Review Worksheet: Blast from the past: Chapter Three!

1. _________ Calculate the slope of the least squares line for the current and voltage.

2. _________ Calculate the y-intercept of the least squares line for the for the current and voltage data.

3. _________ What does of the sign of the slope tell us about this data? That is, what type of correlation is this?

4. _________ What is the predicted voltage for a current of 4 amps (for this calculation, presume that the relationship remains linear beyond 2 amps)?

5. _________ What is the predicted current for a voltage of 20 volts (for this calculation, presume that the relationship remains linear beyond 10 volts)?

6. _________ Calculate the linear correlation coefficient r for the the current and voltage.

7. _________ Is the correlation none, low, moderate, high, or perfect?

8. _________ Calculate the coefficient of determination.

9. __________________ What does the coefficient of determination tell us about the relationship between per the current and voltage?

10. __________________ Does the relationship appear to be a linear relationship between the current and voltage?

11. __________________ There are actually two functions involved, one being a linear component. Do you have any idea what the other function might be (nota bene: it helps if you took MS 101...).

Information Systems

2004-04-28T08:39:22

Information Systems