The frequency distribution of descrete frequency distribution is as follows :(Variable (xi) - Frequency)
0 - 92
1 - 40
2 - _____
3 - 36
4 - 32
5 - 20If the mean is 1.744, then find the missing frequency.
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Missing frequency is 81.
Step-by-step explanation:
The summation of frequency will be calculated as 220+f, if we take the missing frequency to be f.
Again, the sumation of frequency and variable will be found to be 376+2f.
Now, to find the value of the mean to be summation of fixi divided by summation of fi. Which will be (376+2f)/(220+f) which will be equal to 1.744.
On calculating the value of the f will be found to be approximately 81.
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