Point Estimates and Confidence Intervals MCQs
Point Estimates and Confidence Intervals MCQs
These Point Estimates and Confidence Intervals multiple-choice questions and their answers will help you strengthen your grip on the subject of Point Estimates and Confidence Intervals. You can prepare for an upcoming exam or job interview with these 20+ Point Estimates and Confidence Intervals MCQs.
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1: A confidence interval resembles a positively skewed distribution.
A. True
B. False
2: Z and t distributions can be used to construct confidence intervals.
A. True
B. False
3: Confidence intervals are set a priori (before) a calculation is made.
A. True
B. False
4: Confidence intervals are calculated the same for all sample sizes.
A. True
B. False
5: Degrees of freedom are calculated using a z score.
A. True
B. False
6: Confidence intervals can be constructed at which of the following levels?
A. 95%
B. 99%
C. 95% and 99%
D. None of these
7: Confidence intervals are used with which of the following types of tests?
A. One-tailed tests
B. Two-tailed tests
C. One-tailed tests and two-tailed tests
D. None of these
8: Which of the following statements describes the purpose of a confidence interval?
A. To be able to make predictions with greater accuracy
B. To give the researcher more leeway
C. To project data
D. To change z scores
9: The higher the confidence level the less?
A. Confidence a researcher has
B. Precision a researcher has
C. Data one can gather
D. Confidence a researcher has and precision a researcher has
10: Which of the following statements are accurate concerning confidence levels for proportions?
A. They employ the z distribution.
B. The employ the t distribution.
C. They are exactly the same as those for means.
D. They employ the mode.
11: Which of the following statements defines a point estimate?
A. How researchers estimate data
B. A confidence interval
C. A little uncertainty in a sample statistic
D. A z score
12: Which of the following statements defines the level of confidence?
A. Relates to the sample statistic only
B. Is the probability a confidence interval contains the parameter
C. Is purely descriptive
D. None of these
13: Which of the following percentages are the typical confidence intervals in criminology/criminal justice research?
A. 80–85%
B. 85–90%
C. 90–95%
D. 95–99%
14: Which confidence interval has the best chance of being correct?
A. 99% confidence interval
B. 95% confidence interval
C. Both have equal chances
D. Neither have a chance of being correct
15: How likely is it that a prediction will be wrong using a 95% confidence interval?
A. 95%
B. 10%
C. 1%
D. 5%
16: _____ is defined as the opposite of the confidence level; that is, the probability that a confidence interval does not contain the true population parameter. Symbolized α.
A. Alpha level
B. Negative relationships
C. All of these
D. Undefined relationships
17: _____ is known as a range of values spanning a point estimate that is calculated so as to have a certain probability of containing the population parameter.
A. None of these
B. There is no relationship between IVs and DVs.
C. Exhaustive
D. Confidence interval
18: Is critical value the value of z or t associated with a given alpha level. Symbolized zα or tα?
A. False
B. True
19: _____ is the probability that a confidence interval contains the population parameter. Commonly set at 95% or 99%.
A. To figure out which type of statistic to use
B. To calculate a chi-square statistic
C. Level of confidence
D. All of these
20: _____ is defined as a sample statistic, such as a mean or proportion.
A. 95%
B. Point estimate
C. 99%
D. All of these
21: _____ is known as a statistical test in which alpha is split in half and placed into both tails of the z or t distribution.
A. None of these
B. Exploratory research
C. Two-tailed test
D. Choose a statistical statistic
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Point Estimates and Confidence Intervals MCQs
