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Tess is tasked with analyzing a data set with multiple variables with various scales. To reducethe difference in scale in variables, she is following a common process called_____________ to make the observations unit-free.
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- We can plot the residuals sequentially over time to look for correlated observations. How are violations indicated?-When positive residuals are shown consistently over time and negative residuals are shown consistently over time-When all the residuals are negative-When positive residuals and negative residuals alternate over a few periods, sometimes positive or negative for a couple of periods.-There is no detection method
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- We can plot the residuals sequentially over time to look for correlated observations. If there is no violation, then what would you see?-The residuals should show no pattern around the vertical axis.-The residuals should show a normal pattern around the horizontal axis.-The residuals should show no pattern around the horizontal axis.-The residuals should show a normal pattern around the vertical axis.