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Properties of Measures of Central Tendency

The amount co...

Question

The amount collected by $15$ students for flood relief find is given below. Answer the following.
Amount Number of students
$0 - 10$ $3$
$10 - 20$ $4$
$20 - 30$ $5$
$30 - 40$ $2$
$40 - 50$ $1$
(iv)Find the total amount collected.

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Solution

Mean $= \frac{15 + 60 + 125 + 70 + 45}{15}$
Total Amount $= 15 \times M e a n = 315$

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Q. The amount collected by

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students for flood relief find is given below. Answer the following.

Amount	Number of students
$0 - 10$	$3$
$10 - 20$	$4$
$20 - 30$	$5$
$30 - 40$	$2$
$40 - 50$	$1$

(i)How many students collected less than

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Q. The amount collected by

15

students for flood relief find is given below. Answer the following.

Amount	Number of students
$0 - 10$	$3$
$10 - 20$	$4$
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(ii)Find the mean amount collected by a student.

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students for flood relief find is given below. Answer the following.

Amount	Number of students
$0 - 10$	$3$
$10 - 20$	$4$
$20 - 30$	$5$
$30 - 40$	$2$
$40 - 50$	$1$

(iii)Find the probability of the students collecting the highest amount.

Q. The distribution of money collected by students for a flood relief fund is shown.

Money (in Rs.)	0-10	10-20	20-30	30-40	40-50
No. of students	5	7	5	2	6

Using the direct method, find the mean amount collected by a student.

Q. Below is given the distribution of money (in Rs.) collected by students for flood, relief fund

Money (in Rs)	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$ $	40-50$
No. of Students	$5$	$7$	$5$	$2$	$6$

Find mean of money (in Rs) collected by a student using 'Direct Method'.

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Properties of Measures of Central Tendency

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