EJERCICIO ESTADÍSTICA EN INGLES

STATISTICAL EXPERIENCE IN ENGLISH


1. The data given below correspond to the weights in kg of eighty people:

(A) Obtain a data distribution at amplitude 5 intervals, the first
Range [50; 55].

(B) Calculate the percentage of people weighing less than 65 kg.

(C) How many people have weight greater than or equal to 70 kg but less than 85?



SOLUTION:
(A) Since the aim is to distribute pooled data, we must first obtain the Corresponding intervals, placing the data in their respective places:

(B) Observing the column of accumulated frequencies it is deduced that there are N3 = 26 individuals

Whose weight is less than 65 kg, which in terms of percentage correspond to:

26   = 100 32.5%
80

(C) The number of individuals weighing between 70 and 85 kg is:

N5 + n6 + n7 = 14 + 7 + 3 = 24

Which is equivalent to: N7 - N4 = 80 - 56 = 24