R Tutorial 29: Practice exercise 1 (with solution)

Thank you. Good training. I love Rstudio and data science. Maybe someday i will learn more about it.

Simplest way for me seems to be
solution<-subset(USArrests, Murder<=quantile(USArrests$Murder, 0.25))

When I use 'Which' function it's showing " Could not find the function which"! Please Help!

so helpful where to get more essential practice like this one

A combination of sorting and subsetting of data dealt with in two separate variations. In one of them you are allowed to sort and select the data with row positions changed. In the other on you are allowed to only select the data and get the observations without interchanging the original positions.

This is an essential practice exercise that you will come across in any typical data analyses. .