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  3. Inference for Categorical Data in R

Exercise

Extracting the first digit II

There are different levels at which we could consider looking at vote totals. We could look at precincts, or counties, or states, and each level might give us a slightly different picture of what's going on.

For this analysis, look at totals at the county level in Iowa and focus on the votes for the two major party candidates: Republicans Trump / Pence and Democrats Clinton / Kaine.

Instructions 1/3

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Using the iowa dataset, filter the rows so they contain only the two main party candidates, then group based on county and add up the votes to create a new column called dem_rep_votes. Save the resulting data frame to iowa_county.