"PERCENTILES" Ejercicio 29 - Enero - 2013

R Perceptibles

Clases	Marca  de clase	Frecuencia	Frecuencia acumulada	Limites reales
83-92	87.5	5	5	82.5-92.5
93-102	97.5	3	8	92.5-102.5
103-112	107.5	11	19	102.5-112.5
113-122	117.5	24	43	112.5-122.5
123-132	127.5	7	50	122.5-132.5
133-142	137.5	7	57	132.5-142.5
143-152	147.5	3 60	60	142.5-152.5

Rango

139-83=6

K=1+3.322 log₁₀ (60)=6.9≈7

W=

P₁₀=92.5+  (10)=94.5

(60) (.10) =6

P₂₀=107.5+ (10)=106.13

(60) (.20)=12

P₄₇=112.5+24(10)=116.3

(60) (.47)=28.2

P₆₈=122.5+ (10)=119.35

(60) (.68)=40.8

P₉₂=132.5+ (10)=139.92

(60) (.92)=55.2