GGR270H1 Final: Week 4 Study Notes
Document Summary
Ggr 270 lecture 4 october 6, 2010. standard scores are referred to as z scores. Indicate how many standard deviations separate a particular value from the mean. Z scores can be positive or negative depending if they are > or < the mean. Z score of the mean is o and the standard deviation is positive or negative. Table of normal values provides probability info on a standardized scale. but, we can also calculate z scores. Formula involves comparing values to the mean value, and dividing by the standard. result is interpreted as the number of standard deviations an observation lays above or below the mean". measures the degree of symmetry in a frequency distribution. determines how evenly the values are distributed either side of the mean. allows for comparison of variability of spatial samples.
