If the sum of all the frequencies is 18- then the value of y is- Variable x 1 2 3 4 5- Frequency 4 5 y 1 2- -

Here, n=∑ f_i=4+5+y+1+2=12+y Given: ∑ f_i=18 ∴ n=∑ f_i=12+y=18 ⇒ y=18 12=6. ...

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Standard X

Mathematics

Frequency

If the sum of...

Question

If the sum of all the frequencies is 18, then the value of y is:
$\begin{matrix} V a r i a b l e (x) & 1 & 2 & 3 & 4 & 5 F r e q u e n c y & 4 & 5 & y & 1 & 2 \end{matrix}$

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Solution

The correct option is B 6
Here, $n = \sum f_{i} = 4 + 5 + y + 1 + 2 = 12 + y$
Given: $\sum f_{i} = 18$
$∴ n = \sum f_{i} = 12 + y = 18$
$\Rightarrow y = 18 - 12 = 6$ .

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15	15	18	16	20	21	25	25	15	16	18	22	24	25	20
18	22	24	24	25	25	23	20	15	16	17	19	18	22	22

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15	15	18	16	20	21	25	25	15	16	18	22	24	25	20
18	22	24	24	25	25	23	20	15	16	17	19	18	22	22

15	15	18	16	20	21	25	25	15	16	18	22	24	25	20
18	22	24	24	25	25	23	20	15	16	17	19	18	22	22

If the sum of all the frequencies is 18, then the value of y is: Variable (x)12345Frequency45y12

The correct option is B 6Here, n=∑fi=4+5+y+1+2=12+y Given: ∑fi=18 ∴n=∑fi=12+y=18 ⇒y=18−12=6.

If the sum of all the frequencies is 18, then the value of y is:
$\begin{matrix} V a r i a b l e (x) & 1 & 2 & 3 & 4 & 5 F r e q u e n c y & 4 & 5 & y & 1 & 2 \end{matrix}$

The correct option is B 6
Here, $n = \sum f_{i} = 4 + 5 + y + 1 + 2 = 12 + y$
Given: $\sum f_{i} = 18$
$∴ n = \sum f_{i} = 12 + y = 18$
$\Rightarrow y = 18 - 12 = 6$ .

15	15	18	16	20	21	25	25	15	16	18	22	24	25	20
18	22	24	24	25	25	23	20	15	16	17	19	18	22	22