The mean of given observations is : C.I. | f --- | ---- 30-40 | 2 40-50 | 3 1. 41 2. 27 3. 71 4. 91

C.I. | f | Mean value (x) | fx --- | ---- | ---- | ----- 30-40 | 2 | 35 | 70 40-50 | 3 | 45 | 135 Total | Σf = 5 | | Σfx = 205 By formula, Mean = = 41. Hence, Option 1 is the correct option.

C.I.	f
30-40	2
40-50	3

Find the arithmetic mean (correct to nearest whole number) by using step deviation method.
x f
5 20
10 43
15 75
20 67
25 72
30 45
35 39
40 9
45 8
50 6

x	f
5	20
10	43
15	75
20	67
25	72
30	45
35	39
40	9
45	8
50	6

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Find the mean (correct to one place of decimal) by using short-cut method.
x f
40 14
41 28
43 38
45 50
46 40
49 20
50 10

x	f
40	14
41	28
43	38
45	50
46	40
49	20
50	10

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For data given in the adjoining table, the mean is :
C.I. f x u = (x - A)/i f × u
0-10 5
10-20 10
20-30 10
17
27
25
60

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The mean of observations, given in the adjoining table, is 20, the value of a is :
x f fx
10 10
20 a
30 10
20
30
10
25

x	f	fx
10	10
20	a
30	10

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Mathematics

The mean of given observations is :
C.I. f
30-40 2
40-50 3
41
27
71
91

Statistics

Related Questions

Find the arithmetic mean (correct to nearest whole number) by using step deviation method.
x f
5 20
10 43
15 75
20 67
25 72
30 45
35 39
40 9
45 8
50 6

Find the mean (correct to one place of decimal) by using short-cut method.
x f
40 14
41 28
43 38
45 50
46 40
49 20
50 10

For data given in the adjoining table, the mean is :
C.I. f x u = (x - A)/i f × u
0-10 5
10-20 10
20-30 10
17
27
25
60

The mean of observations, given in the adjoining table, is 20, the value of a is :
x f fx
10 10
20 a
30 10
20
30
10
25

Mathematics

The mean of given observations is :C.I.f30-40240-50341277191

Statistics

Related Questions

Find the arithmetic mean (correct to nearest whole number) by using step deviation method.xf520104315752067257230453539409458506

Find the mean (correct to one place of decimal) by using short-cut method.xf4014412843384550464049205010

For data given in the adjoining table, the mean is :C.I.fxu = (x - A)/if × u0-10510-201020-301017272560

The mean of observations, given in the adjoining table, is 20, the value of a is :xffx101020a301020301025

The mean of given observations is :
C.I. f
30-40 2
40-50 3
41
27
71
91

Find the arithmetic mean (correct to nearest whole number) by using step deviation method.
x f
5 20
10 43
15 75
20 67
25 72
30 45
35 39
40 9
45 8
50 6

Find the mean (correct to one place of decimal) by using short-cut method.
x f
40 14
41 28
43 38
45 50
46 40
49 20
50 10

For data given in the adjoining table, the mean is :
C.I. f x u = (x - A)/i f × u
0-10 5
10-20 10
20-30 10
17
27
25
60

The mean of observations, given in the adjoining table, is 20, the value of a is :
x f fx
10 10
20 a
30 10
20
30
10
25