Bike_sharing

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bike1 <- read.table("bike_sharing_data.txt", sep="\t", header=TRUE)

bike2 <- read.csv("bike_sharing_data.csv")

bike <- read.table("bike_sharing_data.csv", sep=",", header=TRUE)

bike3 <- read.delim("bike_sharing_data.txt")

dim(bike)

## [1] 17379    13

bike[6251, "season"]

## [1] 4

table(bike$season)

## 
##    1    2    3    4 
## 4242 4409 4496 4232

sum(bike$windspeed >= 40 & bike$season %in% c(1, 4))

## [1] 46