## How do you find the acute angle between two regression lines?

1. If “θ” be the angle between two regression lines and regression coefficients are bxx​=1. 6 and bxy​=4, then find the value of tanθ. Medium.
2. If we have bxy​=0. 4 and byx​=1. 6, then the angle θ between two regression lines is. Hard.
3. If we have bxy​=32​ and byx​=0. 5, then the angle θ between two regression lines is. Hard.

## What is the angle between the two regression lines?

90∘
Assertion – The angle between two regression lines is 90∘ then r=0. , where r is correlation coefficient.

Are equal to 1 the angle between two regression line is?

Q. If r = 1, the angle between the two regression lines is…………………….
B. Thirty degree
C. Zero degree
D. Sixty degree

At what point do two lines intersect regression?

Answer: If X = 0, both the variables are independent and they will cross each other at right angle. When the regression lines intersect each other at the point of means of X and Y, and if a perpendicular line is drawn from that point to the X axis, it will touch the axis on the mean value of X.

### Why are there in general two regression lines?

In regression analysis, there are usually two regression lines to show the average relationship between X and Y variables. It means that if there are two variables X and Y, then one line represents regression of Y upon x and the other shows the regression of x upon Y (Fig. 35.2).

### When two regression lines coincide then the value of R is?

Answer = The two lines of regression coincide i.e. become identical when r = –1 or 1 or in other words, there is a perfect negative or positive correlation between the two variables under discussion. (v) The two lines of regression are perpendicular to each other when r = 0.

When two regression line coincide then the value of R is?

What are the limits of two regression coefficients?

No limit. Must be positive. One positive and the other negative. Product of the regression coefficient must be numerically less than unity.

#### How do you find two regression lines?

The formula for the best-fitting line (or regression line) is y = mx + b, where m is the slope of the line and b is the y-intercept.

#### What happens when two regression lines coincide?

The two lines of regression coincide i.e. become identical when r = –1 or 1 or in other words, there is a perfect negative or positive correlation between the two variables under discussion. Property 5 : The two lines of regression are perpendicular to each other when r = 0.

What are the limits of the two regression coefficients?

What is the angle between two lines of regression?

What is a Linear Regression Model?

## Which is greater an acute or a right angle?

Angles powerpoint Right-Angle A right-angle is 90°. Acute-Angles An acute angle is less than 90°. Obtuse-Angles An obtuse angle is greater than 90° and less than 180°.

## Which is an example of a right angle?

Angles powerpoint Right-Angle A right-angle is 90°. These are examples of right-angles: Two lines that meet at a right angle are perpendicular. Acute-Angles An acute angle is less than 90°. These are examples of acute angles: 20° 40° 75° © Copyright 2008, SparkleBox Teacher Resources (www.sparklebox.co.uk)

Which is greater a line or an angle?

Lines! Angles! forms a square corner. forms a line. Is 180 degrees. is less than a right angle. Is less than 90 degrees is greater than a right angle and less than a straight angle. Is more than 90 degrees & less than 180 degrees