# Search results

1. ### Anova with squared sum of the observations

You may like the explanation of how to compute the sum of squares provided here: https://statkat.com/compute-sum-of-squares-ANOVA.php . The page explains two ways of computing the sum of squares. You'll need method 2.
2. ### Role of T-Statistic in a T-Test

This is how a t test is often explained, but I don't consider it completely accurate. This question covers the reasoning behind the one sample t test...
3. ### RWA and political spectrum. Cont IV - Categorical DV

Maybe this method selection tool can help you find an appropriate statistical technique: http://statkat.com/statistical-technique-selection/tool-for-selecting-a-statistical-technique.php
4. ### SPSS INDEPENDENT T TEST PROBLEM

When you look at the scores of the variable 'infidelity' in your data set, are they all equal to 1? And when you look at the scores of the variable 'very disappoving and very accepting of infidelity' in your data set, are they all equal to 2? And is it correct that only one male as an observed...
5. ### SPSS INDEPENDENT T TEST PROBLEM

In the data view, have you set the variable type of both variables to numeric? And have you put your independent (grouping) variable below Grouping Variable and your dependent variable below Test Variable(s) (and not the other way around)? And how large is the standard deviation of the dependent...
6. ### SPSS INDEPENDENT T TEST PROBLEM

Have you entered the correct values in "Define Groups..."?
7. ### Estimated Values after ANCOVA in SPSS

The estimated marginal mean for a group is the estimated population mean and the predicted value for ALL people in that group, given that they score average on the covariate. So for someone who scores average on the covariate and is in group 1, the predicted score is equal to the estimated...
8. ### Estimated Values after ANCOVA in SPSS

The estimated marginal mean for a group is both the estimated population mean and the predicted value for people in that group, given that the covariate is equal to the grand mean.
9. ### I Need help finding the sum of the differences squared.

Did you click on the link I posted? The link is not related to mathlab. I think you were at the wrong website. But again: try to compute the difference between each of the scores and the overall mean, square these differences, and then sum the squared differences. That's all you need to do to...
10. ### I Need help finding the sum of the differences squared.

Did you click on the button for 'Sum of squares'? The last part of the explanation there explains how to compute the sum of squares total. In short, you compute the difference between each score and the overall mean (74.3125 in your case), square each difference score, and then sum all these...
11. ### I Need help finding the sum of the differences squared.

This question asks to compute the sum of squares within, the sum of squares between, and the sum of squares total: http://statkat.com/statquestion.php?q1=2&s1=3&qx=1&overview=true . Your formula corresponds with the sum of squares total. If you click on the question mark below the question, you...
12. ### Sign Test

You can find the formula for the test statistic and a how-to for finding the p value here: https://statkat.com/stattest.php?t=34 . Does that help?
13. ### Comparison of beta coefficients within the same group

I think the Sobel test is what you are looking for: https://en.m.wikipedia.org/wiki/Sobel_test. Also read about its shortcomings and possible alternatives.
14. ### Which Statistical test is it?

I think the links can help the OP to learn this, in a different way than the text book does.
15. ### Which Statistical test is it?

Is this method selection tool helpful for you? http://statkat.com/statistical-technique-selection/tool-for-selecting-a-statistical-technique-step-one.php You may also like to compare the different tests using these overview tables: http://statkat.com/stattest.php?t=6&t2=8&&t3=9 . You can...
16. ### How to calculate R^2 from Adj R^2 What is the formula?

What about R2 = 1 - (1 - AdjR2)*(N - K - 1) / (N - 1)
17. ### The same SPSS models give DIFFERENT results

Hi Tim, I think it has to do with missing values. In the analysis with only B as predictor, SPSS omits cases that have missing values on A or B. In the analysis with B as predictor in Block 1 and X as additional predictors in bock 2, SPSS omits cases that have missing values on A, B, or X in...
18. ### Statistics Homework

You may like this method selection tool to find out which test is appropriate here: http://statkat.com/statistical-technique-selection/tool-for-selecting-a-statistical-technique.php . The tool will also give you a link to an overview of that test (null and alternative hypothesis, formula, etc.).
19. ### How do r correlation coefficient and p value connect with N (number of subjects)

haha no problem

Df is N - 2