Question

How many states have a population of over 4000k? Use R commands to count.

Please note that the state.x77 dataset needs to be used. Lastly, please provide the complete R code. Thank you.

Answer 1

The rocde:

# to call the data
data=state.x77
View(data)
#to count the state greater than 4000k use library(plyr)
library(plyr)
No_of_state_true=count(data[,1]>4000);No_of_state_true

Output is:

> # to call the data
> data=state.x77
> View(data)
> #to count the state greater than 4000k use library(plyr)
> library(plyr)
> No_of_state_true=count(data[,1]>4000);No_of_state_true
x freq
1 FALSE 32
2 TRUE 18

Thus, the number of states that has a population over 4000 is 18.

Cheers!

Please let me know if you have any confusion. Thanks.