How many pupils from each year should be selected to give a stratified sample of 10%?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter0: Preparing For Algebra
Section0.11: Simple Probability And Odds
Problem 13E
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Stratified sampling exercise
1. The table below shows the number of pupils in Years 11-13.
• How many pupils from each year should be selected to give a stratified sample of 10%?
Year
11
12
13
Number of pupils
201
119
98
10% sample
Transcribed Image Text:Stratified sampling exercise 1. The table below shows the number of pupils in Years 11-13. • How many pupils from each year should be selected to give a stratified sample of 10%? Year 11 12 13 Number of pupils 201 119 98 10% sample
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