Consider the following frequency distribution; Monthy income in Rs

More than or equal to 10000
More than or equal to 13000
More than or equal to 16000
More than or equal to 19000
More than or equal to 22000
More than or equal to 25000 No of families

100
85
69
50
33
15
Find the number of families having income range from Rs 16000 to Rs 19000

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Solution

$No . of families having income range from Rs . 16000 to Rs . 19000 = No . of families having income more than Rs . 16000 - No . of families having income more than Rs . 19000 = 69 - 50 = 19 ANS . . . No . of families having income range from Rs . 16000 to Rs . 19000 is 19 .$

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Q. In the following distribution :

Monthly income range (in Rs.)	Number of families
Income more than Rs. $10000$	$100$
Income more than Rs. $13000$	$85$
Income more than Rs. $16000$	$69$
Income more than Rs. $19000$	$50$
Income more than Rs. $22000$	$33$
Income more than Rs. $25000$	$15$

The numbers of families having income range (in Rs)

16000 - 19000

is:

Look at the cumulative frequency distribution table given below:

$\begin{matrix} M o n t h l y i n c o m e & N u m b e r o f f a m i l i e s M o r e t h a n R s .10000 & 100 M o r e t h a n R s .14000 & 85 M o r e t h a n R s .18000 & 69 M o r e t h a n R s .20000 & 50 M o r e t h a n R s .25000 & 37 M o r e t h a n R s .30000 & 15 \end{matrix}$

Number of families having income range 20000 to 25000 is

(a) 19 (b) 16 (c) 13 (d) 22

Q. Question 11
Construct a frequency distribution table from the following data

\begin{matrix} M a r k s (o u t o f 90) & N u m b e r o f s t u d e n t s M o r e t h a n o r e q u a l t o 80 & 4 M o r e t h a n o r e q u a l t o 70 & 6 M o r e t h a n o r e q u a l t o 60 & 11 M o r e t h a n o r e q u a l t o 50 & 17 M o r e t h a n o r e q u a l t o 40 & 23 M o r e t h a n o r e q u a l t o 30 & 27 M o r e t h a n o r e q u a l t o 20 & 30 M o r e t h a n o r e q u a l t o 10 & 32 M o r e t h a n o r e q u a l t o 0 & 34 \end{matrix}

Q. Consider the following distribution :

Marks obtained	Number of students
More than or equal to $0$	$63$
More than or equal to $10$	$58$
More than or equal to $20$	$55$
More than or equal to $30$	$51$
More than or equal to $40$	$48$
More than or equal to $50$	$42$

The frequency of the class

30 - 40

is:

Q. Question 11
Consider the following distribution

\begin{matrix} M a r k s o b t a i n e d & N u m b e r o f s t u d e n t s M o r e t h a n o r e q u a l t o 0 & 63 M o r e t h a n o r e q u a l t o 10 & 58 M o r e t h a n o r e q u a l t o 20 & 55 M o r e t h a n o r e q u a l t o 30 & 51 M o r e t h a n o r e q u a l t o 40 & 48 M o r e t h a n o r e q u a l t o 50 & 42 \end{matrix}

the frequency of the class 30-40 is
(a) 3
(b) 4
(c) 48
(d) 51

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No. of families having income range from Rs.16000 to Rs.19000=No. of families having income more than Rs.16000-No. of families having income more than Rs.19000=69-50=19 ANS...No. of families having income range from Rs.16000 to Rs.19000 is 19.

$No . of families having income range from Rs . 16000 to Rs . 19000 = No . of families having income more than Rs . 16000 - No . of families having income more than Rs . 19000 = 69 - 50 = 19 ANS . . . No . of families having income range from Rs . 16000 to Rs . 19000 is 19 .$