UPSKILL MATH PLUS
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Learn moreThe mean of following frequency distribution is \(50\), but the frequencies \(f_1\) and \(f_2\) in classes \((20–40)\) and \((60–80)\) respectively are not known. Find these frequencies, if the sum of all the frequencies is \(120\).
| Class | Frequency |
| \(0-20\) | \(17\) |
| \(20-0\) | \(f_1\) |
| \(40-60\) | \(32\) |
| \(60-80\) | \(f_2\) |
| \(80-100\) | \(19\) |
Answer:
The value of \(f_1\) is .
The value of \(f_1\) is .
[Note: Enter the answer in to two decimal number.]
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