Ejercisios

De los siguientes datos obtenga: promedio, mediana, rango, desviación estándar.
A.
Promedio: 24.44 244.4/10 = 24.44
Rango: 47.2 53-5.8= 47.2
Mediana:5.5 11/ 2 = 5.5
Varianza: 256.29
Desviación: 16.00
S2=(5.8-24.44)2+(8.1-24.44)2+(12.3-24.44)2+(14-24.44)2+(20-24.44)2+(23-24.44)2+(28-24.44)2+(33.2-24.44)2+(47-24.44)2+(53-24.44)2
10-1
S2= 18.6+16.3+12.1+10.4+4.4+1.4+3.6+8.8+22.6+28.69
S2= 345.96+265.69+146.41+108.16+19.36+1.96+12.96+77.4+510.76+817.96 / 9
S2= 2306.62 / 9S2 = 256.29 S= √S2 S=√256.29 S= 16.00
B.
Promedio: 539.254314/8 = 539.25
Rango: 756 973-217= 756
Mediana: 529 576+482/2 = 529
Varianza: 66536.06
Desviación: 257.945
S2=(217-539.25)2+(312-539.25)2+(327-539.25)2+(482-539.25)2+(576- 539.25)2+(637-539.25)2+(790-539.25)2+(973-539.25)2 / 7
S2= 322.25+227.25+212.29+57.25+36.75+97.75+250.75+433.75 /7
S2=103845.06+51642.56+45067.04+3277.56+1350.56+9555.06+62875.56+188139.06 / 7
S2= 465752.46 / 7 s2= 66536.06
S= √66536.06 S=257.945



C.
Promedio: 0.7122 6.41/ 9
Rango: 0.56 0.90-0.34
Mediana: 0.73
Varianza: 0.02589
Desviación: 0.1609



S2=0.37+ 0.08+0.02+0.02+0.02+0.04+0.09+0.13+0.19 / 8
S2= 0.1369+0.0064+0.0004+0.0016+0.0081+0.0169+0.0361 / 8
S2= 0.207 /8 S2= 0.02589...