SSC CGL Tier 2 28th January 2022 Statistics
For the following questions answer them individually
If X follows the normal distribution with mean $$\mu$$ and variance $$\sigma^{2}$$, the fourth moment about origin is:
The television habits of 30 children were observed. The sample mean was found to be 8.2 hours per day, with a standard deviation of 2.4 hours per day. You tested the claim that the standard deviation was at least 6 hours per day. The value of the test statistics is:
The mode of dataset 5-10, 10-15, 15-25, 25-35, 35-50, 50-60 with frequency of each class 2, 6, 10, 22, 27, 11, respectively, is:
The ANOVA was used to test the results of three drug treatments. Each drug was applied to 20 patients. The MSE for this study was 16. What is the estimate of the population standard deviation for all 60 patients sampled for this study?
Analysis of variance is a statistical process of comparing the of yield under several treatments.
In a tri-variate population $$\gamma_{12} = 0.7, \gamma_{13} = 0.6$$ and $$ \gamma_{23} = 0.5$$, then the value of $$R^{2}_{1,23}$$ is:
