The mean of 10 numbers is 9, then sum of these numbers will be__________________?

Related Mcqs:

1. The variance of 5 numbers is 10. If each number is divided by 2, then the variance of new numbers is______________?

   A. 20
   B. 5
   C. 2.5
   D. 5.5
   E. 0

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

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

3. The Harmonic Mean of any two numbers is________________?

   A. a+b2
   B. 2aba+b
   C. ab−−√
   D. a+b

4. The sum of the deviations about the mean is always______________?

   A. Range
   B. Zero
   C. Total Standard Deviation
   D. Positive
   E. Negative

5. The algebraic sum of deviations from mean is_____________?

   A. Maximum
   B. Zero
   C. Minimum
   D. Undefined

6. The sum of squared deviations of a set of n values from their mean is__________________?

   A. Zero
   B. Maximum
   C. Least
   D. None

7. The sum of powers of deviation from mean is zero is called __________?

   A. Mean
   B. Lack
   C. Normal
   D. Skewed

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. 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

10. The average of first n natural numbers is_______________?

    A. n+12
    B. n2
    C. All of the above
    D. None of these