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"))

Let’s look at Synnex in the corp_tax tibble

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

# A tibble: 1 × 5
  company profit   tax tax_rate industry                
  <chr>    <dbl> <dbl>    <dbl> <chr>                   
1 Synnex    174.  53.4    0.307 Retail & wholesale trade

Synnex is in the Retail & wholesale trade . It had a profit of 174.139million and tax of 53.419 million. Its tax rate was 30.7 %.

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Let’s find the company in the Internet Services & Retailing industry with the highest profit.

result <- corp_tax %>% 
  filter(industry == "Internet Services & Retailing") %>% 
  slice_max(profit, n=1)
result

# A tibble: 1 × 5
  company  profit   tax tax_rate industry                     
  <chr>     <dbl> <dbl>    <dbl> <chr>                        
1 Facebook   8624  1747    0.203 Internet Services & Retailing

Facebook is in the Internet Services & Retailing industry. It had a profit of 8624million and tax of 1747 million. Its tax rate was 20.3 %.