DA0-002 Data Analysis Practice Question
In a linear regression model predicting house prices, the coefficient for the number of bedrooms is $30,000 and the intercept is $50,000. If a house has 3 bedrooms, what is the predicted price?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
$140,000
Using y = mx + b, predicted price = 30000 * 3 + 50000 = $140,000.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
$80,000
Why it's wrong here
This would be intercept + 1*coefficient.
- ✗
$150,000
Why it's wrong here
Incorrect multiplication.
- ✗
$90,000
Why it's wrong here
Incorrect calculation.
- ✓
$140,000
Why this is correct
Correct: 30000*3 + 50000 = 140000.
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