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"))

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

result

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

NVR is in the Telecommunications industry.

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

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