Tips For Creating Sample Data Frames

Kevin Feasel

2019-02-11

R

Neil Saunders shares some tips for creating sample data frames, such as when asking questions on Stack Overflow:

For better or worse I spend some time each day at Stack Overflow [r], reading and answering questions. If you do the same, you probably notice certain features in questions that recur frequently. It’s as though everyone is copying from one source – perhaps the one at the top of the search results. And it seems highest-ranked is not always best.

Nowhere is this more apparent to me than in the way many users create data frames. So here is my introductory guide “how not to create data frames”, aimed at beginners writing their first questions.

Read on for a few tips. These are aimed at people asking questions but they’re sound advice in general.

Related Posts

Using Cohen’s D for Experiments

Nina Zumel takes us through Cohen’s D, a useful tool for determining effect sizes in experiments: Cohen’s d is a measure of effect size for the difference of two means that takes the variance of the population into account. It’s defined asd = | μ1 – μ2 | / σpooledwhere σpooled is the pooled standard deviation over both cohorts. […]

Read More

Comparing Iterator Performance in R

Ulrik Stervbo has a performance comparison for for, apply, and map functions in R: It is usually said, that for– and while-loops should be avoided in R. I was curious about just how the different alternatives compare in terms of speed. The first loop is perhaps the worst I can think of – the return vector is […]

Read More

Categories

February 2019
MTWTFSS
« Jan Mar »
 123
45678910
11121314151617
18192021222324
25262728