SAS A00-240 Exam - Topic 8 Question 129 Discussion

Actual exam question for SAS's A00-240 exam

Question #: 129
Topic #: 8

[All A00-240 Questions]

A linear model has the following characteristics:

* A dependent variable (y)

* One continuous variable (x1)

* One categorical (1 with 3 levels) predictor variable and an interaction term (1 by x1)

How many parameters, including the intercept, will be estimated for this model?

Enter your numeric answer in the space below.

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Suggested Answer: A

by Inocencia at Jun 26, 2026, 04:29 PM

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5 days ago

Totally agree, it adds up to 7!

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10 days ago

There are 7 parameters total.

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15 days ago

I practiced a similar question where we had to count parameters, and I think it was about 6 or 7 total, including the interaction.

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20 days ago

If I recall correctly, the categorical variable has 3 levels, so we might need to subtract one for the reference level, right?

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26 days ago

I'm not entirely sure, but I remember something about interaction terms adding complexity. Does that mean we add more parameters?

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1 month ago

I think we have to count the intercept plus the number of levels in the categorical variable and the continuous variable.

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