1.1 Missing value for Ungrouped data
1. Find Missing value given the Mean
2. Find Missing value given the Median
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The Mean of the observations `18,14,15,19,15,a,12,15,16` is `16`. Find missing frequency `a`
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1.2 Missing frequency for Grouped data
1. Grouped data
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1. Mean of the following distribution is 18.1. Find the 1 missing frequency.
| Class | 5 - 10 | 10 - 15 | 15 - 20 | 20 - 25 | 25 - 30 | 30 - 35 | | f | 11 | 20 | 35 | 20 | a | 6 |
2. The mean of a frequency distribution of 40 persons is 16.5. Find the 2 missing frequencies.
| Class | 0 - 5 | 5 - 10 | 10 - 15 | 15 - 20 | 20 - 25 | 25 - 30 | 30 - 35 | | f | 1 | 7 | 11 | ? | ? | 4 | 2 |
3. The median and mode of a frequency distribution of 230 person are 33.50 and 34 respectively. Find the 3 missing frequencies.
| Class | 0 - 10 | 10 - 20 | 20 - 30 | 30 - 40 | 40 - 50 | 50 - 60 | 60 - 70 | | f | 4 | 16 | ? | ? | ? | 6 | 4 |
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