introduction to dplyr

Code and text for quiz 3.

Load the packages that we need

library(tidyverse)
library(readxl)
library(here)

Read the data into R

corp_tax<- read_excel(here("corp_tax.xlsx"))

Look at Dish Network in copr_tax tibble

result  <- corp_tax  %>%
  filter(company=="DISH Network")
result  

# A tibble: 1 x 5
  company      profit   tax tax_rate industry          
  <chr>         <dbl> <dbl>    <dbl> <chr>             
1 DISH Network  2145.  44.5   0.0207 Telecommunications

DISH Network is in the Telecommunicationsindustry, It had a profit of $ 2145.257million and tax of $ 44.451million. Its tax rate was 2.1 %

Lets find the company in the Chemicals industry with the highest profit

result  <- corp_tax  %>%
  filter(industry=="Chemicals") %>% 
  slice_max(profit,n=1)
result

# A tibble: 1 x 5
  company          profit   tax tax_rate industry 
  <chr>             <dbl> <dbl>    <dbl> <chr>    
1 Sherwin-Williams  1307.  289.    0.221 Chemicals

Sherwin-Williamsis the company in the chemicals industry with the highest profit, It had a profit of $ 1307.278million and tax of $ 288.755million. Its tax rate was 22.1 %