FAQ: Statistical Thinking - Introduction

This community-built FAQ covers the “Introduction” exercise from the lesson “Statistical Thinking”.

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one person on this list is 39 years old with 40 years of experience. Is that an error or did he spend time in the hyperbolic time chamber?

3 Likes

Actually, I’ve found 44 rows like that one:

Using code:

music$compare ← ifelse(music$experience > music$age, “not ok”,
ifelse(music$experience < music$experience, “ok”, “ok”)
)
compare_not_ok ← length(which(music$compare == “not ok”))
compare_not_ok

1 Like

So a database is a file (like the one for musicians) that has variables defined at the start and then each new row (one enter is pressed) creates a new record?

Is that right?