(This article was first published on

**twotorials by anthony damico**, and kindly contributed to R-bloggers)**sixty **twotorials now posted. two minutes each.

new video highlights:

- 024 how to run counts, tables, crosstabs, and flat tables on a data frame in r
- 030 what is a function anyway and how does it input and output stuff in r
- 022 how to generate basic descriptive statistics – means, medians, sums, quantiles – on data tables in r
- 051 how to read and write excel files with the xlsx package in r
- 038 how to graph simple plots and make scatterplots in r
- 047 how many different ways can you slice and dice (subset) a data table in r?

purpose.of.twotorials.com <-

ifelse(

you are not yet fluent in the r language ,

help you learn more ,

provide quicklinks to answer colleagues’ r questions )

here’s a video that no one who has ever seriously used r would need – but might find useful to send along with syntax that a newbie needs to run for some reason:

i appreciate your feedback. if you have an idea for a twotorial, i’d love to hear it. i’d also be excited about guest twotorials.

To

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