When testing for randomness, we can use_____________?

Related Mcqs:

1. To perform a Runs test for randomness the data must be_______________?

   A. Divided into at least two classifications
   B. Divided into exactly two classifications
   C. Quantitative
   D. Qualitative

2. The Runs test results in rejecting the null hypothesis of randomness when______________?

   A. There is an unusually large number of runs
   B. There is an unusually small number of runs
   C. None of these
   D. Either of the above

3. The Estimation and testing of hypothesis are main branches of ________________?

   A. Sampling
   B. Probability distribution
   C. Regression
   D. Statistical Inference

4. In testing for the difference between two populations, it is possible to use____________?

   A. The Wilcoxon Rank-Sum test
   B. The Sign test
   C. None of the above
   D. Either of the above

5. In hypothesis testing probability of (alpha +beta) =1?

   A. Increase
   B. Decrease
   C. Yes
   D. No

   Submitted by: Nimra Shaheen

6. When in hypothesis testing (alpha) increases (1-beta)?

   A. Decrease
   B. Equal
   C. Increases
   D. None of these

   Submitted by: Nimra Shaheen

7. Three brands of coffee are rated for tasted on a scale of 1 to 10. Six persons are asked to rate each brand so that there is a total of 18 observations.The appropriate test to tasted equally good is_____________?

   A. One way analysis of variance (ANOVA)
   B. Spearman Rank difference
   C. Wilcoxon Rank-Sum test
   D. Kruskal-Wallis test

8. For a biased estimator θˆ of θ, which one is correct_______________?

   A. MSE(θˆ)=SD(θˆ)+Bias
   B. MSE(θˆ)=Var(θˆ)+Bias2
   C. MSE(θˆ)=SD(θˆ)+Bias2
   D. MSE(θˆ)=Var(θˆ)+Bias

9. The minimum variance unbiased estimator of the population mean is _______________?

   A. 6/√n
   B. S/√n
   C. S2/n
   D. 6x/√n

10. For t distribution, increasing the sample size, the affect will be on ?

    A. Standard Error of the Means
    B. The t-ratio
    C. Degrees of Freedom
    D. All Above