ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 441  444 of 461
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 461 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 300.00 or
Question number: 441
» Statistical Methods » Regression  Linear and Polynomial
Question
If the coefficient of determination of a simple linear regression is 0.65. This results means that________.
Choices
Choice (4)  Response  

a.  65 % of the total variation is explained by the dependent variable 

b.  The correlation coefficient is 0.65 also 

c.  The relationship between two variables is negative 

d.  65 % of the total variation is explained by the independent variable 

Question number: 442
» Statistical Methods » Dispersion
Question
What is the relation between the mean deviation (M. D. ) from the mean and the standard deviation (S. D. ) of the A. P.
Choices
Choice (4)  Response  

a.  No relationship exist between S D and M D 

b.  S D < M D 

c.  S D = M D 

d.  S D > M D 

Question number: 443
» Statistical Methods » Dispersion
Question
In a study to test the effectiveness of a new variety of wheat, an experiment was performed with 50 experimental fields and the following results were obtained:
Yield per Hectare (in quintals)  Number of Fields 
31  35  2 
36  40  3 
41  45  8 
46  50  12 
51  55  16 
56  60  5 
61  65  2 
66  70  2 
The mean yield per hectare is 50 quintals. Determine the standard deviation of the above distribution.
Choices
Choice (4)  Response  

a.  63 

b.  7.61 

c.  7.93 

d.  58 

Question number: 444
» Statistical Methods » Collection, Compilation and Presentation of Data
Question
Which of the following statement is/are correct regarding Statistical Presentation of data?
Choices
Choice (4)  Response  

a.  Mean is a partition value which divides the series into two nearly equal parts and remains the centre of gravity. 

b.  Mode of a data remains unaffected in presence of outliers. 

c.  Mean is more robust statistics than median. 

d.  None of the above 
