RDD.
sampleStdev
Compute the sample standard deviation of this RDD’s elements (which corrects for bias in estimating the standard deviation by dividing by N-1 instead of N).
Examples
>>> sc.parallelize([1, 2, 3]).sampleStdev() 1.0
previous
pyspark.RDD.sampleByKey
next
pyspark.RDD.sampleVariance