Exercise

Wide and Long Data 3

In this exercise, you will explore the wide format of the hdi_data dataframe and convert it to a long format using the gather() function from the tidyr package.

Note that:

tidyr is pre-loaded
hdi_data_wide dataframe is available in this session

Instructions 1/2

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Explore hdi_data_wide using str(). Could you see how many columns in the dataframe?.