29. The mean value cannot be significantly influenced by outliers. Q29 Answer. 30. Standard deviation is a good measure of central location. Q30 Answer 31. A symmetric distribution has the characteristic; mean = median = mode. Q31 Answer: 32. Ordinary Least Square method is the best linear unbiased estimator. Q32 Answer: 33. In the regression, Grade = 6 + 0.25 Class Attended, Grade is the independent variable. Q33 Answer: 34. The two parameters required for Binomial distribution are number of trials and probability of success. Q34 Answer: 35. The value of confidence level for a significance level of 10% is 95% Q35 Answer:26. The P (Z