The cumulative frequency of the class 70-90 is : 1. 80 2. 120 3. 180 4. 40

From the graph, we form the cumulative frequency table : Class | Frequency | Cumulative frequency --- | ----- | -------- 30-50 | 50 | 50 50-70 | 30 | 80 (50 + 30) 70-90 | 40 | 120 (80 + 40) 90-110 | 60 | 180 (120 + 60) Hence, Option 2 is the correct option.

Mathematics

The cumulative frequency of the class 70-90 is :
80
120
180
40

Statistics

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Answer

From the graph, we form the cumulative frequency table :

Class	Frequency	Cumulative frequency
30-50	50	50
50-70	30	80 (50 + 30)
70-90	40	120 (80 + 40)
90-110	60	180 (120 + 60)

Hence, Option 2 is the correct option.

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Related Questions

From the given table the values of a, b and c are :
C.I. Frequency Cumulative
Frequency
30-40 24 24
40-50 a 40
50-60 12 b
60-70 c 60
a = 16, b = 52 and c = 8
a = 16, b = 12 and c = 8
a = 40, b = 52 and c = 60
a = 40, b = 12 and c = 60
View Answer

The cumulative curve for a frequency distribution terminates at :
100
$\dfrac{\text{upper limit + lower limit}}{2}$
$\dfrac{\text{lower limit + upper limit}}{2}$
upper limit of last class
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For the given frequency distribution, the class mark is :
C.I. f
30-34 8
34-38 10
38-42 8
$\dfrac{38 - 34}{2}$
$\dfrac{30 + 34}{2}$
10 - 8
34 + 38
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The cumulative curve for a frequency distribution starts from :
0
$\dfrac{\text{upper limit + lower limit}}{2}$
lower limit of 1st class
$\dfrac{\text{lower limit - upper limit}}{2}$
View Answer

C.I.	Frequency	Cumulative Frequency
30-40	24	24
40-50	a	40
50-60	12	b
60-70	c	60

C.I.	f
30-34	8
34-38	10
38-42	8

Mathematics

The cumulative frequency of the class 70-90 is :8012018040

Statistics

Answer

Related Questions

From the given table the values of a, b and c are :C.I.FrequencyCumulativeFrequency30-40242440-50a4050-6012b60-70c60a = 16, b = 52 and c = 8a = 16, b = 12 and c = 8a = 40, b = 52 and c = 60a = 40, b = 12 and c = 60

The cumulative curve for a frequency distribution terminates at :100upper limit + lower limit2\dfrac{\text{upper limit + lower limit}}{2}2upper limit + lower limit​lower limit + upper limit2\dfrac{\text{lower limit + upper limit}}{2}2lower limit + upper limit​upper limit of last class

For the given frequency distribution, the class mark is :C.I.f30-34834-381038-42838−342\dfrac{38 - 34}{2}238−34​30+342\dfrac{30 + 34}{2}230+34​10 - 834 + 38

The cumulative curve for a frequency distribution starts from :0upper limit + lower limit2\dfrac{\text{upper limit + lower limit}}{2}2upper limit + lower limit​lower limit of 1st classlower limit - upper limit2\dfrac{\text{lower limit - upper limit}}{2}2lower limit - upper limit​

The cumulative frequency of the class 70-90 is :
80
120
180
40

From the given table the values of a, b and c are :
C.I. Frequency Cumulative
Frequency
30-40 24 24
40-50 a 40
50-60 12 b
60-70 c 60
a = 16, b = 52 and c = 8
a = 16, b = 12 and c = 8
a = 40, b = 52 and c = 60
a = 40, b = 12 and c = 60

The cumulative curve for a frequency distribution terminates at :
100
$\dfrac{\text{upper limit + lower limit}}{2}$
$\dfrac{\text{lower limit + upper limit}}{2}$
upper limit of last class

For the given frequency distribution, the class mark is :
C.I. f
30-34 8
34-38 10
38-42 8
$\dfrac{38 - 34}{2}$
$\dfrac{30 + 34}{2}$
10 - 8
34 + 38

The cumulative curve for a frequency distribution starts from :
0
$\dfrac{\text{upper limit + lower limit}}{2}$
lower limit of 1st class
$\dfrac{\text{lower limit - upper limit}}{2}$