Topic 3 DQ 1

User Generated

qnyvnan1984

Mathematics

Description

Please Respond to the following post with a paragraph, add citations and references.

A T-test determines if there is a statistical significant difference between 2 independent sample groups. This test asks - whetherthere is a difference between the means of 2 groups because of chance. This test is geared for a samll sample size of <30.

Key points of a T test:

  • All data points are independent.
  • The sample size is small. Generally, a sample size exceeding 30 sample units is regarded as large, otherwise small but that should not be less than 5, to apply t-test.
  • Sample values are to be taken and recorded accurately.

A Z-test is a statistcal calculation that can be used to compare populations to means to a sample. Basically, how far in standard deviation data points are from the mean of the data points. This test compares the sample to a defined population and is used for a large sample size n>30. This tests hypothesis iwhen the S.D. is known.

Key points of a Z-test:

  • All sample observations are independent
  • Sample size should be more than 30.
  • Distribution of Z is normal, with a mean zero and variance 1.

Z Test & T Test: Similarities & Differences. 2018 Retrieved from https://study.com/academy/lesson/z-test-t-test-sim...

Surbhi, S. March 10, 2018. Difference between t-test and z-test. Retrieved from https://keydifferences.com/difference-between-t-te...


User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

Explanation & Answer

Please let me know if there is anything needs to be changed or added. I will be also appreciated that you can let me know if there is any problem or you have not received the work. Please let me know if there is anything needs to be changed or added. I will be also appreciated that you can let me know if there is any problem or you have not received the work Good luck in your study and if you need any further help in your assignments, please let me know Can you please confirm if you have received the work? Once again, thanks for allowing me to help you R

Running head: PART 7 TOPIC 3 DQ1

1

Part 7 Topic 3 DQ1
Name
Course
Date

PART 7 TOPIC 3 DQ1

2
Part 7 Topic 3 DQ1

As stated in the discussion post, the t-...


Anonymous
Just what I needed…Fantastic!

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4

Related Tags