Q3-20BSC

Question

In Exercises 9–20, identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster. 

 

Highway Strength The New York State Department of Transportation evaluated the quality of the New York State Thruway by testing core samples collected at regular intervals of 1 mile.

Step-by-Step Solution

Verified
Answer

Systematic sampling 

1Step 1: Given information

The samples are collected to determine the quality of the New York State Thruway. The samples are collected after every one mile.

2Step 2: Identify the method of sampling

Systematic sampling refers to the method of sample collection where the first sample is collected at random from the population and the subsequent samples are gathered following a certain pattern.

 

In this case, the samples are taken at a regular gap of one mile, assuming the first to be taken randomly from the population.

 

Thus, the sampling method is systematic sampling.