Answer only number 3

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Answer only number 3

Task: Identify the population, parameter of interest, the sampling frame, the sample,
the sampling method, and any potential sources of biases in the following
studies:
1. A question posted on the website of a daily newspaper in the Philippines asked
visitors of the site to indicate their voter preference for the next presidential
election.
2. In March 2015, Pulse Asia reported that the leading urgent concerns of Filipinos
are inflation control (46%), the increase of workers' pay (44%), and the fight
against government corruption (40%). On the other hand, Filipinos are least
concerned with national territorial integrity (5%), terrorism (5%), and charter
change (4%). The nationwide survey was conducted from March 1 to 7, 2015
with 1,200 respondents.
3. A sample survey of persons with disability (PWDS) was designed to be
representative of PWDS, by making use of PWD registers from local government
units, but an assessment suggested the registers were severely undercovering
PWDS. The design was adjusted to make use of snowball sampling where existing
sampled PWDS would identify other future subjects from among their
acquaintances. The study attempted to examine the proportion of PWDS who
were poor.
Transcribed Image Text:Task: Identify the population, parameter of interest, the sampling frame, the sample, the sampling method, and any potential sources of biases in the following studies: 1. A question posted on the website of a daily newspaper in the Philippines asked visitors of the site to indicate their voter preference for the next presidential election. 2. In March 2015, Pulse Asia reported that the leading urgent concerns of Filipinos are inflation control (46%), the increase of workers' pay (44%), and the fight against government corruption (40%). On the other hand, Filipinos are least concerned with national territorial integrity (5%), terrorism (5%), and charter change (4%). The nationwide survey was conducted from March 1 to 7, 2015 with 1,200 respondents. 3. A sample survey of persons with disability (PWDS) was designed to be representative of PWDS, by making use of PWD registers from local government units, but an assessment suggested the registers were severely undercovering PWDS. The design was adjusted to make use of snowball sampling where existing sampled PWDS would identify other future subjects from among their acquaintances. The study attempted to examine the proportion of PWDS who were poor.
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