(D) In the assumed mean method for calculating the mean,the formula is given by $\bar{x} = A + \frac{\Sigma f_{i} d_{i}}{\Sigma f_{i}}$.Here,$A$ is th

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(D) In the assumed mean method for calculating the mean,the formula is given by $\bar{x} = A + \frac{\Sigma f_{i} d_{i}}{\Sigma f_{i}}$.Here,$A$ is the assumed mean and $x_{i}$ is the class mark (midpoint) of the $i^{th}$ class interval.The deviation $d_{i}$ is defined as the difference between the class mark and the assumed mean.Therefore,$d_{i} = x_{i} - A$.

Class 10 Mathematics Statistics Mix Examples - Statistics

Easy

In the formula $\bar{x} = A + \frac{\Sigma f_{i} d_{i}}{\Sigma f_{i}}$ for the mean,$d_{i} = \dots$

A
$A - f_{i}$
B
$A - x_{i}$
C
$f_{i} - A$
D
$x_{i} - A$

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Mix Examples - Statistics

For the calculation of mode of the following frequency distribution,$f_{0} = \dots \dots \dots \dots \dots$

Class $1-3$ $3-5$ $5-7$ $7-9$ $9-11$

Frequency $6$ $3$ $8$ $2$ $1$

Easy

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Find the unknown entries $a, b, c, d, e, f$ in the following distribution of heights of students in a class:

Height (in $cm$) Frequency Cumulative frequency

$150-155$ $12$ $a$

$155-160$ $b$ $25$

$160-165$ $10$ $c$

$165-170$ $d$ $43$

$170-175$ $e$ $48$

$175-180$ $2$ $f$

Total $50$ -

Medium

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For a given frequency distribution,$n=100, A=15$ and $\bar{x}=15$. Then,$\Sigma f_{i} d_{i} = \ldots$

Medium

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For a given frequency distribution,$n=200$,$\Sigma f_{i} d_{i}=0$ and $A=25$. Then,$\bar{x}=\ldots \ldots \ldots \ldots$

Easy

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Midpoint (Midvalue) of the class $15-30$ is ........

Easy

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Height (in $cm$)	Frequency	Cumulative frequency
$150-155$	$12$	$a$
$155-160$	$b$	$25$
$160-165$	$10$	$c$
$165-170$	$d$	$43$
$170-175$	$e$	$48$
$175-180$	$2$	$f$
Total	$50$	-

In the formula $\bar{x} = A + \frac{\Sigma f_{i} d_{i}}{\Sigma f_{i}}$ for the mean,$d_{i} = \dots$

Similar Questions

For the calculation of mode of the following frequency distribution,$f_{0} = \dots \dots \dots \dots \dots$ Class $1-3$ $3-5$ $5-7$ $7-9$ $9-11$ Frequency $6$ $3$ $8$ $2$ $1$

Find the unknown entries $a, b, c, d, e, f$ in the following distribution of heights of students in a class: Height (in $cm$) Frequency Cumulative frequency $150-155$ $12$ $a$ $155-160$ $b$ $25$ $160-165$ $10$ $c$ $165-170$ $d$ $43$ $170-175$ $e$ $48$ $175-180$ $2$ $f$ Total $50$ -

For a given frequency distribution,$n=100, A=15$ and $\bar{x}=15$. Then,$\Sigma f_{i} d_{i} = \ldots$

For a given frequency distribution,$n=200$,$\Sigma f_{i} d_{i}=0$ and $A=25$. Then,$\bar{x}=\ldots \ldots \ldots \ldots$

Midpoint (Midvalue) of the class $15-30$ is ........

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For the calculation of mode of the following frequency distribution,$f_{0} = \dots \dots \dots \dots \dots$

Class $1-3$ $3-5$ $5-7$ $7-9$ $9-11$

Frequency $6$ $3$ $8$ $2$ $1$

Find the unknown entries $a, b, c, d, e, f$ in the following distribution of heights of students in a class:

Height (in $cm$) Frequency Cumulative frequency

$150-155$ $12$ $a$

$155-160$ $b$ $25$

$160-165$ $10$ $c$

$165-170$ $d$ $43$

$170-175$ $e$ $48$

$175-180$ $2$ $f$

Total $50$ -