Search results “Test interpretation sample”

Independent samples t-test example in SPSS where the aim is to test the difference in means between 2 groups of a quantitative variable.

Views: 101928
Phil Chan

I demonstrate how to perform and interpret a paired samples t-test in SPSS. I also point out that many people fail to test the homogeneity of variance assumption in the paired samples t-test, but that this can be done relatively easily with a Pitman-Morgan test.
paired t-test

Views: 280325
how2stats

Hypothesis test for the difference between means of two populations.
View more lessons or practice this subject at http://www.khanacademy.org/math/ap-statistics/two-sample-inference/two-sample-t-test-means/v/two-sample-t-test-for-difference-of-means?utm_source=youtube&utm_medium=desc&utm_campaign=apstatistics
AP Statistics on Khan Academy: Meet one of our writers for AP¨_ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP¨_ Statistics. Today he's hard at work creating new exercises and articles for AP¨_ Statistics.
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today!
Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc
Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc

Views: 41792
Khan Academy

I work through examples of finding the p-value for a one-sample t test using the t table. (It's impossible to find the exact p-value using the t table. Here I illustrate how to find the appropriate interval of values in which the p-value must lie.)

Views: 530076
jbstatistics

How to run an independent samples t-test in SPSS 22 and calculate and interpret effect size using Cohen's d.

Views: 39641
Peter Naegele

An example of a paired sample t test in SPSS - interpretation, write up of results.

Views: 7436
Phil Chan

STATA Tutorials: T-test: Comparing Two Means From Independent Samples is part of the Departmental of Methodology Software tutorials sponsored by a grant from the LSE Annual Fund.
For more information on the Departmental of Methodology visit http://www.lse.ac.uk/methodologyInstitute or follow us on http://twitter.com/MethodologyLSE
LSE Annual Fund webpage http://www.alumni.lse.ac.uk/olc/pub/LHE/filemanager/annualfund/default.htm

Views: 55804
Methodology LSE

Learn about p values, what their correct interpretation is, and how they are used to decide if you should reject or fail to reject a null hypothesis. This video is the fifth in a series that introduce the concepts and principles of hypothesis testing, in the context of a one-sample t-test.

Views: 9897
MarinStatsLectures-R Programming & Statistics

How to conduct a two sample independent t-test using excel when equal variances is not assumed.

Views: 92114
Mastee Badii

This lecture builds up on concepts of hypothesis testing discussed in previous lectures and introduces the concept of P-Values of hypothesis test. We demonstrate how P-Value is actually the probability of the null hypothesis being true.
The lecture demonstrates how to interpret the P-Value and use it to accept or reject the null hypothesis. More specifically we discuss the reasoning behind ‘if p value is low – null has to go’. We discuss how to compare the P Value against the alpha value to decide on acceptance or rejection of the null hypothesis.
The lecture graphically demonstrates the concept of acceptance and rejection regions on the sampling distributions, and how the p-value of the test can be used to demonstrate if the observed sample lies in the acceptance region or rejection region.
This playlist provides approximately 10 hours of our Analytics Training series. For more information, please visit www.learnanalytics.in . For enquiries drop an email to [email protected] . The training covers basic business statistics concepts and using tools such as SAS, SPSS , Statistica and R using Rattle.
The objective of the training series is to prepare the student for a career in Data Analysis and the Analytics Industry in general. Please visit our website for further details.
If you wish to subscribe to our full Analytics Training module, please visit http://goo.gl/nIJJHg for our paid Youtube Channel which contains additional hours covering more extensive topics including Linear Regression/Logistic Regression, building and testing predictive models using Logistic / Decision Trees and Ensembling. All videos on our paid channel are available without advertisement interruptions and you can enrol for a 14 day free subscription trial. You pay only if you want to continue.
Additionally, you get access to the datasets discussed in the videos and all SAS Codes.

Views: 4406
Learn Analytics

This video demonstrates how to conduct a One-Sample Kolmogorov-Smirnov Test in SPSS. The K-S Test compares a variable’s distribution function with a specified theoretical distribution (normal, uniform, Poisson, or exponential).

Views: 29240
Dr. Todd Grande

I demonstrate how to write a high quality results section for a dependent samples t-test (aka., paired samples t-test).

Views: 30352
how2stats

This video will show you how to verify if there is a difference in the variances of two samples. Basically, we are wondering if one sample is more varied than the other.

Views: 115420
ProfS Taylor

For more on hypothesis testing, visit:
http://www.statisticshowto.com/post-index/critical-values-z-tables-hypothesis-testing/

Views: 71260
Stephanie Glen

We demonstrate how to run a one-sample t-test, including how to specify the test value for the parameter under the null hypothesis. We also walk you through the t-test result right up to the statistical and substantive conclusions.

Views: 52513
quantoct

R script download: http://rstatisticsandresearch.weebly.com/independent-samples-t-test.html
Real-life example
Assumptions
Output interpretation

Views: 5312
R Statistics and Research

A tutorial showing how to use the Excel Data Analysis Tool-pak to conduct two sample t-test assumung unequal variance or equal variance. Paired observations t-test are also covered.

Views: 11874
Stokes Baker

I demonstrate how to write a high quality results section for an independent samples t-test.

Views: 93815
how2stats

This video describes how to perform one-sample and independent-samples t tests using SPSS.

Views: 10501
Dr. Todd Grande

This video demonstrates how to use the “z-Test: Two Samples for Means” analysis in Microsoft Excel. This z-test analysis is used to determine if there is a statistically significant difference between two sets of scores when the population variance is known.

Views: 16182
Dr. Todd Grande

This video examines how to interpret the confidence interval for the independent samples t test in SPSS. Confidence intervals can be used instead of the p-value to assess whether or not the test is significant.
YouTube Channel: https://www.youtube.com/user/statisticsinstructor
Channel Description: For step by step help with statistics, with a focus on SPSS (with Excel videos now too). Both descriptive and inferential statistics covered. For descriptive statistics, topics covered include: mean, median, and mode in spss, standard deviation and variance in spss, bar charts in spss, histograms in spss, bivariate scatterplots in spss, stem and leaf plots in spss, frequency distribution tables in spss, creating labels in spss, sorting variables in spss, inserting variables in spss, inserting rows in spss, and modifying default options in spss. For inferential statistics, topics covered include: t tests in spss, anova in spss, correlation in spss, regression in spss, chi square in spss, and MANOVA in spss. New videos regularly posted. Videos series coming soon include: multiple regression in spss, factor analysis in spss, nonparametric tests in spss, multiple comparisons in spss, linear contrasts in spss, and many more. Subscribe today!
YouTube Channel: https://www.youtube.com/user/statisticsinstructor
Video Transcript:
In the previous video we ran the independent samples t-test for a problem where we were comparing the no music group versus the high volume group and examining whether there was a significant difference between these two groups in terms of their test scores. When we ran that we had the output that showed a significant difference with the p of .014 between our two groups. Now, alternatively, instead of looking at the p-value we could interpret the ninety-five percent confidence interval and that's what I want to do here. Notice this range does not include zero and you may recall from a previous presentation on the one-sample t that we had said that if zero was not in this range, that indicates that the test is statistically significant; that is, there's a significant difference between our two groups and since this range does not
include zero, the test is significant and we can see that confirmed by a p-value of less than or equal to .05. Another way to think about it is if zero was in this range, say this was negative 1.69
and this was 13.11, zero would be in this range if this was negative
if you saw that then the p-value here would also be greater than .05. So this is another way to interpret the results of the independent samples t-test - we can look at the ninety-five percent confidence interval and once again if zero is not in the range that means the test is statistically significant whereas if zero is included in this range then the test is not statistically significant.
This concludes the presentation on the ninety-five percent confidence interval for the independent samples t-test. Thanks for watching.

Views: 4664
Quantitative Specialists

How to perform a Brown-Forsythe and Welch F tests in SPSS. These tests are robust to violation of the homogeneity of variance assumption. I also show the degree to which these tests work at keeping alpha close to .05 across various conditions based on published simulation research.

Views: 28326
how2stats

Another way of measuring the difference between two samples is to compare two unrelated samples. In this design, you measure two groups one time; in contrast, the previous paired test measured the same sample two times. With independent samples, you test whether the means of the samples are, not just different, but statistically significantly different.

Views: 33603
Research By Design

We check the significance of the difference in means between 2 samples using a T Test (in Excel).
Dataset can be downloaded at www.learnanalytics.in/blog/wp-content/uploads/2014/02/car_sales.xlsx

Views: 13537
Learn Analytics

Using Minitab software to calculate the results for a 1-sample t-test

Views: 24599
Keith Bower

statisticslectures.com - where you can find free lectures, videos, and exercises, as well as get your questions answered on our forums!

Views: 327449
statslectures

Using Minitab Release 17 software to calculate the results for a 2-sample t-test

Views: 23552
Keith Bower

This video shows how to conduct a one-sample hypothesis t-test for the mean in Microsoft Excel using the built-in Data Analysis (from raw data).
How to load Data Analysis in Excel: https://youtu.be/SqpSwxJ9t2k

Views: 82645
Joshua Emmanuel

Discover how to compute Student's t-test for two independent samples using Stata. Created using Stata 12. Copyright 2011-2017 StataCorp LLC. All rights reserved.

Views: 120880
StataCorp LLC

Visit http://www.statisticshowto.com/how-to-do-a-t-test-in-excel-2013/ for more information on t-tests and hypothesis testing

Views: 206054
Stephanie Glen

Cardiff Maths Support tutorial video on Two Sample t-tests.
Please feel free to leave any comments you might have on this video below or on the Maths Support blog: cfmathssupport.wordpress.com

Views: 101733
cfmathssupport

I demonstrate how to perform a one sample-test in SPSS using two different examples. The one sample t-test is appropriate for testing hypotheses about the difference between a sample mean and a population "mean" (or "mu") when the population standard deviation (sigma) is not known.

Views: 54872
how2stats

A lesson on how to perform a paired sample t-test using SPSS/PASW.

Views: 263061
bernstmj

How to Use SPSS
When we calculate the mean of a sample, we can then use a one-sample t test to compare that sample mean to another mean, such as a mean from a population or a normative group. This video will introduce you to concepts that you will need later when you learn about hypothesis testing.

Views: 36934
Research By Design

Statistics with R | Two Sample t-test

Views: 9925
Dragonfly Statistics

http://alphabench.com/data/excel-paired-samples-test.html
Test for a mean difference in paired or related samples using Excel. Use output to calculate a confidence interval. Some texts also refer to this as a repeated measures test.
See the following for how to use the T.TEST function to test hypotheses:
https://youtu.be/HD77RI3EKt8

Views: 155172
Matt Macarty

This video shows how to conduct a one-sample hypothesis z-test for the mean in Microsoft Excel using the built-in Data Analysis (from raw data).
How to load Data Analysis in Excel: https://youtu.be/SqpSwxJ9t2k
Data used:
Age
25
30
23
21
24
22
24
25
22
21
22
18
20
24
24
22
23
19
21
20
21
21
19
21
19
24
20
20
20
23
22
23
19
22
19

Views: 40968
Joshua Emmanuel

How to Use SPSS to perform a two sample t test with Dr Ami Gates

Views: 127401
ProfessorAmiGates

statisticslectures.com - where you can find free lectures, videos, and exercises, as well as get your questions answered on our forums!

Views: 155015
statslectures

(Part 2) I demonstrate how to write a high quality results section for an independent samples t-test.

Views: 44824
how2stats

one sample t test using spss for beginners step by step with interpretation

Views: 501
Kirti Joshi

I demonstrate how to perform a one-sample z-test in SPSS. The z-test is useful to test the hypothesis that a sample mean is equal to a population mean when the population standard deviation (sigma) is known.
The syntax can be found here:
http://how2stats.blogspot.com.au/2014/03/one-sample-z-test.html

Views: 44144
how2stats

Learn how to conduct the one-sample t-test and confidence interval for the mean of a single variable. You will learn to use "t.test", "boxplot", "attributes" and "$" commands. This video is a tutorial for programming in R Statistical Software for beginners.
You can access and download the "LungCapData" dataset here:
Excel format: https://bit.ly/LungCapDataxls
Tab Delimited Text File: https://bit.ly/LungCapData
Here is a quick overview of the topics addressed in this video:
0:00:11 when is it appropriate to use one sample t-test and confidence interval
0:00:35 how to conduct the one-sample t-test and the confidence interval in R using the "t.test" command
0:00:41 how to access the Help menu in R for the t-test
0:01:05 how to test a null and one-sided alternative hypothesis for the mean with a one-sided confidence interval in R using "t.test" command and "alt" argument
0:02:40 how to produce a two-sided hypothesis test and confidence interval in R, setting the "alternative" ("alt") argument to "two.sided"
0:03:16 how to create a 99 percent confidence interval in R using the "conf" argument
0:03:46 how to see different attributes of an object in R using the "attributes" command
0:03:59 how to extract specific attributes of an object in R using the dollar sign ($)

Views: 86960
MarinStatsLectures-R Programming & Statistics

Given results of a two-sample t test, compare the P-value to the significance level to make a conclusion in context about the difference between two means.
View more lessons or practice this subject at http://www.khanacademy.org/math/ap-statistics/two-sample-inference/two-sample-t-test-means/v/conclusion-for-2-sample-t-test-from-p-value?utm_source=youtube&utm_medium=desc&utm_campaign=apstatistics
AP Statistics on Khan Academy: Meet one of our writers for AP¨_ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP¨_ Statistics. Today he's hard at work creating new exercises and articles for AP¨_ Statistics.
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today!
Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc
Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc

Views: 6059
Khan Academy

This video compares the Independent-Samples T Test to the Paired-Samples T Test (Dependent-Samples T Test) using SPSS. The assumptions for both tests are reviewed.

Views: 8262
Dr. Todd Grande

Learn how to conduct the independent two-sample t-test and confidence interval for the difference in means of two populations. You will learn to use "t.test", "boxplot", "var.eq" and "leveneTest" command. This video is a tutorial for programming in R Statistical Software for beginners.
You can access and download the "LungCapData" dataset here:
Excel format: https://bit.ly/LungCapDataxls
Tab Delimited Text File: https://bit.ly/LungCapData
here is a quick look at the topics addressed in the video:
0:00:10 when is it appropriate to conduct the "independent two sample t-test" and "confidence interval
0:00:53 how to access the help menu in R for t-test
0:01:04 how to visually examine the relationship between the two variables in R before conducting the t-test
0:01:18 how to conduct an independent two-sided t-test with non-equal population variances in R using the "t.test" command
0:01:56 the null and alternative hypothesis, the confidence interval, and variance assumption for our example
0:03:06 how to use the "mu" argument in two-sided t-test
0:03:12 how to use the "alt" argument in order to do a one-sided t-test
0:03:18 how to use the "conf" argument in order to change the confidence level for the t-test
0:03:24 how to use the "var.eq" argument in order to assume equal population variances for t-test
0:03:29 how to let R know that groups are paired or dependent using the "paired" argument
0:03:37 two different ways for separating the groups in "t.test" command in R
0:04:18 how to decide if we want to assume equal or non equal variances using boxplot
0:04:38 how to decide if we want to assume equal or non equal variances comparing the actual variances
0:05:02 how to test the null hypothesis "that the population variances are equal" using Levene's test using "leveneTest" command

Views: 128275
MarinStatsLectures-R Programming & Statistics

(Part 2) I demonstrate how to write a high quality results section for a dependent samples t-test (aka., paired samples t-test).

Views: 6430
how2stats

Kv kanjikode holiday homework passes

Earth is dearer than gold essay

Course reflection essay theology

Dom juan daniel mesguich critique essay

© 2018 Latest styles in fashion designing

Abandoned Temple. At the very first intersection, to the right is a room. A chest in that room contains the candelabrum needed to solve quest 3. Continuing down the corridor into the caverns, you will come to a room containing a chest in the middle of the room and a Spark spell containstly bashing down onto it. You can empty the chest by timing you steps correctly. Be careful, as the Spark spell seems to be a master level spark. The next room and then north leads to where Angela is trapped. She will join your party automatically and you can return her to town to solve quest 6. Further west and then back east, and then to the end of the passage is a teleporter that returns you to the room south of where you found Angela. If you instead go further west is the lair of some cobras. You can find several cobra eggs scattered around this room. To the south is the lair of the Queen of the Spiders. Kill her and you will find her heart. This will satisfy quest 4. There is also a teleporter here that will return you to the starting room.