begin array - c - c - Whine -textMarks - Cumulative Frequency Whline0 - 0 110 - 71120 - 28 130 - 541140 - 7150 - 841160 - 10570 - 147 180 - 180 190 - 196 I100 - 200 lllhlineend array Find the frequency for the class interval 70-80-A- 33B- 42C- 147D- 16

The correct option is A 33 [ Marks amp; C.I. amp; Cumulative Frequency amp; Frequency; ...

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Byju's Answer

Standard X

Mathematics

Data

begin array |...

Question

$\begin{matrix} Marks & Cumulative~Frequency 0 & 0 10 & 7 20 & 28 30 & 54 40 & 71 50 & 84 60 & 105 70 & 147 80 & 180 90 & 196 100 & 200 \end{matrix}$

Find the frequency for the class interval 70 - 80.

True

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False

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147

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Solution

The correct option is B
False

$\begin{matrix} Marks & C.I. & Cumulative Frequency & Frequency 0 - 10 & 7 & 7 10 - 20 & 28 & 28 - 7 = 21 20 - 30 & 54 & 54 - 28 = 26 30 - 40 & 71 & 71 - 54 = 17 40 - 50 & 84 & 84 - 71 = 13 50 - 60 & 105 & 105 - 84 = 21 60 - 70 & 147 & 147 - 105 = 42 70 - 80 & 180 & 180 - 147 = 33 80 - 90 & 196 & 196 - 180 = 16 90 - 100 & 200 & 200 - 196 = 4 \end{matrix}$

Therefore from the table we see that the frequency for the class interval 70 - 80 is 33.

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Similar questions

$\begin{matrix} Marks & Cumulative Frequency 0 & 100 10 & 87 20 & 65 30 & 55 40 & 42 50 & 36 60 & 31 70 & 21 80 & 18 90 & 7 100 & 0 \end{matrix}$

Find the frequency for the clas interval 80 - 90.

Find the cumulative frequency for the class interval 65-70 $\begin{matrix} Class interval & Frequency 50 - 55 & 5 55 - 60 & 20 60 - 65 & 10 65 - 70 & 10 70 - 75 & 9 75 - 80 & 6 80 - 85 & 6 85 - 90 & 8 \end{matrix}$

The following table shows the class mark and frequency. Convert the table in the class interval
$\begin{matrix} Class Mark & Frequency 55 & 8 65 & 6 75 & 18 85 & 25 95 & 12 \end{matrix}$

Calculate the mean deviation about the mean for the following frequency distribution :

$\begin{matrix} Class Interval : & 0 - 4 & 4 - 8 & 8 - 12 & 12 - 16 & 16 - 20 Frequency : & 4 & 6 & 8 & 5 & 2 \end{matrix}$

Q. Find the mode of the following distribution.

(i)

Class-interval:	0−10	10−20	20−30	30−40	40−50	50−60	60−70	70−80
Frequency:	5	8	7	12	28	20	10	10

(ii)

Class-interval:	10−15	15−20	20−25	25−30	30−35	35−40
Frequency:	30	45	75	35	25	15

(iii)

Class-interval:	25−30	30−35	35−40	40−45	45−50	50−55
Frequency:	25	34	50	42	38	14

(iv)

Class:	0−10	10−20	20−30	30−40	40−50	50−60	60–70
Frequency:	8	10	10	16	12	6	7

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MarksCumulative~Frequency00107202830544071508460105701478018090196100200 Find the frequency for the class interval 70 - 80.

$\begin{matrix} Marks & Cumulative~Frequency 0 & 0 10 & 7 20 & 28 30 & 54 40 & 71 50 & 84 60 & 105 70 & 147 80 & 180 90 & 196 100 & 200 \end{matrix}$

Find the frequency for the class interval 70 - 80.