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Match each regression diagnostic test with what it evaluates.

The regression diagnostic plot below highlights potential issues with: 

You sample 101 residents in the City of San Antonio and find that during the month of April their mean daily time at home was 20 hours with a standard deviation of 5 hours. The nationwide average was 18 hours. What is the t-value produced by a one sample difference test analyzing if San Antonio is significantly different from the US?  Formula:

What is the primary difference between Global and Local Moran’s I? 

You have calculated a multivariate regression model but want to know which independent variable is most important. What function will enable you to robustly answer this question?

A researcher wants to understand if median household income differs significantly between the four US Census regions. What would be the most appropriate statistical procedure?

In order to calculate Moran’s I, neighbors and spatial weights must be defined first.

What assumption of classical statistics is violated by spatial autocorrelation?

What is the primary difference between Global and Local Moran’s I? 

You are conducting a two-sample difference test and need to know if the variances of the two samples are equal. What function would you use in R?