Introduciton to dplyr

Code and Text for Quiz 3

Load 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 Occidental Petroleum in the corp_tax tibble.

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

result

# A tibble: 1 x 5
  company              profit   tax tax_rate industry            
  <chr>                 <dbl> <dbl>    <dbl> <chr>               
1 Occidental Petroleum   3379   -23 -0.00681 Oil, gas & pipelines

Occidental Petroleum is in Oil, gas & pipelines industry. It had profit of $3379 million, taxes of $-23million. Its tax rate was -0.7%.

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Let’s find the company in the Food & Beverages & Tobacco industry with the highest profits.

result <- corp_tax %>% 
  filter(industry == "Food & beverages & tobacco") %>% 
  slice_max(profit, n=1)

result

# A tibble: 1 x 5
  company      profit   tax tax_rate industry                  
  <chr>         <dbl> <dbl>    <dbl> <chr>                     
1 Altria Group   8922  1911    0.214 Food & beverages & tobacco

Altria Group is in Food & beverages & tobacco industry. It had profit of $8922 million, taxes of $1911million. Its tax rate was 21.4%.