| 1 |
Types of statistical inferences are |
- A. one
- B. two
- C. three
- D. four
|
| 2 |
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
|
| 3 |
A single value used to estimate a population value is called: |
- A. Interval estimate
- B. Point estimate
- C. Confidence interval
- D. Level of confidence
|
| 4 |
Confidence intervals which are often used in practice are |
- A. 90%
- B. 95%
- C. 98%
- D. all of these
|
| 5 |
(1-α) is called: |
- A. Critical value
- B. Level of significance
- C. Level of confidence
- D. Interval estimate
|
| 6 |
The standard error of the estimate increased by decreasing |
- A. population
- B. sample size
- C. errors
- D. precision
|
| 7 |
The endpoints of a confidence interval are called: |
- A. confidence coefficient
- B. Confidence limits
- C. Error of estimation
- D. Parameters
|
| 8 |
If (1-α) is increased, the with of a confidence interval is: |
- A. Decreased
- B. Increased
- C. Constant
- D. Same
|
| 9 |
A specific value of an estimator computed from the sample data is called |
- A. estimation
- B. estimate
- C. interval estimate
- D. point estimate
|
| 10 |
The probability associated with confidence interval is called: |
- A. Level of confidence
- B. Confidence coefficient
- C. Both A and B
- D. Confidence limits
|
