BlackFriday 2024! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

PRMIA Exam 8002 Topic 1 Question 82 Discussion

Actual exam question for PRMIA's 8002 exam
Question #: 82
Topic #: 1
[All 8002 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?

Show Suggested Answer Hide Answer
Suggested Answer: D

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

Limited Time Offer

25%

Off

Get Premium 8002 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel
Emiko
4 months ago
Hold up, did they just ask for the regression parameters? I think I'm missing something here.
upvoted 0 times
...
Kris
4 months ago
This is easy peasy lemon squeezy. I got this in the bag! Time to show off my stats skills and impress the examiner.
upvoted 0 times
Delsie
3 months ago
You're on a roll with those stats skills!
upvoted 0 times
...
Rolland
3 months ago
Thanks! I knew I had it right.
upvoted 0 times
...
Freida
3 months ago
Nice job! That's the correct answer.
upvoted 0 times
...
Glendora
3 months ago
A) b=0.5, a=2.5
upvoted 0 times
...
...
Celestine
4 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!
upvoted 0 times
...
Goldie
4 months ago
Alright, time to put my math skills to the test! This should be a piece of cake.
upvoted 0 times
Freeman
2 months ago
Yes, that's correct! Good job!
upvoted 0 times
...
Nobuko
2 months ago
I think the answer is A) b=0.5, a=2.5
upvoted 0 times
...
Heidy
3 months ago
A) b=0.5, a=2.5
upvoted 0 times
...
Nobuko
3 months ago
That's correct! Good job!
upvoted 0 times
...
Della
3 months ago
I think the answer is A) b=0.5, a=2.5
upvoted 0 times
...
Dick
3 months ago
A) b=0.5, a=2.5
upvoted 0 times
...
...
Adelina
5 months ago
I think the answer is D) b=2, a=0 based on the means of X and Y
upvoted 0 times
...
Louann
5 months ago
I'm leaning towards C) b=2, a=4 because of the covariance and variance values
upvoted 0 times
...
Belen
5 months ago
I disagree, I believe the answer is B) b=0.5, a=1.5
upvoted 0 times
...
Felix
5 months ago
I think the answer is A) b=0.5, a=2.5
upvoted 0 times
...
Anisha
5 months ago
Hmm, this seems like a straightforward linear regression problem. Let me think through this step-by-step.
upvoted 0 times
Milly
4 months ago
C) b=2, a=4
upvoted 0 times
...
Jina
4 months ago
B) b=0.5, a=1.5
upvoted 0 times
...
Amina
5 months ago
A) b=0.5, a=2.5
upvoted 0 times
...
...

Save Cancel