Arithmetic mean is _________ by change of origin and scale of measurement?

Related Mcqs:

1. The arithmetic mean _________ by 10 if 10 is added to all values?

   A. Decease
   B. Smaller
   C. Largest
   D. Increase

2. The arithmetic mean of 10,8,6,4, and 2 is ______________?

   A. 5
   B. 15
   C. 6
   D. 30

3. Arithmetic Mean is___________affected by extreme values?

   A. Not
   B. Highly
   C. Less
   D. None of these

4. Arithmetic mean of two positive numbers “X” and “Y” is_________________?

   A. ab2
   B. 2a2
   C. (a+b)/2
   D. a−b2
   E. 2a+b

5. For a certain distribution if ∑(x−2)=18,∑(x−24)=0,∑(x−28)=−24) then arithmetic mean is_______________?

   A. 21
   B. 24
   C. 28
   D. 0

6. Correlation coefficient is _________ of origin and unit of measurement?

   A. Origin
   B. Dependence
   C. Independence
   D. None

7. Combine mean calculated by different given mean is ________?

   A. n1x1 + n2x2x + _____ nuxu/n1 +n2 + ___ + nu
   B. n1x1 + n2x2x + _____ nuxu/x1 + x2 + ____ x4
   C. n1x1 + n2x2x + _____ nuxu/n1 + n2 + ___+ nu
   D. ∑n1x/x1

8. Random samples of size 17 are from a population that has 200 elements, a mean of 36, and a standard deviation of 8. which of the following best describes the from of the sampling distribution of the sample mean for this situation ?

   A. Approximately normal because the sample size is small relative to the population size
   B. Approximately normal because of the central limit theorem
   C. Exactly
   D. None of these alternatives is correct

9. The regression co-efficient are _________ origin?

   A. Dependent
   B. Independent
   C. Scale
   D. Both

10. The standard deviation is always _________ than mean deviation?

    A. Greater
    B. Less
    C. Equal
    D. None