ch3measuresofvariability

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: µ ____|________|_______|___|_______|__________|____ ____|________|_______|___|_______|__________|____ 6.7 9.2 12.4 12.8 15.2 20.5 6.7 The deviations are as follows: The µ ____|________|_______|___|_______|__________| ____ 6.7 9.2 12.4 12.8 15.2 20.5 6.7 x 6.7 9.2 12.4 15.2 20.5 total d i = ( xi − µ ) = ( xi − 12.8) -6.1 -3.6 -0.4 +2.4 +7.7 N d ∑ i= 1 i = 0 Note: The sum of the deviations is ALWAYS zero. These deviations may be large, may be small, may be positive, may be negative. We are naturally interested in the “average.” However, Average deviation = N Average ∑d i =1 N i = 2.4 − 3.6 − 6.1 − 0.4 + 7.7 0 = =0 5 5 The source of troubl...
View Full Document

Ask a homework question - tutors are online