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 x 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 Utilities, gas and electric industry with the highest profit.

result  <-corp_tax  %>%
  filter(industry == 'Utilities, gas and electric')  %>%
slice_max(profit, n=1)

result

# A tibble: 1 x 5
  company        profit   tax tax_rate industry                   
  <chr>           <dbl> <dbl>    <dbl> <chr>                      
1 NextEra Energy   7289    30  0.00412 Utilities, gas and electric

NextEra Energy is the company in Utilities, gas and electric industry. It had profit of $ 7289 million and tax of $ 30 million. Its tax rate was0.4%.