Math  /  Data & Statistics

QuestionDetermine whether an observational or experimental study is appropriate to address the following statement. A car wash operator wants to find out the average age of his clientele.
Answer
Observational Experimental

Studdy Solution

STEP 1

What is this asking? We need to figure out if it's better to *observe* customers or do an *experiment* to find their average age. Watch out! Don't mix up *observational* studies (just looking) and *experimental* studies (testing something).

STEP 2

1. Understand Observational Studies
2. Understand Experimental Studies
3. Choose the Right Approach

STEP 3

Observational studies are like being a detective!
You're just *watching* and *recording* what's already happening.
You're not changing anything.
Think of it like bird watching – you're not interfering with the birds, just observing them!

STEP 4

Experimental studies are all about *testing* something.
You're changing something and seeing what happens.
Imagine you're a scientist testing a new fertilizer – you'd give some plants the fertilizer and others not, then compare how they grow.

STEP 5

To find the average age of car wash customers, we just need to *observe* them.
We don't need to change anything or test anything.
We can simply ask customers their age or estimate their age as they use the car wash.

STEP 6

An experiment wouldn't make sense here.
What would we even test?
Giving some customers a different soap and seeing if it affects their age?
That doesn't make sense!

STEP 7

The appropriate study is **observational**.

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