Selecting columns

For these exercises, we’ll use the iris data set build into base R.

1. View iris to see what it looks like.

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2. Return a data frame with only the sepal columns using inclusion.

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3. Return a data frame with only the sepal columns using a helper function.

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4. Return a data frame with the sepal and petal columns using a helper function.

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5. Return a data frame with the sepal and petal columns using exclusion.

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6. Move Species to be the first column using select() and a helper function.

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7. Move Species to be the first column using relocate().

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8. Rename Species to species using select() and a helper function.

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9. Rename Species to species using rename().

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