Explain why given does not provide convincing evidence

Reference no: EM131400551

Suppose r² = .95

(a) Explain why this does not provide convincing evidence that the least squares line provides a good fit to a scatterplot of the points.

(b) If the least squares line provides a poor fit, what does this say about using Y^ˆversus Y^¯ to estimate Y .

Reference no: EM131400551

Questions Cloud

What happens to the correlation between x and y : Consider a least squares regression line Y = .5X +2+e, and where X and e are independent and both have a standard normal distribution. What happens to the correlation between X and Y if instead Y = .5X +2+2e? Hint: What happens to the residuals.

How do teen courts function : What are teen courts?What types of juvenile offenders are the best types of clients for teen courts?How do teen courts function?What are the success rates of teen courts for reducing youth recidivism?

Conclude that the two variables under study are independent : Imagine a study where the correlation between some amount of an experimental drug and liver damage yields a value for r close to zero and the hypothesis H0: ρ = 0 is not rejected. Why might it be unreasonable to conclude that the two variables und..

Existence of an unemployment insurance system : How could the existence of an unemployment insurance system or other transfer programs have reduced the severity of the Great Depression?

Explain why given does not provide convincing evidence : Explain why this does not provide convincing evidence that the least squares line provides a good fit to a scatterplot of the points.

What is standard probation : What is standard probation? What are some of its characteristics? What are some of the conditions of standard probation?

Key macroeconomic policy tool : 1. Controlling the money supply is a key macroeconomic policy tool. Explain how the Fed controls the money supply and what separates the balance sheet of the Fed from that of ordinary commercial banks.

Predict whether pearsons correlation increase or decrease : Note that this restricts the range of X values. Without looking at the data, can you predict whether Pearson's correlation will increase or decrease after these points are removed?

Discuss role of conflict in criminal justice organization : Discuss the role of "Conflict" in Criminal Justice Organizations.

User Account

All Pages