Introduction to dplyer

Code and text for Quiz 3.

Load the packages 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 industry. It had profit of $ 174.139 million and tax of $ 53.419 million. Its tax rate was 30.7%.

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Let’s find 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 × 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 Health care industry with the highest profit. It had profit of $ 4990 million and tax of $ 1128 million. Its tax rate was 22.6%.