Values and types
R has numeric, character, logical, factor and list types, and vectors can hold one type at a time.
What you will be able to do
- Use class() to inspect a value.
- NA represents missing data.
- Factors store categorical values.
In plain English
R has numeric, character, logical, factor and list types, and vectors can hold one type at a time.
- Use class() to inspect a value.
- NA represents missing data.
- Factors store categorical values.
count <- 3L
ratio <- 0.75
label <- "CSS"
missing <- NA
print(class(count))
print(is.na(missing))Your turn
EasyExplain it back
Answer from memory: What does NA represent in R?
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Knowledge checkQuestion 1
What does NA represent in R?
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