Problema 1X lX- l (Xn- )^2 X^2

7.69 0.202 0.041 59.147.72 7.720 59.598 59.607.8 7.800 60.840 60.84

7.86 7.860 61.780 61.787.9 7.900 62.410 62.41

7.94 7.940 63.044 63.047.97 7.970 63.521 63.528.06 8.060 64.964 64.968.09 8.090 65.448 65.45

71.03 63.542 501.645 560.74

Media 7.892 DM

Problema 2

f Xi0 20 7 10

20 40 13 3040 60 20 5060 80 15 7080 100 5 90

Total 60 250

49.33333333

22.47714889

Media Aritmetica

Desviacion estandar

((lX- l)/s)^33.0440816477356169364.17938191174684.13723726178746.39816379181489.26216583184260.04311896186356.53436479192741.3012013

194901.519955561462546.4196711

7.060 ơ 7.466 s 0.14

F x Xi Xi^2 F*Xi^270 49 700 (F*Xi)^2 8761600

390 169 117001000 400 500001050 225 73500

450 25 405002960 868 176400

CA 235052.10