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Estadística descriptiva 1
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Estadística descriptiva 1
1.
2.
•
3.
Según las especificaciones
del problema estos son nuestros datos aleatorios a usar 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2.6 2.8 3.1 2.8 2.9 2.7 3.2 2.1 2.7 3.3 3.0 2.4 2.9 2.7 2.4 2.7 2.9 2.8 2.6 3.2 3.0 2.9 2.9 2.5 3.1 2.7 3.2 2.7 3.1 2.8 2 2.5 2.4 2.7 2.7 3.0 2.9 2.8 2.8 3.0 3.4 2.5 2.6 3.4 2.6 2.7 3.4 2.8 2.6 2.4 2.6 3.1 2.6 2.7 2.6 3.1 2.7 2.9 2.6 2.7 3.2 3 4 5 6 7 8 9 10 2.9 2.4 3.1 2.7 3.2 2.5 3.2 2.0 2.2 2.7 2.8 2.6 3.0 2.9 2.8 2.8 2.5 2.3 2.6 2.9 2.4 2.9 3.3 3.1 3.1 3.2 3.0 2.8 2.8 3.0 2.7 2.8 3.2 2.4 3.0 2.7 2.2 2.6 3.0 3.0 2.5 2.5 3.0 3.4 2.8 2.3 2.7 3.0 2.6 2.4 3.1 2.9 3.0 2.9 2.9 2.5 3.0 3.2 2.4 2.7 2.9 2.6 2.4 2.8 2.8 3.3 3.0 2.7 2.7 2.9 2.4 2.6 2.7 2.6 2.7 2.6 3.1 2.7 3.3 3.1 2.9 2.7 2.8 3.1 2.6 2.8 2.8 3.0 2.2 3.2 3.1 2.9 3.3 2.5 2.8 2.5 3.2 2.7 2.3 2.6 3.1 2.3 2.6 2.6 2.8 3.4 2.7 2.7 3.1 2.9 2.7 2.8 2.8 3.0 3.0 2.8 2.5 2.7 2.6 2.7 2.5 3.1 3.3 2.5 2.7 2.3 3.3 2.5 2.6 2.9 2.7 2.9 3.0 2.2 2.6 2.7 3.5 2.8 2.6 2.8 2.7 3.1 2.9 2.9 2.3 3.1 2.6 2.8 2.9 2.8 3.4 3.0 2.9 2.6 2.6 2.8 2.6 3.0 2.6 2.7 2.7 2.8 2.4 2.8 2.6 3.1 3.1 2.5 2.5 2.3 2.5 2.9 3.2 2.9 3.0 2.8 2.6 2.9 3.2 3.1 3.0 3.0 2.0 2.5 3.1 3.0 2.9 2.9 2.8 2.6 3.2 2.6 2.5 2.8 2.6 3.0 2.6 2.8 2.9 3.0 3.3 2.9 2.7 2.7 3.1 2.5 2.7 2.2 3.0 2.5 2.9 3.1 3.8 3.0 2.9 2.7 2.7 2.5 2.5 3.1 2.9 3.5 2.3 2.5 2.5 2.5 2.6 2.7 2.7 2.7 3.0 3.1 2.5 2.9 2.4 2.4 2.5 2.9 2.9 2.8
4.
• • • • • • • •
5.
Frecuencias Categorias o clases xi 2.0 2.1 2.2 Moda 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 Media Aritmética Desviación Media fi 2 1 5 8 14 28 37 44 36 38 30 26 14 8 6 2 0 0 1 fai 2 3 8 16 30 58 95 139 175 213 243 269 283 291 297 299 299 299 300 Medidas
de tendencia central y dispersion fri frai f ix i |x i-x|f i (x i-x) 2 f i 0.0067 0.67% 4 1.59 1.26 0.0033 1.00% 2.1 0.69 0.48 0.0167 2.67% 11 2.97 1.76 0.0267 5.33% 18.4 3.95 1.95 0.0467 10.00% 33.6 5.51 2.17 0.0933 19.33% 70 8.22 2.41 Mediana 0.1233 31.67% 96.2 7.17 1.39 0.1467 46.33% 118.8 4.12 0.39 0.1200 58.33% 100.8 0.23 0.00 0.1267 71.00% 110.2 4.04 0.43 0.1000 81.00% 90 6.19 1.28 0.0867 89.67% 80.6 7.96 2.44 0.0467 94.33% 44.8 5.69 2.31 0.0267 97.00% 26.4 4.05 2.05 0.0200 99.00% 20.4 3.64 2.21 0.0067 Desviación 99.67% 7 1.41 1.00 0.0000 99.67% 0 0.00 0.00 Estándar 0.0000 99.67% 0 0.00 0.00 0.0033 100.00% 3.8 1.01 1.01 Totales 838.1 68.44 24.54 x= 2.79 Desviación Media= 0.2281311 Varianza= 0.081793222 Desviación= 0.285995144 • • • • • • • • Varianza
6.
Frecuencias Categorias o clases xi 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 fi 2 1 5 8 14 28 37 44 36 38 30 26 14 8 6 2 0 0 1 fai 2 3 8 16 30 58 95 139 175 213 243 269 283 291 297 299 299 299 300 fri 0.0067 0.0033 0.0167 0.0267 0.0467 0.0933 0.1233 0.1467 0.1200 0.1267 0.1000 0.0867 0.0467 0.0267 0.0200 0.0067 0.0000 0.0000 0.0033 frai 0.67% 1.00% 2.67% 5.33% 10.00% 19.33% 31.67% 46.33% 58.33% 71.00% 81.00% 89.67% 94.33% 97.00% 99.00% 99.67% 99.67% 99.67% 100.00% Medidas
de tendencia central y dispersion Frecuencia Absolutai-x|f i fix i |x (x i-x) 2 f i 4 2.1 11 18.4 33.6 70 96.2 118.8 100.8 110.2 90 80.6 44.8 26.4 20.4 7 0 0 3.8 1.59 0.69 2.97 3.95 5.51 8.22 7.17 4.12 0.23 4.04 6.19 7.96 5.69 4.05 3.64 1.41 0.00 0.00 1.01 1.26 0.48 1.76 1.95 2.17 2.41 1.39 0.39 0.00 0.43 1.28 2.44 2.31 2.05 2.21 1.00 0.00 0.00 1.01 •
7.
Medidas de tendencia Medidas
de tendencia central central Frecuencias Frecuencias rias o claseso clases y dispersion Categorias y dispersion xi 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 xi 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 fi 2 1 5 8 14 28 37 44 36 38 30 26 14 8 6 2 0 0 1 fai fi frfai i 2 0.0067 2 2 3 0.0033 1 3 5 8 8 0.0167 16 0.0267 8 16 30 14 30 0.0467 58 28 58 0.0933 95 37 95 0.1233 139 44 139 0.1467 175 36 175 0.1200 213 38 213 0.1267 243 30 243 0.1000 269 26 269 0.0867 283 14 283 0.0467 291 0.0267 8 291 297 0.0200 6 297 299 0.0067 2 299 299 0.0000 0 299 299 0.0000 0 299 300 0.0033 1 300 fri i fraii Frecuencia(x i-x) 2 fi (x i-x) 2 fi fii fra fix |xix-x|f i |x i-x|f 0.67% 4 1.59 1.59 0.0067 0.67% Relativa 1.26 1.26 4 1.00% 2.1 0.69 0.69 0.48 0.48 0.0033 1.00% 2.1 0.0167 2.67% 11 2.67% 11 2.97 2.97 1.76 1.76 5.33% 18.4 3.95 3.95 1.95 1.95 0.0267 5.33% 18.4 0.0467 10.00% 33.6 10.00% 33.6 5.51 5.51 2.17 2.17 19.33% 70 8.22 8.22 2.41 2.41 0.0933 19.33% 70 0.1233 31.67% 96.2 31.67% 96.2 7.17 7.17 1.39 1.39 46.33% 118.8 4.12 4.12 0.39 0.39 0.1467 46.33% 118.8 0.1200 58.33% 100.8 58.33% 100.8 0.23 0.23 0.00 0.00 71.00% 110.2 4.04 4.04 0.43 0.43 0.1267 71.00% 110.2 0.1000 81.00% 90 81.00% 90 6.19 6.19 1.28 1.28 89.67% 80.6 7.96 7.96 2.44 2.44 0.0867 89.67% 80.6 94.33% 44.8 5.69 5.69 2.31 2.31 0.0467 94.33% 44.8 97.00% 26.4 4.05 4.05 2.05 2.05 0.0267 97.00% 26.4 99.00% 20.4 3.64 3.64 2.21 2.21 0.0200 99.00% 20.4 99.67% 7 0.0067 99.67% 1.41 1.41 1.00 1.00 7 99.67% 0 0.0000 99.67% 0.00 0.00 0.00 0.00 0 99.67% 0 0.0000 99.67% 0.00 0.00 0.00 0.00 0 100.00%100.00% 3.8 3.8 1.01 1.01 1.01 1.01 0.0033 •
8.
Medidas de tendencia
central Medidas de tendencia central Frecuencias Frecuencia R. y dispersion y dispersion Acumulada 2 fa frai |x i fi (x i-x) fi fri fi fraii friix i |x i-x|f i fix i (x i-x) 2-x|f i f 0.0067 20.67% 0.0067 0.67% 4 1.59 4 1.26 2 1.59 1.26 • 0.0033 11.00% 0.0033 1.00% 2.1 0.48 2.1 0.69 3 0.69 0.48 8 2.97 1.76 0.0167 52.67% 0.0167 2.67% 11 2.97 11 1.76 0.0267 85.33% 0.0267 5.33% 18.4 1.95 18.4 3.95 16 3.95 1.95 5.51 2.17 0.0467 14 30 0.0467 10.00% 33.6 2.17 10.00% 33.6 5.51 0.0933 28 58 0.0933 19.33% 70 2.41 19.33% 70 8.22 8.22 2.41 7.17 1.39 0.1233 37 95 0.1233 31.67% 96.2 1.39 31.67% 96.2 7.17 0.1467 44 139 0.1467 46.33% 118.8 0.39 46.33% 118.8 4.12 4.12 0.39 0.23 0.00 0.1200 36 175 0.1200 58.33% 100.8 0.00 58.33% 100.8 0.23 0.1267 38 213 0.1267 71.00% 110.2 0.43 71.00% 110.2 4.04 4.04 0.43 6.19 1.28 0.1000 30 243 0.1000 81.00% 90 1.28 81.00% 90 6.19 0.0867 26 269 0.0867 89.67% 80.6 2.44 89.67% 80.6 7.96 7.96 2.44 0.0467 14 283 0.0467 94.33% 44.8 2.31 94.33% 44.8 5.69 5.69 2.31 0.0267 8 291 0.0267 97.00% 26.4 2.05 97.00% 26.4 4.05 4.05 2.05 0.0200 6 297 0.0200 99.00% 20.4 2.21 99.00% 20.4 3.64 3.64 2.21 0.0067 2 299 0.0067 99.67% 7 1.00 99.67% 7 1.41 1.41 1.00 0.0000 0 299 0.0000 99.67% 0 0.00 99.67% 0 0.00 0.00 0.00 0.0000 0 299 0.0000 99.67% 0 0.00 99.67% 0 0.00 0.00 0.00 0.0033 100.00% 3.8 100.00% 3.8 1.01 1.01 1 300 0.0033 1.01 1.01 Frecuencias ases Categorias o clases fi xi i fa 2 2.0 2 1 2.1 3 5 2.2 8 8 2.3 16 14 2.4 30 28 2.5 58 37 2.6 95 44 2.7 139 36 2.8 175 38 2.9 213 30 3.0 243 26 3.1 269 14 3.2 283 8 3.3 291 6 3.4 297 2 3.5 299 0 3.6 299 0 3.7 299 1 3.8 300
9.
Frecuencias Categorias o clases xi 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 fi 2 1 5 8 14 28 37 44 36 38 30 26 14 8 6 2 0 0 1 fai 2 3 8 16 30 58 95 139 175 213 243 269 283 291 297 299 299 299 300 fri 0.0067 0.0033 0.0167 0.0267 0.0467 0.0933 0.1233 0.1467 0.1200 0.1267 0.1000 0.0867 0.0467 0.0267 0.0200 0.0067 0.0000 0.0000 0.0033 frai 0.67% • 1.00% 2.67% 5.33% 10.00% 19.33% 31.67% 46.33% 58.33% 71.00% 81.00% 89.67% 94.33% 97.00% 99.00% 99.67% 99.67% 99.67% 100.00% Medidas
de tendencia central Frecuencia y dispersion Absoluta fix i |x i-x|f i (x i-x) 2 fi 4 1.59 1.26 2.1 0.69 0.48 11 2.97 1.76 18.4 3.95 1.95 33.6 5.51 2.17 70 8.22 2.41 96.2 7.17 1.39 118.8 4.12 0.39 100.8 0.23 0.00 110.2 4.04 0.43 90 6.19 1.28 80.6 7.96 2.44 44.8 5.69 2.31 26.4 4.05 2.05 20.4 3.64 2.21 7 1.41 1.00 0 0.00 0.00 0 0.00 0.00 3.8 1.01 1.01
10.
Medidas de tendencia
central Mínimo = 2.0 Frecuencias Categorias o clases y dispersion Cuartil 1 = 2.45 2 xi f i Cuartil fri = 2.90 i fai fra fix i |x i-x|f i (x i-x) 2 f i 2.0 2 Cuartil 3 = 3.35 2 0.0067 0.67% 4 1.59 1.26 • Máximo = 3.8 2.1 1 3 0.0033 1.00% 2.1 0.69 0.48 2.2 5 8 0.0167 2.67% 11 2.97 1.76 Rango Inter-cuartilico (RI) 2.3 8 16 0.0267 5.33% 18.4 3.95 1.95 2.4 14 30 0.0467 10.00% 33.6 5.51 2.17 Q1 2.5 28 58 0.0933 19.33% 70 8.22 2.41 2.6 37 95 0.1233 31.67% 96.2 7.17 1.39 2.7 44 139 0.1467 46.33% 118.8 4.12 0.39 2.8 36 175 0.1200 58.33% 100.8 0.23 0.00 Q2 2.9 38 213 0.1267 71.00% 110.2 4.04 0.43 3.0 30 243 0.1000 81.00% 90 6.19 1.28 3.1 26 269 0.0867 89.67% 80.6 7.96 2.44 3.2 14 283 0.0467 94.33% 44.8 5.69 2.31 3.3 8 291 0.0267 97.00% 26.4 4.05 2.05 3.4 6 297 0.0200 99.00% 20.4 3.64 2.21 Q3 3.5 2 299 0.0067 99.67% 7 1.41 1.00 3.6 0 299 0.0000 99.67% 0 0.00 0.00 3.7 0 299 0.0000 99.67% 0 0.00 0.00 3.8 1 300 0.0033 100.00% 3.8 1.01 1.01 Valores Atípicos
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