Please use D2L to turn in both the HTML output and your R Markdown file in.

Define data wrangling and discuss why it is an important element in the data analysis or data visualization process.

Implementone function from the dplyr package on a dataset we have used in class (such as http://math.montana.edu/ahoegh/teaching/stat408/datasets/SeattleHousing.csv or http://math.montana.edu/ahoegh/teaching/stat408/datasets/HousingSales.csv )

Describe the difference between `substr()`

and `strsplit()`

.

Use one of these function to create a new variable for the hour an Uber ride began using http://math.montana.edu/ahoegh/teaching/stat408/datasets/UberMay2014.csv.

Then apply the `count()`

function from dplyr to compute the number of rides starting at each hour