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Issues with Truncated Data

by Jeff Meyer

In a previous post we explored bounded variables and the difference between truncated and censored. Can we ignore the fact that a variable is bounded and just run our analysis as if the data wasn’t bounded? [Read more…] about Issues with Truncated Data

R Is Not So Hard! A Tutorial, Part 15: Counting Elements in a Data Set

by guest 9 Comments

by David Lillis, Ph.D.

Combining the length() and which() commands gives a handy method of counting elements that meet particular criteria.

b <- c(7, 2, 4, 3, -1, -2, 3, 3, 6, 8, 12, 7, 3)
b

Let’s count the 3s in the vector b. [Read more…] about R Is Not So Hard! A Tutorial, Part 15: Counting Elements in a Data Set