For the team B , mean number of goals scored goals scored per match was 2 with a standard deviation 1.25 goals. Find which team may be considered more consistent?
For the team B , mean number of goals scored goals scored per match was 2 with a standard deviation 1.25 goals. Find which team may be considered more consistent?
|
No. of goals scored xi |
fi |
fi xi |
fi xi2 |
|
0 |
1 |
0 |
0 |
|
1 |
9 |
9 |
9 |
|
2 |
7 |
14 |
28 |
|
3 |
5 |
15 |
45 |
|
4 |
3 |
12 |
48 |
|
Total |
n = 25 |
∑ |
∑ |
= 50
= 
= 2
S.D = 
= 
= 
= 
= 1.09
For team B, = 2, S.D = 1.25
Since their means are same , therefore σΑ is less than that σΒ, therefore team A is more consistent than team B.
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= 212 , 
= 902.8, 
= 261, 
= 1457.6 which is more varying , the length or weight ?