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

Table of Contents

## 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.
- 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?
- 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.

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```### #1. Margin of error can be defined as the function of ________

### #2. Standard error is _________ divided by the square root of ________?

### #3. _______ will be used for estimating population mean for sample size greater than 30

### #4. Z-test can be used to perform hypothesis testing related to sample ________?

### #5. Estimating population mean with 95% confidence interval would mean the value of Z-score to be _______

### #6. Standard error is the ___________ of the ___________ in the sampling distribution?

### #7. Z-score is used when _________ standard deviation is known?

### #8. Z-test can be used for __________?

### #9. 2-sample Z-test can be used to perform hypothesis testing for ________?

### #10. Z-test can be used for __________?

### #11. 1-sample Z-test can be used to perform hypothesis testing for ________?

### #12. Estimating population mean with 95% confidence interval given a sample size of 10 would mean the value of T-score to be _______

### #13. Z-statistics can be used to estimate ________ proportion?

### #14. Standard error is the ___________ of the ___________ in the sampling distribution?

### #15. _______ will be used for estimating population mean for sample size lesser than 30

### #16. Z-statistics can be used to estimate ________ proportion?

### #17. ______ is used when population standard deviation is unknown and the sample size is small?

### #18. Standard error is the ___________ of the ___________ in the sampling distribution?

### #19. 2-sample Z-test can be used to perform hypothesis testing for ________?

### #20. Margin of error can be defined as the function of ________

### #21. _______ will be used for estimating population mean for sample size lesser than 30

### #22. Z-test can be used to perform hypothesis testing related to sample ________?

### #23. 1-sample Z-test can be used to perform hypothesis testing for ________?

### #24. _______ can be used for hypothesis testing when the sample size is larger than 30

### #25. Z-statistics can be used to estimate ________ mean?

### #26. ______ is used when population standard deviation is unknown and the sample size is small?

### #27. Z-score is used when _________ standard deviation is known?

### #28. Estimating population mean with 95% confidence interval would mean the value of Z-score to be _______

### #29. Margin of error can be defined as the function of ________

### #30. Estimating population mean with 95% confidence interval given a sample size of 10 would mean the value of T-score to be _______

### #31. Z-score is used when _________ standard deviation is known?

### #32. Standard error is _________ divided by the square root of ________?

### #33. _______ can be used for hypothesis testing when the sample size is larger than 30

### #34. Standard error is _________ divided by the square root of ________?

### #35. _______ will be used for estimating population mean for sample size greater than 30

### #36. Z-statistics can be used to estimate ________ mean?

## Results

Congratulations! You passed the test!
Latest posts by Ajitesh Kumar (see all) - Data Ingestion Types – Concepts & Examples - December 2, 2022
- Data Warehouse Concepts & Examples - December 1, 2022
- Data Models Types, Uses & Examples - November 29, 2022

You may try again!

Latest posts by Ajitesh Kumar (see all)
- Data Ingestion Types – Concepts & Examples - December 2, 2022
- Data Warehouse Concepts & Examples - December 1, 2022
- Data Models Types, Uses & Examples - November 29, 2022

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- Data Ingestion Types – Concepts & Examples - December 2, 2022
- Data Warehouse Concepts & Examples - December 1, 2022
- Data Models Types, Uses & Examples - November 29, 2022

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