Questions: Which of the following is an example of selection bias? (1 point) asking a random selection of pet store customers how much they spend on vet bills annually asking book store customers for volunteers to provide a review of a new book asking sixth graders how much time they spend on homework each night asking every fourth ticket holder about their experience at a basketball game

Which of the following is an example of selection bias? (1 point)
asking a random selection of pet store customers how much they spend on vet bills annually
asking book store customers for volunteers to provide a review of a new book
asking sixth graders how much time they spend on homework each night
asking every fourth ticket holder about their experience at a basketball game

Transcript text: Which of the following is an example of selection bias? (1 point) asking a random selection of pet store customers how much they spend on vet bills annually asking book store customers for volunteers to provide a review of a new book asking sixth graders how much time they spend on homework each night asking every fourth ticket holder about their experience at a basketball game

Solution

Solution Steps

To determine which scenario is an example of selection bias, we need to identify the situation where the sample is not representative of the general population due to the method of selection.

Step 1: Identify the Scenarios

We have four scenarios to evaluate for selection bias:

Asking a random selection of pet store customers about their vet bills.
Asking book store customers for volunteers to provide a review of a new book.
Asking sixth graders how much time they spend on homework each night.
Asking every fourth ticket holder about their experience at a basketball game.

Step 2: Analyze Each Scenario

Scenario 1: This is a random selection, which is likely representative of the general population of pet store customers.
Scenario 2: This involves asking for volunteers, which can lead to a biased sample as only those with strong opinions may respond.
Scenario 3: This could be representative of sixth graders, but it may not capture the full range of experiences.
Scenario 4: This method of selection (every fourth ticket holder) is systematic and can be representative, assuming ticket holders are similar.

Step 3: Determine Selection Bias

Among the scenarios, Scenario 2 is the only one that introduces selection bias because it relies on volunteers, which skews the sample towards those who are more likely to have strong opinions about the book.