
In this blog post, you can test your knowledge about Z-test, Z-statistics and related concepts through multiple choice questions (MCQs) and answers. Getting a good understanding of Z-tests, Z-statistics and Z-distribution is of utmost importance for data scientists at large. The following are key concepts around which the MCQs are posted:
- Z-score or Z-statistics concepts
- Estimation of population mean and proportion
- 1-sample Z-test for mean and proportion
- 2-samples Z-test for mean and proportion
Z-test Interview Questions Samples
The following is a list of interview questions that you would want to learn:
- What is Z-score? Explain with an example and formula.
- What are different types of Z-tests? Explain with formula and examples.
- What is difference between 1-sample and 2-samples Z-test for means? Explain with one example each and formula.Â
- What is difference between 1-sample and 2-samples Z-test for proportions? Explain with one example each and formula.
- How do you estimate population mean at 95% confidence interval as a function of Z-score?
- How do you estimate population proportion at 95% confidence interval as a function of Z-score?
- What is standard error? How is it related to margin of error?
- When to use Z-test and when to use T-test?
- What is sampling distribution and how is it related to Z-test and Z-statistics?
- What is Z-distribution? How is this different from T-distribution?
- What is standard score?Â
- How can Z-score be used to compare marks of two students in different classes?
Z-test MCQs Quiz: Questions & Answers
The following is a list of questions and answers aimed to test your knowledge of different types of Z-tests, Z-statistics, hypothesis testing etc.
Congratulations! You passed the test! You may try again!
#1. ______ is used when population standard deviation is unknown and the sample size is small?
#2. Z-statistics can be used to estimate ________ mean?
#3. _______ can be used for hypothesis testing when the sample size is larger than 30
#4. Standard error is the ___________ of the ___________ in the sampling distribution?
#5. Standard error is _________ divided by the square root of ________?
#6. Z-score is used when _________ standard deviation is known?
#7. Estimating population mean with 95% confidence interval given a sample size of 10 would mean the value of T-score to be _______
#8. Estimating population mean with 95% confidence interval would mean the value of Z-score to be _______
#9. Z-statistics can be used to estimate ________ proportion?
#10. Standard error is _________ divided by the square root of ________?
#11. Z-score is used when _________ standard deviation is known?
#12. Z-statistics can be used to estimate ________ mean?
#13. Z-test can be used to perform hypothesis testing related to sample ________?
#14. ______ is used when population standard deviation is unknown and the sample size is small?
#15. Standard error is _________ divided by the square root of ________?
#16. Z-statistics can be used to estimate ________ proportion?
#17. Z-test can be used for __________?
#18. _______ will be used for estimating population mean for sample size lesser than 30
#19. 2-sample Z-test can be used to perform hypothesis testing for ________?
#20. _______ will be used for estimating population mean for sample size greater than 30
#21. _______ can be used for hypothesis testing when the sample size is larger than 30
#22. 1-sample Z-test can be used to perform hypothesis testing for ________?
#23. Estimating population mean with 95% confidence interval given a sample size of 10 would mean the value of T-score to be _______
#24. Margin of error can be defined as the function of ________
#25. Z-score is used when _________ standard deviation is known?
#26. Margin of error can be defined as the function of ________
#27. Standard error is the ___________ of the ___________ in the sampling distribution?
#28. 2-sample Z-test can be used to perform hypothesis testing for ________?
#29. _______ will be used for estimating population mean for sample size greater than 30
#30. Margin of error can be defined as the function of ________
#31. Standard error is the ___________ of the ___________ in the sampling distribution?
#32. 1-sample Z-test can be used to perform hypothesis testing for ________?
#33. Z-test can be used for __________?
#34. _______ will be used for estimating population mean for sample size lesser than 30
#35. Estimating population mean with 95% confidence interval would mean the value of Z-score to be _______
#36. Z-test can be used to perform hypothesis testing related to sample ________?
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I found it very helpful. However the differences are not too understandable for me