estadistica

1) Se supone que 20 alumnos se eligen y obtienen salarios en dólares que ganaron el sábado pasado son los siguientes:
30-23-18-13-29 ordenados :11-13-15-17-1880-35-17-11-25 21-21-23-25-25
25-21-21-30-26 25-26-29-30-30
30-42-15-25-3630-35-36-42-80


*Rango = 80-11=69

*Intervalo de clase = k = 1+1.3332 . log(n)
K = 1+1.3332. log(20)
K = 1+1.3332 . (1.301029996)
K = 1+1.73
K = 2.73= 3


*Amplitud de intervalo de clase
L = Rango/K = 69/3 = 23







Intervalo
F
Lim.superior
Lim.inferior
Fac
Mc
F%
Fac%
11-13
213.50
10.50
2
12
0.1
0.1
14-16
1
16.50
13.50
3
15
0.05
0.15
17-19
2
19.50
16.50
5
18
0.1
0.25
20-22
2
22.50
19.50
7
21
0.1
0.35
23-25
4
25.50
22.50
1124
0.2
0.55
26-28
1
28.50
25.50
12
27
0.05
0.6
29-31
4
31.50
28.50
16
30
0.2
0.8
32-34
-----------
34.50
31.50
-----------
33
------------
-----------
35-37
237.50
34.50
18
36
0.1
0.9
38-40
-----------
40.50
37.50
-----------
39
-----------
-----------
41-43
1
43.50
40.50
19
42
0.05
0.95
44-46
-----------
46.50
43.50-----------
45
----------
----------
47-49
-----------
49.50
46.50
-----------
48
----------
----------
50-52
-----------
52.50
49.50
-----------
51
----------
----------...