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PRMIA Exam 8002 Topic 1 Question 82 Discussion

Actual exam question for PRMIA's Mathematical Foundations of Risk Measurement :II exam
Question #: 82
Topic #: 1
[All Mathematical Foundations of Risk Measurement :II Questions]

You are to perform a simple linear regression using the dependent variable Y and the independent variable X (Y = a + bX). Suppose that cov(X,Y)=10, var(X)= 5, and that the mean of X is 1 and the mean of Y is 2. What are the values for the regression parameters a and b?

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Suggested Answer: D

by Tarra at Jun 21, 2024, 05:36 PM

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Emiko
28 days ago
Hold up, did they just ask for the regression parameters? I think I'm missing something here.
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Kris
29 days ago
This is easy peasy lemon squeezy. I got this in the bag! Time to show off my stats skills and impress the examiner.
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Freida
8 days ago
Nice job! That's the correct answer.
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Glendora
20 days ago
A) b=0.5, a=2.5
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Celestine
1 months ago
Wait, is this a trick question? I better double-check my work. Can't have the exam proctors pulling a fast one on me!
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Goldie
1 months ago
Alright, time to put my math skills to the test! This should be a piece of cake.
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Heidy
1 days ago
A) b=0.5, a=2.5
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Nobuko
2 days ago
That's correct! Good job!
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Della
14 days ago
I think the answer is A) b=0.5, a=2.5
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Dick
19 days ago
A) b=0.5, a=2.5
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Adelina
2 months ago
I think the answer is D) b=2, a=0 based on the means of X and Y
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Louann
2 months ago
I'm leaning towards C) b=2, a=4 because of the covariance and variance values
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Belen
2 months ago
I disagree, I believe the answer is B) b=0.5, a=1.5
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Felix
2 months ago
I think the answer is A) b=0.5, a=2.5
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Anisha
2 months ago
Hmm, this seems like a straightforward linear regression problem. Let me think through this step-by-step.
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Milly
1 months ago
C) b=2, a=4
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Jina
2 months ago
B) b=0.5, a=1.5
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Amina
2 months ago
A) b=0.5, a=2.5
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