posted by Jennifer on .
For the table that follows, answer the following questions:
- Would the correlation between x and y in the table above be positive or negative?
- Find the missing value of y in the table.
- How would the values of this table be interpreted in terms of linear regression?
- If a “line of best fit” is placed among these points plotted on a coordinate system, would the slope of this line be positive or negative?
Positive correlation means both variables increase/decrease together. Negative correlation means one variable increases while the other decreases.
What is the consistent difference between the y values to determine the missing value?
How good is the predictability of y from x?
Slope value (±) is the same as the correlation value (±).