akrun questions

akrun answers

• Mean and standard deviation by groups
• "Marking" Duplicates in R
• If you flip 100 coins, what is the probability that between 40 and 60 of them (inclusively) land on heads?
• Apply loop for rollapply windows
• Data transformation for machine learning
• Count largest number of consecutive zeros in a vector using a vectorized function
• Replace values in dataframe of rows and columns from vectors
• In R, read files from folder in a list and assign list element names by the file names w/o file format (.fa)
• How to pivot_longer a set of multiple columns? and How to go back from that long format to original wide?
• Efficient way of creating a new variable via fuzzy string matching and grouped summarization in R