2 d2 ejercicio 4 durante el mes de julio del 2019 en

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( 𝑋𝑖− 𝑋)2 D2 = ? EJERCICIO 4 Durante el mes de julio del 2019 en una ciudad sean registrado las siguientes temperaturas máximas. 32,31,28,29,33,32,31,30,31,31,27,28,29,30,32,31,31,30,30,29,29,30,30,31,30,31,34, 33,33,29,29 27 32 28 32 28 32 29 33 29 33 29 33 29 34 29 29 30 30 30 30 30 30 30 31 31 31 31 31 31 31 31 fr% = 31 𝟏+𝟑.𝟑𝟑𝟐 𝒍𝒐𝒈 𝟑𝟏 K= regla de sturge = X Fa fr Fa Fr % 27 1 0.032 1 3.22 28 2 0.064 3 6.45 29 6 0.193 9 19.35 30 7 0.225 16 22.58 31 8 0.258 24 25.80 32 3 0.096 27 9.67 33 3 0.096 30 9.67 34 1 0.032 31 3.22 31 0.981 99.96 100%
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𝟓.𝟗? fa= N R= V mey – V min 31 EJERCICIO 5 SE OBTIENEN LOS SIGUIENTES DATOS: 3,15,24,28.33,35,38,42,43,38,36,34,29,25,17,7,34,36,39,44,31,26,20,11,13,22,27,47 ,39,37,34,32,35,28,38,41,48,15,32,13 3 34 7 34 11 35 13 35 13 36 15 36 15 37 17 38 20 38 22 38 24 39 25 39 26 41 27 42 28 43 28 44 29 47 31 48 32 32 33 34 fa X (3-13) 3 1.5 (13-22) 6 3 (22-28) 5 2.5 (28-32) 4 2 (32-35) 6 3 (35-38) 5 2.5 (38-41) 5 2.5 (41-48) 6 3 40 20
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1,610 100 =16.1 2 = (𝑋𝑖 − 𝑋)2.𝑓? ? EJERCICIO 6 Los resultados de unas tes de actitud tomado a un grupo de 100 personas se acomodaron en la siguiente tabla X Fa Marca de clase 20.25-25.5 28 23 15.5-20.5 32 18 10.5-15.5 21 13 5.5-10.5 12 8 0.5-5.5 7 3 100 65 X = (23𝑥 28) +(18𝑥32) +(13𝑥21) +(8𝑥12) +(3𝑥7) 100 X =16.1
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MEDIDAS DE TENDENCIA CENTRAL EJERCICIO 6 De los 220 trabajadores de una empresa han llegado a trabajar 10 minutos pronto,65, 5 minuto prontos 116en su hora 119 ,5 minutos tarde 16 y el resto 10 minutos tarde, forma la tabla de frecuencia absolutas y relativas ¿crees que el director debe tomar alguna medida general para que lleguen a su hora? X fa fr Fr% 10min pronto 65 155 70.45 5 min pronto 116 104 47.27 En su hora 119 101 45.90 5 min tarde 16 204 92.72 10 min ? El resto llega 10 minuto tarde son 101 y se divide con el número total que son 220 y se multiplica por 100 para sacar el porcentaje de cuantos trabajadores llegan tarde. En este caso el director no tendría que tomar alguna medida
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