[SPARK-6841] Similar to `stats.py` in Python, add support for mean, median, stdev etc.

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.4.0
• Component/s: SparkR
• Target Version/s: 1.4.0
• External issue URL: https://sparkr.atlassian.net/browse/SPARKR-92
• Assignee: Qian Huang
• Reporter: Shivaram Venkataraman
• Created: 10/Apr/15 02:07
• Updated: 06/May/15 03:40
• Resolved: 06/May/15 03:40

Description

Similar to `stats.py` in Python, we should add support for mean, median, stdev etc. More specifically the functions we should support include
1. sum(rdd)
2. histogram(rdd, buckets)
3. mean(rdd)
4. variance(rdd)
5. stdev(rdd)
6. sampleStdev(rdd)
7. sampleVariance(rdd)

Issue Links

• links to: [Github] Pull Request #5446 (hqzizania)