Find the values of p- q- r and s in the given cumulative frequency distribution- x frequency Cumulative frequency- 10 3 p - - 15 10 q - - 20 25 r - - 25 7 s- - 30 5 50- -

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Standard X

Mathematics

Cumulative Frequency

Find the valu...

Question

Find the values of p, q, r and s in the given cumulative frequency distribution.
$\begin{matrix} x & frequency & Cumulative frequency 10 & 3 & p = - - - - 15 & 10 & q = - - - - 20 & 25 & r = - - - - 25 & 7 & s = - - - - 30 & 5 & 50 \end{matrix}$

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Solution

As cumulative frequency is the sum of all previous frequencies up to the current point,

$\begin{matrix} x & frequency & Cumulative frequency 10 & 3 & p = 3 15 & 10 & q = 10 + 3 = 13 20 & 25 & r = 13 + 25 = 38 25 & 7 & s = 38 = 7 = 45 30 & 5 & 45 + 5 = 50 \end{matrix}$

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Q. Find the values of p, q, r and s in the given cumulative frequency distribution.

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Find the values of p, q, r and s in the given cumulative frequency distribution.
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Find the values of p, q, r and s in the given cumulative frequency distribution. xfrequencyCumulative frequency103p=−−−−1510q=−−−−2025r=−−−−257s=−−−−30550

As cumulative frequency is the sum of all previous frequencies up to the current point, xfrequencyCumulative frequency103p=31510q=10+3=132025r=13+25=38257s=38=7=4530545+5=50

Find the values of p, q, r and s in the given cumulative frequency distribution.
$\begin{matrix} x & frequency & Cumulative frequency 10 & 3 & p = - - - - 15 & 10 & q = - - - - 20 & 25 & r = - - - - 25 & 7 & s = - - - - 30 & 5 & 50 \end{matrix}$

As cumulative frequency is the sum of all previous frequencies up to the current point,

$\begin{matrix} x & frequency & Cumulative frequency 10 & 3 & p = 3 15 & 10 & q = 10 + 3 = 13 20 & 25 & r = 13 + 25 = 38 25 & 7 & s = 38 = 7 = 45 30 & 5 & 45 + 5 = 50 \end{matrix}$