| 1 |
|
- A. best estimators
- B. biased estimators
- C. unbiased estimators
- D. normal estimators
|
| 2 |
Types of statistical inferences are |
- A. one
- B. two
- C. three
- D. four
|
| 3 |
The probability associated with confidence interval is called: |
- A. Level of confidence
- B. Confidence coefficient
- C. Both A and B
- D. Confidence limits
|
| 4 |
The following statistic are unbiased estimators: |
- A. The Sample mean
- B. S<sup>2</sup> = Σ(X - X)<sup>2</sup>/n-1
- C. The sample proportion
- D. All the above
|
| 5 |
The difference of upper and lower limits of confidence interval measures the |
- A. level of significance
- B. level of confidence
- C. interval
- D. precision
|
| 6 |
Small sample has less than |
- A. 50 values
- B. 45 values
- C. 30 values
- D. 35 values
|
| 7 |
A single value used to estimate a population value is called: |
- A. Interval estimate
- B. Point estimate
- C. Confidence interval
- D. Level of confidence
|
| 8 |
An estimator is ------------ if its expected value is equal to the population parameter to be estimated |
- A. bad
- B. biased
- C. unbiased
- D. none of these
|
| 9 |
The standard error of the estimate increased by decreasing |
- A. population
- B. sample size
- C. errors
- D. precision
|
| 10 |
If the observations are paired and the number of pairs is n, then the number of degree of freedom is equal to |
- A. n
- B. n - 1
- C. 2n
- D. 2n - 1
|
