 10 = 9
⇒ Frequency of marks more than 8 = 12 + 9
⇒ Frequency of marks more than 8 = 21
Therefore, the frequency of more than 8 marks is 21.
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| Frequency | 5 | 10 | 8 | 6 | 12 | 9 |
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| Weights (in kg.) |
Tally Marks | Frequency (Number of persons) |
| 40 – 50 | `\cancel(bb|bb|bb|bb|) \cancel(bb|bb|bb|bb|) bb|bb|` | |
| 50 – 60 | `\cancel(bb|bb|bb|bb|) \cancel(bb|bb|bb|bb|) bb|bb|bb|bb|` | |
| 60 – 70 | `\cancel(bb|bb|bb|bb|) bb|` | |
| 70 – 80 | `bb|bb|` | |
| 80 – 90 | `bb|` |
Find the total number of persons whose weights are given in the above table.
