BITSAT2012MathematicsStatisticsActual
If sample A contains 100 observations 101,102, 200 and sample B contains 100 obsections 151,152, 250, then ratio of variance v _ A / v _ B =
Options
- A1
- B9 4
- C4 9
- D2 3
Correct answer
A. 1
Step-by-step solution
_ x ²= d ² i n But both A and B have 100 observations, then both the sample A and B have same standard deviation and the same variance. Hence, V _ A V _ B =1