#0090

Count Factor Levels

EasyR12 min10 XP

Problem

Given status <- factor(c("new", "paid", "new", "cancelled")), count how many times each level appears.

Factors represent categorical data in R. Counting levels is one of the first checks before modeling or plotting.

Example 1

Inputnew, paid, new, cancelled

Outputcancelled 1, new 2, paid 1

table counts each category.

CodeR

status <- factor(c("new", "paid", "new", "cancelled"))

# write your code here

status <- factor(c("new", "paid", "new", "cancelled"))

# write your code here

Visible browser tests run here when available.

Testcases1 visible / 3 hidden categories

Status counts

Inputfactor status vector

Expectednew count is 2

new appears twice.

Hidden Test Categories

unused factor levelscharacter vector before factorNA category handling