The table shows the weekly wages for the number of workers doing their work. Find the median class for the following data.

80 - 85

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70 - 75

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65 - 70

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50 - 55

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Solution

The correct option is B $65 - 70$
To find the median class:
First add the total number of frequencies.
Here, $f = 111$
$=$ $\frac{T o t a l n u m b e r o f f r e q u e n c y}{2}$
$=$ $\frac{111}{2} = 55.5$
Hence, the value 55.4 lies in the class interval 65-70 from the cummulative frequency table.

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Similar questions

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 . 80

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

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	$5$	$20$	$10$	$10$	$9$	$6$	$12$	$8$

800

Wages ( in hundreds)	$20 - 25$	$25 - 30$	$30 - 35$	$35 - 40$	$40 - 45$	$45 - 50$	$50 - 55$	$55 - 60$
No. of persons	$50$	$70$	$100$	$180$	$150$	$120$	$70$	$60$

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