Rset third problem set

# Rset third problem set - R Assignment Statistics W1211 Ji...

This preview shows pages 1–3. Sign up to view the full content.

R Assignment Statistics W1211 Ji Meng Loh Homework 3 2: Min. 1st Qu. Median Mean 3rd Qu. Max. 0.1337 0.2525 0.3509 0.5917 0.5908 4.3480 It is clear that the overwhelming majority of the whales take on less than one unit of time to complete the swim of one kilometer. The mean time of 0.5917 is somewhat innaccurate because it is skewed by extreme outliers, mainly values the maximum value of 4.3480 which is more than 700 percent greater than the average value and an additional value estimated to be around 4.0. The Median is much more accurate of this population and is also much smaller than the mean value. A trimmed mean would probably bring the average to a value that was closer to the median value of 0.3509. The histogram with five bins shows that the distribution is clearly skewed to the right. The histogram with twenty bins shows that the mode is more precisely described in the range 0.25 to 0.5.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
3: Reciprocal Min. 1st Qu. Median Mean 3rd Qu. Max. 0.230
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 06/25/2008 for the course STAT 1211 taught by Professor Hernandez during the Spring '08 term at Columbia.

### Page1 / 5

Rset third problem set - R Assignment Statistics W1211 Ji...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online