# Question

The National Oceanic and Atmospheric Administration publishes temperature information of cities around the world in Climates of the World. A random sample of 50 cities gave the data on average high and low temperatures in January shown on the Weiss Stats CD.

a. Obtain and interpret the standard error of the estimate.

b. Obtain a residual plot and a normal probability plot of the residuals.

c. Decide whether you can reasonably consider Assumptions 1–3 for regression inferences met by the two variables under consideration.

a. Obtain and interpret the standard error of the estimate.

b. Obtain a residual plot and a normal probability plot of the residuals.

c. Decide whether you can reasonably consider Assumptions 1–3 for regression inferences met by the two variables under consideration.

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