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Factors and how to create them
Working with factors
10. Count NAs
Modifying factor variables
Summary

## Instruction

Let's check if this works! Try the exercise...

## Exercise

Using table(), calculate the number of people in each marital status group (mrt_status column in survey).

Observe that the table() function is explicit about the "(Missing)" level.

### Stuck? Here's a hint!

Type:

table(survey\$mrt_status)