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The median for an odd number of observations is _________ where n is the number of observations. rank on the ascending order of observations b) rank on the ascending order of observations c) Average of and (n/2) rank on the ascending order of observations d) (n/2) rank on the ascending order of observations
The mean of 5 observations is 60, the mean of 10 observations is 30 and the mean of 15 observations is 20. The mean of all the 30 observations is-
How does number of observations influence overfitting? Choose the correct answer(s).Note: Rest all parameters are same
1. In case of fewer observations, it is easy to overfit the data.
2. In case of fewer observations, it is hard to overfit the data.
3. In case of more observations, it is easy to overfit the data.
4. In case of more observations, it is hard to overfit the data.
If the mean of m observations out of n observations is n and the mean of remaining observations is m, then what is the mean of all n observations?
The mean of 10 observations is 27. Later, it was found that two observations were wrongly copied as 13 and 14. If wrong observations are replaced with 18 and 19, then what is the new mean? 
Let p be the mean of m observations and q be the mean of n observations, where p ≤ q. If the combined mean of (m + n) observations is c, then which one of the following is correct?
The arithmetic mean of 11 observations is 11. The arithmetic mean of the first 6 observations is 10.5 and the arithmetic mean of the last 6 observations is 11.5. What is the sixth observation?
The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The 15th observation is
The mean of 12 observations is 15. One more observation is included and the new mean becomes 16. The 13th observation is
The mean of 20 observations is 19. One more observation is included and the new mean becomes 20. The 21st observation is