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Qbik has asked 42 questions and find answers to 8 problems.

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Qbik questions

Handling complex formulas with := (data.table assignment by reference)
Building ranking with genetic algorithm,
R create interactive plot with slider which width could be changed like in Google Finance (sizeable time-window)
How to exit from anaconda prompt and go back to cmd level?
R quantmod buildModel() does not fit model
Is there function for displaying text in R window?
How to obtain value of estimated parameters in SAS (proc phreg)?
How force R to load package, `library()` fails due to dependency?
R - is there any function from apply family which could compute FUN for every entry of matrix?
How to add new observation to already created dataset in SAS?

Qbik answers

Do I need to normalize (or scale) data for randomForest (R package)? [closed]
Subtracting ranges in VBA (Excel)