¿estadistica descriptiva ayuda porfavor?

blanquita

Necesito entender este ejercicio y saber algunas cosas:

Dados los siguientes datos de remuneraciones (en miles)

$165-175-180-200-270-310-270-195-198

-240-255-236-248-300-315-305-242-201

-276-288

genera una TDF con 10 intervalos

supremo= 315 Rango= 315-165 = 150

infimo= 165

Ampl. interna= 150:10= 15

165-180

180-195

195-210

210-225

225-240

240-255

255-270

270-285

285-300

300-315

quiero saber como se calcula Fi,Hi,Fi%,Fi,Hi,Fi%

se los agradeceré muchisimo ya que el jueves tengo prueba y no se como calcular eso, muchisimas gracias.

xyz

Calculamos primero las fi (frecuencias absolutas) es decir hacemos un recuento de cada categoria

X --- fi

165-180 --- 2

180-195 --- 1

195-210 --- 4

210-225 --- 0

225-240 --- 1

240-255 --- 3

255-270 --- 1

270-285 --- 3

285-300 --- 1

300-315 --- 4

hi son las frecuencias relativas es decir fi/N = fi/20

X --- fi --- hi

165-180 --- 2 --- 2/20= 0.1

180-195 --- 1 --- 1/20=0.05

195-210 --- 4 --- 4/20=0.2

210-225 --- 0 --- 0/20=0

225-240 --- 1 --- 1/20=0.05

240-255 --- 3 --- 3/20=0.15

255-270 --- 1 --- 1/20=0.05

270-285 --- 3 --- 3/20=0.15

285-300 --- 1 --- 1/20=0.05

300-315 --- 4 --- 4/20=0.2

X --- fi --- hi

165-180 --- 2 --- 0.1

180-195 --- 1 --- 0.05

195-210 --- 4 --- 0.2

210-225 --- 0 --- 0

225-240 --- 1 --- 0.05

240-255 --- 3 --- 0.15

255-270 --- 1 --- 0.05

270-285 --- 3 --- 0.15

285-300 --- 1 --- 0.05

300-315 --- 4 --- 0.2

Fi son las frecuencias absolutas acumuladas (sumando las anteriores fi y la de la categoria)

X --- fi --- hi --- Fi

165-180 --- 2 --- 0.10 --- 2

180-195 --- 1 --- 0.05 --- 3

195-210 --- 4 --- 0.20 --- 7

210-225 --- 0 --- 0.00 --- 7

225-240 --- 1 --- 0.05 --- 8

240-255 --- 3 --- 0.15 --- 11

255-270 --- 1 --- 0.05 --- 12

270-285 --- 3 --- 0.15 --- 15

285-300 --- 1 --- 0.05 --- 16

300-315 --- 4 --- 0.20 --- 20

Hi son las frecuencias relativas hi acumuladas (las anteriores y las de la categoria actual)

X --- fi --- hi --- Fi -- Hi

165-180 --- 2 --- 0.10 --- 2 --- 0.10

180-195 --- 1 --- 0.05 --- 3 --- 0.15

195-210 --- 4 --- 0.20 --- 7 --- 0.35

210-225 --- 0 --- 0.00 --- 7 --- 0.35

225-240 --- 1 --- 0.05 --- 8 --- 0.40

240-255 --- 3 --- 0.15 --- 11 --- 0.55

255-270 --- 1 --- 0.05 --- 12 --- 0.60

270-285 --- 3 --- 0.15 --- 15 --- 0.75

285-300 --- 1 --- 0.05 --- 16 --- 0.80

300-315 --- 4 --- 0.20 --- 20 --- 1

hi y HI se pueden expresar en procentaje

X --- fi --- hi% --- Fi -- Hi%

165-180 --- 2 --- 10% --- 2 --- 10%

180-195 --- 1 --- 5% --- 3 --- 15%

195-210 --- 4 --- 20% --- 7 --- 35%

210-225 --- 0 --- 0% --- 7 --- 35%

225-240 --- 1 --- 5% --- 8 --- 40%

240-255 --- 3 --- 15% --- 11 --- 55%

255-270 --- 1 --- 5% --- 12 --- 60%

270-285 --- 3 --- 15% --- 15 --- 75%

285-300 --- 1 --- 5% --- 16 --- 80%

300-315 --- 4 --- 20% --- 20 --- 100%

Saludos.