Question
Consider the frequency distribution of the given number
Value:1234Frequency:546f
If the mean is known to be 3, then the value of f is
Value:1234Frequency:546f
If the mean is known to be 3, then the value of f is
Answer: Option D
:
D
Mean=1×5+2×4+3×6+4×f15+f
i.e.,3=5+8+18+4f15+f⇒45+3f=31+4f
⇒45−31=f⇒f=14
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:
D
Mean=1×5+2×4+3×6+4×f15+f
i.e.,3=5+8+18+4f15+f⇒45+3f=31+4f
⇒45−31=f⇒f=14
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