Introduction to dplyr

Code and text for Quiz 3

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

Read data into R.

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

Let’s look at Amazon in the corp_tax tibble

result <- corp_tax %>%  
  filter(company == "Amazon.com")
result

# A tibble: 1 x 5
  company    profit   tax tax_rate industry                
  <chr>       <dbl> <dbl>    <dbl> <chr>                   
1 Amazon.com  10835  -129  -0.0119 Retail & wholesale trade

Amazon is the Retail & wholesale trade industry. It had profit of $ 1.0835^{4} million and tax of $ -129 million. Its tax rate was -1.1905861 %

---

Let’s look at the company in the Health Care industry with the highest profit

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

# A tibble: 1 x 5
  company profit   tax tax_rate industry   
  <chr>    <dbl> <dbl>    <dbl> <chr>      
1 Anthem    4990  1128    0.226 Health care

Anthem is the company in the Health Care with the highest profit. It had profit of $ 4990 million and tax of $ 1128 million. Its tax rate was 22.6052104 %