1. Following are the records of two players regarding their performance in cricket matches:
Score of
|
Player A: 48
Score of
|
52
|
55
|
60
|
65
|
45
|
63 70
|
|
Player : 33
|
35
|
80
|
70
|
100
|
15
|
11 25
|
(a) Which player has scored more on an average?
(b) Which player is more consistent in his performance.
2. Claculate mean deviation from the median for the following data:
|
Age (years)
|
4-6
|
6-8
|
8-10
|
10-12
|
12-14 14-16 16-18
|
|
No. of Students:
|
30
|
90
|
120
|
150
|
80 60 20
|
3. (a) The following table gives the number of finished articles turned out daily by the different number of workers in the factory. Find the mean value and the standard deviation of output of finished articles daily.
|
No. of Articles: 18 19
|
20
|
21
|
22
|
23
|
24
|
25
|
26 27
|
|
No. of Workers: 3 7
|
11
|
14
|
18
|
17
|
13
|
8
|
5 4
|
(b) Explain, with a suitable example, the term Variation. Mention some common measures of variation and describe the one which you think to be most important of them.