BASIC CONCEPTS IN STATISTICS

    The values of measures of central tendency computed for a distribution following the normal curve are always -------

• A.     Equal        

•   B. Different       

• C. Greater than one      

• D. One

      The normal curve is ---------

• A.     Unimodal      

• B. Bimodal   

•   C. Multimodal   

• D. Asymmetric

      When one or both variables are measured on an ordinal scale, the appropriate correlation measure is --------

• A.     Pearson’s r    

• B. Spearman’s rho    

• C. Partial correlation    

     Level of significance is the maximum possibility of making --------

• A.     A correct decision    

• C. Type I error  

• B. wrong decision 

• D. Type II error

      The critical value of Z for a single-tailed test at 0.01 level of significance is -------

‘

• A.     1.96              

• B. 2.576                

• C. 1.645             

•   D. 2.326

     Test of goodness of fit’ is a type of ------- test.

• A.     Z – test          

• B. t – test       

•   C. F – test    

•     D. Chi-square test

      Which of the following is the non-parametric alternative to the t –test?

• A.     Repeated ANOVA         

•   B. Mann-Whitney U test

• C.     Kruskal-Wallis test  

•         D. Rank correlation

      In an ANOVA summary table between groups df is given as 5. How many groups are there in the experiment?

• A.     3      

•    B. 4       

• C. 5        

• D. 6

      In the summary of the result of an independent sample t test, the df is given as 30. What is the total sample size of the comparison?

• A.     28      

•    B. 30    

•      C.  31  

•       D. 32

      We name or label the groups in this scale

• A.     Nominal  

•   B. Ordinal   

• C. Interval

•     D. Ratio