MATH 225 WEEK 1 TEST | QUESTIONS AND ANSWERS | 2026 UPDATE | SCORE A+ |WITH COMPLETE SOLUTIONS.

,
, MATH 225 WEEK 1 TEST | QUESTIONS
AND ANSWERS | 2026 UPDATE | SCORE A+
|WITH COMPLETE SOLUTIONS.



SECTION 1: SAMPLING METHODS (Questions 1-10)




Question 1
A television station plans to send a crew to a polling center on election day.
Because they do not have time to interview each individual voter, they
decide to count voters leaving the polling location and ask every 20th voter
for an interview. What type of sampling is this?

A) Simple random sampling
B) Systematic sampling
C) Stratified sampling
D) Cluster sampling

Answer: B) Systematic sampling

Rationale: Systematic sampling involves selecting every kth individual from
a population after a random starting point. In this case, selecting every 20th
voter is systematic sampling. This method is efficient but requires that the
population order is not periodic in a way that introduces bias .

Section: Sampling Methods - Systematic Sampling
Source: MATH 225N Week 1 Assignment: Comparing Sampling Methods




Question 2
In order to study the shoe sizes of people in his town, Billy samples the