Friday

August 22, 2014

August 22, 2014

Posted by **Celest** on Thursday, July 14, 2011 at 9:21pm.

You are given the following data.

Number of Absences Final

Grade

0 99

1 94

2 79

3 73

4 68

5 53

- Find the correlation coefficient for the data.

- Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.

- stats -
**MathGuru**, Friday, July 15, 2011 at 7:26pmUsing an online calculator, I have the following data:

6 data pairs (x,y):

( 0.00 , 99.0 ); ( 1.00 , 94.0 ); ( 2.00 , 79.0 ); ( 3.00 , 73.0 ); ( 4.00 , 68.0 ); ( 5.00 , 53.0 );

y = a + bx where:

a= 100

b= -8.97

r = -0.986

In the regression equation, substitute 3.5 for x and solve for y to predict the final grade.

I hope this helps.

**Related Questions**

Calculus: Area - Can someone look at my work and see what i did wrong. I did ...

Algebra - i have this question i have been working on two days no and cannot get...

Unknown - Can someone please help me with crt 205 week 5 assignment ( Identify ...

Maths - can someone please help i think i have the solution but i keep confusing...

Algebra - - ok... we keep getting this one wrong: Solve the following equation ...

math - can someone give me proof that a negative number times a negative number ...

Equations - find the slope of the line containing the following points: (5/6 , -...

calculus - can someone please explain why the answer to this is negative ...

chemistry - I have been at this question for at least three hours now. Consider ...

PLEASE HELP ME! PLEASE! - 1 )3x + 8y = 1 7x + 4y = 17 Answer: (3,1) 2) -3x + 5y...