Compute the mean from the frequency table. Marks
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Compute the mean from the frequency table. Marks
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[tex]\bf\large\red{\underline{\underline{Solution}}}:[/tex]
[tex]\begin{array}{ c || c | c | c || } & \bf \red{Marks (x)} &\bf{No. \;of \;students (f)} & \;\bf{fx} \\ &70 & 3 & 210 \\ &50 & 5 &250 \\ &60&4&240\\& 52&7& 364\\ &65&6& 390\\ &65&2& 130\\ &68 & 3& 204\\ & & \sum \bf f =30 & \sum \bf fx =1788\end{array}[/tex]
So, we know that
Putting the values ,
Mean, x̅ = 1788/30 = 59.6
Henceforth,