Hi! I have a very large dataset and would like to calculate number of members in the household who are considered children ( aged under 18). I have a column for number of household members, as well as 11 columns for each household member's age. My initial thought would be to select those who are under 18 and subtract from total household members. I've tried a few different lines of code unsuccessfully and I'm not sure how best to go about executing this. Any help is greatly appreciated!
To make it easy to help you, please post the output of
dput(head(DF))
where you replace DF with the name of your data frame. Put three backticks before your output.
```
Your output
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