Find unknown frequency in the table given below-Whe5 - 51110 - 7 115 - - 120 - 10 125 - 8 130 - 6 IMhline - sum f -50 wlhlineend array

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Standard XI

Statistics

Frequency Array

Find unknown ...

Question

Find unknown frequency in the table given below.

$\begin{matrix} X & Frequency (f) 5 & 5 10 & 7 15 & ? 20 & 10 25 & 8 30 & 6 \sum f = 50 \end{matrix}$

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Solution

To find the unknown frequency, subtract the sum of known frequencies from sum of total frequencies.

$\sum f = 50$

Sum of Known Frequency = 5 + 7 + 10 + 8 + 6 = 36

Unknown Frequency = Total Frequency - Sum of Known Frequencies

= 50 - 36 = 14

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Find unknown frequency in the table given below. XFrequency (f)5510715?2010258306∑f=50

To find the unknown frequency, subtract the sum of known frequencies from sum of total frequencies. ∑f=50 Sum of Known Frequency = 5 + 7 + 10 + 8 + 6 = 36 Unknown Frequency = Total Frequency - Sum of Known Frequencies = 50 - 36 = 14

Find unknown frequency in the table given below.

$\begin{matrix} X & Frequency (f) 5 & 5 10 & 7 15 & ? 20 & 10 25 & 8 30 & 6 \sum f = 50 \end{matrix}$

To find the unknown frequency, subtract the sum of known frequencies from sum of total frequencies.

$\sum f = 50$

Sum of Known Frequency = 5 + 7 + 10 + 8 + 6 = 36

Unknown Frequency = Total Frequency - Sum of Known Frequencies

= 50 - 36 = 14