If E(x) is the expected value of X then E[x – E(x)]= ___________________?

Related Mcqs:

1. Two attributes are associated if expected frequency is ____________________?

   A. Less than observed
   B. Greater than observed
   C. Equal to observed
   D. None of these

2. E(ax + b) = A E(x) +___________________?

   A. (C)
   B. E(x)
   C. b E(a)
   D. b

3. Sampling errors are reduced by:___________________?

   A. Increasing the sample size
   B. Decreasing the sample size
   C. Increasing population s.d.
   D. None of these

4. The hypothesis which is being tested is called ___________________?

   A. Composite hypothesis
   B. Alternative hypothesis
   C. Null hypothesis
   D. Simple hypothesis

5. An estimator Q is an unbiased estimator of the population parameter Q if ___________________?

   A. E(x) = µ
   B. E(Q) =Q
   C. E(Q) =Q
   D. E(P) = P

6. Binomial distribution is symmetrical when P=___________________?

   A. n
   B. x
   C. q
   D. 1 – P

7. The probability of success changes from trial to trial in:___________________?

   A. Binomial distribution
   B. Geometric distribution
   C. Sampling distribution
   D. Hypergeometrical distribution

8. The mean of hypergeometric distribution is:___________________?

   A. Nk/N
   B. N-k/n
   C. nN/k
   D. n+k/N

9. The relation showing between whole and its components used chart is said to be ___________________?

   A. Component bar chart
   B. Multiple bar chart
   C. Pie Chart
   D. Simple Bar chart

10. The process of systematic arrangement of data in rows and columns is called ___________________?

    A. Classification
    B. Tabulation
    C. Frequency
    D. Frequency distribaution