Post Your Answer

Do the populations in an unpaired t-test have same variance?

5 years ago in Statistical Analysis By Pradeep Kumar

Statistical Tests

In an unpaired T-test, do the 2 populations have the same variance or are they different? Also, are the errors dependent? Please guide me on this.

All Answers (3 Answers In All) Post Your Answer

By Jasmin Answered 5 years ago

Errors can be independent or dependent depending on the value and the group means. For example, if there are 6 values in a group, then the error is not independent. That is, some of the other factors might result in the increase or decrease of the value.

Reply To Jasmin

By Suma Answered 5 years ago

Unpaired T-test has same variance for the two populations. You can use prism test to determine the variance. The P value from the test answers the questions such as variance of the populations and random selection of samples. Small value of P suggests that the variances are not similar. However, if you have plenty of data you can interpret the results and determine if the variances are equal or not.

Reply To Suma

View Related Questions

Is there a way to compare two different cognitive tests regardless of whether the group is the same or not?

52149
Views
0
Votes
5
Answer

asked at 15 Dec, 2021 13:12 in Statistical Analysis By Anjum

Descriptive statistics and its types

6778
Views
41
Votes
4
Answer

asked at 22 Dec, 2019 07:19 in Statistical Analysis By Anjan Behera

Statistical and clustering data ming technique

15152
Views
23
Votes
4
Answer

asked at 25 May, 2019 05:16 in Statistical Analysis By Seema

Why use Chi-square test?

6113
Views
35
Votes
3
Answer

asked at 25 May, 2019 03:04 in Statistical Analysis By Pragya

Statistical test for sample size grater than 30

588
Views
21
Votes
3
Answer

asked at 09 May, 2019 03:15 in Statistical Analysis By Kriya

One-way ANOVA vs two-way ANOVA

691
Views
23
Votes
4
Answer

asked at 02 May, 2019 07:23 in Statistical Analysis By Kriya

Need for statistical approach in thermodynamics

715
Views
47
Votes
7
Answer

asked at 13 Mar, 2019 07:16 in Statistical Analysis By Prithvi Patel

The significance of 2 different values

469
Views
51
Votes
2
Answer

asked at 29 Oct, 2018 05:03 in Statistical Analysis By Luv Bhatia

The statistical method used for comparison

542
Views
57
Votes
2
Answer

asked at 29 Oct, 2018 03:56 in Statistical Analysis By Kartik Varma

R software for Meta-analysis

383
Views
33
Votes
1
Answer

asked at 20 Oct, 2018 07:13 in Statistical Analysis By Nitesh Singhal

How to run statistical analysis?

507
Views
63
Votes
3
Answer

asked at 16 Oct, 2018 12:15 in Statistical Analysis By Naman Bhalla

Statistical test for my study.

484
Views
52
Votes
7
Answer

asked at 05 Oct, 2018 04:13 in Statistical Analysis By Mansi Singhal

Exploratory factor analysis

392
Views
12
Votes
1
Answer

asked at 17 Aug, 2018 04:06 in Statistical Analysis By Kartik Varma

Statistical technique

504
Views
30
Votes
0
Answer

asked at 29 Jul, 2018 13:00 in Statistical Analysis By Mayank Singh

Advance your Research by
Joining the Community

Sign up for free

Connect on familiar ideas on various subjects

PhD Admissions
Action Research
APA Style
Annexure I Journals
Academic Writing
Abstract
Content Analysis
PhD Thesis
Qualitative Research
Research Proposal
Research Question
Review Paper
SPSS
Structural Analysis
SWOT Analysis
Synopsis
Technical Writing
Topic
Topic Selection
Turnitin
University Guidelines
Plasma
API
Python
Training
Big Data
Cloud Computing
Structural Equation Modelling
Statistics
Blockchain