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

- Free Preparation Discussions

PRMIA Exam 8007 Topic 4 Question 80 Discussion

Actual exam question for PRMIA's 8007 exam

Question #: 80
Topic #: 4

[All 8007 Questions]

A simple linear regression is based on 100 data points. The total sum of squares is 1.5 and the correlation between the dependent and explanatory variables is 0.5. What is the explained sum of squares?

A0.75

B1.125

C0.3333

D0.375

Show Suggested Answer

Suggested Answer: D

by Major at Aug 28, 2024, 05:23 PM

Limited Time Offer

25%

Off

Get Premium 8007 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Elke

2 months ago

That makes sense, maybe it is 0.75 after all.

upvoted 0 times

...

Leah

2 months ago

But the correlation is 0.5, so it should be closer to 0.5.

upvoted 0 times

...

Virgie

2 months ago

Ah, yes, the old 'Why did the linear regression model cross the road?' joke. Classic. But I'm going with option D - 0.375. It just seems more intuitive to me.

upvoted 0 times

Deja

26 days ago

I agree with you, option D) 0.375 seems like the most logical choice.

upvoted 0 times

...

Howard

1 months ago

I believe it's C) 0.3333, that's my best guess.

upvoted 0 times

...

Billi

2 months ago

I'm leaning towards B) 1.125, but I'm not entirely sure.

upvoted 0 times

...

Denny

2 months ago

I think it's A) 0.75, based on the formula for explained sum of squares.

upvoted 0 times

...

...

Adelina

2 months ago

I agree with Sharen. The formula is just too straightforward to mess up. Although, I did hear a funny joke about linear regression the other day...

upvoted 0 times

Julie

1 months ago

C) 0.3333

upvoted 0 times

...

Cherry

2 months ago

A) 0.75

upvoted 0 times

...

...

Elke

2 months ago

I disagree, I believe it is 1.125.

upvoted 0 times

...

Sharen

2 months ago

Wait, isn't the explained sum of squares calculated as the correlation squared times the total sum of squares? That would make it 0.3333.

upvoted 0 times

...

Mitsue

2 months ago

Hmm, I think it might be 1.125. The correlation is 0.5, so the explained sum of squares should be half of the total sum of squares.

upvoted 0 times

Marguerita

2 months ago

B) 1.125

upvoted 0 times

...

Melynda

2 months ago

A) 0.75

upvoted 0 times

...

...

Leah

3 months ago

I think the explained sum of squares is 0.75.

upvoted 0 times

...

Jesusa

3 months ago

I'm pretty sure the explained sum of squares is 0.75. That's what I learned in my statistics class.

upvoted 0 times

Launa

2 months ago

Yes, it is 0.75.

upvoted 0 times

...

Isabella

2 months ago

I agree, the explained sum of squares is 0.75.

upvoted 0 times

...

Billi

2 months ago

I think it's 0.75.

upvoted 0 times

...

...