The following table gives the wages of workers in a factory-array - c - c - Wline Wages in ns - No- of workers lMhline 45-50 - 5 150-55 - 8 55-60 - 3060-65 - 25 165-70 - 141170-75 - 12 75-80 - 6 Whline end array Calculate the mean by the shorcut method- -4 MARKS-

Formula: 2 Marks Solution: 2 Marks [ Class interval amp; f_i amp; x_i amp; d_i=x_i A amp; f_id_i; 45 50 am ...

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Direct Method of Finding Mean

The following...

Question

The following table gives the wages of workers in a factory:
$\begin{matrix} W a g e s i n R s & N o . o f w o r k e r s 45 - 50 & 5 50 - 55 & 8 55 - 60 & 30 60 - 65 & 25 65 - 70 & 14 70 - 75 & 12 75 - 80 & 6 \end{matrix}$
Calculate the mean by the shorcut method.
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Weekly wages (in Rs.)	$50 - 55$	$55 - 60$	$60 - 65$	$65 - 70$	$70 - 75$	$75 - 80$	$80 - 85$	$85 - 90$
No. of workers	$5$	$20$	$10$	$10$	$9$	$6$	$12$	$8$

R s . 80

Weekly wages (in Rs.)	$50 - 55$	$55 - 60$	$60 - 65$	$65 - 70$	$70 - 75$	$75 - 80$	$80 - 85$	$85 - 90$
No. of workers	$5$	$20$	$10$	$10$	$9$	$6$	$12$	$8$

Weekly wages (in Rs.)	$50 - 55$	$55 - 60$	$60 - 65$	$65 - 70$	$70 - 75$	$75 - 80$	$80 - 85$	$85 - 90$
No. of workers	$5$	$20$	$10$	$10$	$9$	$6$	$12$	$8$

R s . 65

R s . 85

Weekly wages (in Rs.)	$50 - 55$	$55 - 60$	$60 - 65$	$65 - 70$	$70 - 75$	$75 - 80$	$80 - 85$	$85 - 90$
No. of workers	$5$	$20$	$10$	$10$	$9$	$6$	$12$	$8$

Wages in rupees	50	60	70	80	90
No. of workers	4	6	3	7	5

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