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1 0 N 9 saved What does the following code do ( you may look at either the R or SAS code ) ? out

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What does the following code do (you may look at either the R or SAS code)?
out of 1.00
SAS:
data classdata;
set classdata;
if optimism>50 then IsOptimistic=1;
else if optimism>=0 and optimism=50 then IsOptimistic=0;
run;
R:
classdata$isOptimistic - ifelse(classdata$optimism >50,1,)
Select one:
a. Removes observations with optimism >50
b. Creates a new binary variable
c. Flags values of the variable "optimism" that are unrealistic
d. Divides the dataset into two smaller datasets
Clear my choice
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