You are Here: Home >< Maths

# Regression watch

1. A8. Below are the results of two regression models: Regression A: y ≈ -2x1; R2 = 0.63 Regression B: y ≈ 1.5x2 ; R2 = 0.44
State if each of the following statements is true or false:
(a) The correlation coefficient between y and x1 is 0.63. [1 mark]
(b) If x2 changes from 1 to 3, then according regression B, y will change by 3. [1 mark]
(c) If x1 decreases by 0.5, then y will decrease by 1.
2. (Original post by Deannnn97)
A8. Below are the results of two regression models: Regression A: y ≈ -2x1; R2 = 0.63 Regression B: y ≈ 1.5x2 ; R2 = 0.44
State if each of the following statements is true or false:
(a) The correlation coefficient between y and x1 is 0.63. [1 mark]
(b) If x2 changes from 1 to 3, then according regression B, y will change by 3. [1 mark]
(c) If x1 decreases by 0.5, then y will decrease by 1.
What do you think?

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: July 27, 2016
Today on TSR

### The most controversial member on TSR?

Who do you think it is...

### Is confrontation required?

Discussions on TSR

• Latest
Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE