CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

In an experiment with 15 observations, the results are as follows:x2=2830, x=170.One observation that was 20 was found to be wrong and was replaced by the correct value 30. Then the corrected variance is


A
78.00    
loader
B
188.66
loader
C
177.33
loader
D
8.33
loader

Solution

The correct option is A 78.00    
n=15;x2=2830;x=170(x2) Corrected=2830(20)2+(30)2=3330(x) Corrected=17020+30=180σ2=333015=(18015)2 σ2=x2n=(xn)2=222144=78

Mathematics

Suggest Corrections
thumbs-up
 
0


similar_icon
Similar questions
View More


similar_icon
People also searched for
View More



footer-image