# help with a problem

• Mar 6th 2011, 11:38 AM
rocky2011
help with a problem
from the table x = 1,2,3,4 and y= -1/4, -1/2, -3/4 and ? ( in table format)

X Y
1 ( -1/4)
2 ( -1/2)
3 ( -3/4)
4 ( ?)

1. would the correlation between x and y be positive or negative?

2. what is the missing value of x?

3. how would the values of this table be intrepreted in terms of linear regression?

4. if a 'line of best fit' is placed among these points plotted on a coordinate system, would the slope be positive or negative?

• Mar 6th 2011, 12:58 PM
pickslides
Have you plotted the points using a scatterplot?

I would say the correlation is negative and do you mean the missing y-value?
• Mar 6th 2011, 03:01 PM
mr fantastic
Quote:

Originally Posted by rocky2011
from the table x = 1,2,3,4 and y= -1/4, -1/2, -3/4 and ? ( in table format)

X Y
1 ( -1/4)
2 ( -1/2)
3 ( -3/4)
4 ( ?)

1. would the correlation between x and y be positive or negative?

2. what is the missing value of x?

3. how would the values of this table be intrepreted in terms of linear regression?

4. if a 'line of best fit' is placed among these points plotted on a coordinate system, would the slope be positive or negative?