Given the set of scores 5.4, 5.6, 5.7, 5.9, 6.0; find the variance.

A ) 0.381
B ) None of these
C ) 0.0456
D ) 0.145
E ) 0.214

Question

Given the set of scores 5.4, 5.6, 5.7, 5.9, 6.0; find the variance.

A )  0.381 
B )  None of these 
C )  0.0456 
D )  0.145 
E )  0.214

parthkohli · Answer

B) None of these, the variance is 0.057

anonymous · Answer

What is variance ? Could u explain how u solve @ParthKohli  pls.

parthkohli · Answer

http://www.sciencebuddies.org/science-fair-projects/project_data_analysis_variance_std_deviation.shtml

anonymous · Answer

and where s my solution?

parthkohli · Answer

Actually I know mean, median,mode.. I don't know variance haaha

amistre64 · Answer

$$var=\frac{\sum (x-\mu)^2}{N}$$

amistre64 · Answer

u = 5.72

since we square the results; the order you subtract aint important

5.4-u = .32: 
5.6-u = .12: 
5.7-u = .02: 
5.9-u = .18: 
6.0-u = .28: 

squre the results and add em up


5.4-u = .32: .1024
5.6-u = .12: .0144
5.7-u = .02: .0004
5.9-u = .18: .0324
6.0-u = .28: .0784
                   -------
                     .2280/5 = .0456