Add mann-whitney U test r script
Add mann-whitney U test r script

Used to test the difference in the selected extracts vs rejected.

charlieegan3/standpoint,charlieegan3/points-extraction,charlieegan3/points-extraction,charlieegan3/points-extraction,charlieegan3/standpoint,charlieegan3/points-extraction,charlieegan3/points-extraction,charlieegan3/standpoint,charlieegan3/points-extraction,charlieegan3/standpoint,charlieegan3/standpoint