Editing Statistics and Statistical Programming (Spring 2019)/Problem Set: Week 8
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: '''PC7.''' Load up the full dataset and fit the following linear model. Be ready to interpret the results in the same way you did for PC4 above: | : '''PC7.''' Load up the full dataset and fit the following linear model. Be ready to interpret the results in the same way you did for PC4 above: | ||
:: <math>\widehat{\mathrm{fruit}} = \beta_0 + \beta_1 \mathrm{obama} + \varepsilon</math> | :: <math>\widehat{\mathrm{fruit}} = \beta_0 + \beta_1 \mathrm{obama} + \varepsilon</math> | ||
: '''PC8.''' Examine the residuals for your model in and try to interpret these as you did in PC4 above. What do you notice? | : '''PC8.''' Examine the residuals for your model in and try to interpret these as you did in PC4 above. What do you notice? | ||
: '''PC9.''' Run the model on three subsets of the dataset: just 2012, 2014, and 2015. Be prepared to talk through the results. | : '''PC9.''' Run the model on three subsets of the dataset: just 2012, 2014, and 2015. Be prepared to talk through the results. | ||