30, 35, 20, 50, 40, 45, 30
The upper quartile of the data set is

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Solution

The correct option is B 45
The given data set is

30, 35, 20, 50, 40, 45, 30

Let us arrange the data in ascending order, we get

20, 30, 30, 35, 40, 45, 50

Median = 35

The upper half of the data: 40, 45, 50

Upper quartile = 45.

Hence, the upper quartile of the data = 45.

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Similar questions

Variable	0−10	10−20	20−30	30−40	40−50	50−60	60−70
Frequency	10	20	35	40	25	25	15

Size	5−10	10−15	15−20	20−25	25−30	30−35	35−40	40−45	45−50
Frequency	6	10	18	30	15	12	10	6	4

Age	$20 - 25$	$25 - 30$	$30 - 35$	$35 - 40$	$40 - 45$	$45 - 50$
Number of persons	$170$	$110$	$80$	$45$	$40$	$35$

Q_{3}

Marks Group	$5 - 10$	$10 - 15$	$15 - 20$	$20 - 25$	2 $5 - 30$	$30 - 35$	$35 - 40$	$40 - 45$
No. of Students	$5$	$6$	$15$	$10$	$5$	$4$	$2$	$1$

30 - 35, 35 - 40

40 - 45

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