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Data set B is much more variable than Set A since the
standard deviation for data company B is larger than
for company A.
for Computer steps : For Company B data
ON MODE COMP (1) MODE SD (4)
8.7 DT 10.7 DT 7.3 DT 16.5 DT 21.8
SHIFT S-SUM n (3) EXE 1
SHIFT S-VAR x SHIFT S-VAR xσn 2
2 (1) EXE
(2) EXE DT 55.0 DT 6
16.41117505 For data, x1 , x2 ,.............., xN , the standard deviation
σ = Variance = ( xi − µ ) 2
N Often the data x1 , x2 ,.............., xN are “neat”
numbers such as integers, but µ involves
a lot of decimal places. The results of ( x − µ )
will also be ugly, i.e. involving many
decimal places, so tha...
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This note was uploaded on 03/02/2013 for the course STAT 0301 taught by Professor Gabriell during the Spring '09 term at HKU.
- Spring '09