Linked Questions

2
votes
1answer
1k views

Spearman's correlation on discrete data

I'd like to know if it makes sense to use Spearman's correlation on my dataset. Below are plots between my 3 variables : Correlation plot (Spearman): It seems it's pretty good but since I'm not from ...
0
votes
0answers
469 views

Do Kendall’s tau and Spearman’s rho conclude the same hypothesis?

Correct me if I am wrong: both Kendall’s tau and Spearman’s rho are will result in the same conclusions with respect to whether the value of the underlying population correlation equals zero. I am ...
2
votes
0answers
150 views

How to choose rank correlation coefficient?

I want to quantify correlation between rankings. Rankings in this case have got ties. Also rankings don't rank all the same entries, the rankings might be of different sizes and rank different sets, ...
0
votes
0answers
20 views

What does spearman being higher than tau imply? [duplicate]

If Kendall's tau is lower than Spearman, what does it mean?
3
votes
1answer
3k views

Equivalent to Spearman correlation for non-monotonic data

I have several datasets of independent variables that have a monotonic (but non-linear) relationship. If I want to assess if they're correlated, the test of choice is Spearman's (rho) or Kendall's (...
0
votes
0answers
161 views

How to assess correlation in non-ordinal (non-ranked) and non-normally distributed data? [duplicate]

Looking at Person's, Spearman's and Kendall's correlation coefficients for the same data, we can see that both Spearman's Rho and Kendall's Tau misrepresent the acutal correlation, if the data is ...
10
votes
3answers
17k views

Correlation between two ordinal categorical variables

What is the best statistical test for investigating if there is any correlation between 2 categorical variables? Both are satisfaction scores: 1st variable is: Overall satisfaction with the service. ...
1
vote
0answers
203 views

interpretation of Goodman Kruskal Gamma

Value of Goodman-Kruskal Gamma = 1 or -1 means that X and Y are monotonic but not strictly so i.e., $X_1 < X_2$ implies $Y_1 \leq Y_2 $. Can someone please explain this to me with an example?
2
votes
0answers
678 views

Am I using Goodman-Kruskal gamma or Somers D or Kendall tau correctly and what do they mean?

I am seemingly blindly following this publication that has done work very similar to what I need to accomplish (page 18-21). My analysis is a multinomial logistic regression where I have 3 possible ...
0
votes
1answer
452 views

Hypothesis Testing using dichotomous and 7-point Likert scale

I am working on testing the following hypothesis: H1: People who are worried about their health will consume yogurt H0: People who are worried about their health will not consume yogurt I have ...
0
votes
1answer
408 views

How can I test if there is a correlation between a score and a likert scale?

I'm having difficulty finding out what I can do with my data set. It comes from a french reading test that have 30 multiple choice questions. For each of these questions: I have the facility value ...
0
votes
1answer
22 views

How to see if one (or one set of commonly answered) question(s) impacts/statistically influences another question/set of questions?

I'd like to review the results of a recent survey I conducted. I'd like to see how one set of answers may/may not have influenced another set of answers. For example: If users who answered ...
0
votes
1answer
622 views

How to analyze relationship between a nominal variable (2 values) and a numerical variable (integer)?

I'm trying to find out if a nominal variable A (2 values: x and y) and a numerical variable <...
1
vote
1answer
2k views

How do you correlate binary & ordinal variables?

Which test to use to calculate correlations between them? Cramer's V, Kruskal-Wallis, or something else?
1
vote
1answer
29 views

Adding time variable?

Good day, guys. I'm new to SPSS and I plan to determine if there is any relationship between grades and time spent in watching tv/video game playing using Spearman's rank correlation. Question is, how ...
0
votes
1answer
67 views

Correct Stats to Run?

I am doing a study on body image perceptions and physical activity among adolescents. My hypothesis is adolescents who engage regularly in physical activity will have a more accurate perception of ...
4
votes
1answer
371 views

Chi squared test with expected frequencies coming from another observation

I have done an experiment to test the performance of a system. In this experiment I collected answers from people. These answers are categorical (they were able to select on a 5 points scale). Each ...
1
vote
0answers
518 views

Reporting both Kendall's tau and Goodman's Gamma, does it make sense?

In a data analysis, does it make sense to report both Kendall's tau and Goodman's Gamma? I guess not, since tau looks like a standardized form of Gamma. Or does it add some explanation?
2
votes
1answer
2k views

Spearman's rho to correlate discrete with binary variables

Is it ok to use the Spearman's rho if one has to correlate a binary and a discrete (from 0 to 100) variable? Or Kendall's tau b would be a better choice?
1
vote
1answer
646 views

Trying to determine the similarity of the distributions of labels

I asked this question on stackoverflow first since it is more of an implementation question, but I got no answers yet, therefore I'm asking it here again. I have a dataset which is annotated by 2 ...
3
votes
1answer
3k views

Comparing time series: Pearson correlation, Kendall's tau b or Spearman's rho?

Which correlation coefficient is the most appropriate to compare 2 time series? I want to compare the variation of one variable for 2 regions, have regional data for the last 30 years. Is Pearson ...
3
votes
1answer
3k views

Kendall Tau-b correlation coefficient becomes more significant with many additional ties

Say I have two vectors of length N, x = [1, 10, 12, ..., 5, 6] y = [2, 11, 10, ..., 7, 9] I compute the Kendall tau-b rank order correlation on these two vectors ...
0
votes
0answers
3k views

How outliers can effect the correlation results (Spearman and Pearson)?

How outliers can effect the correlation results (Spearman and Pearson)? I have two series of data. The source of the data are different but both are temperature that are measured by different ...
28
votes
3answers
4k views

If linear regression is related to Pearson's correlation, are there any regression techniques related to Kendall's and Spearman's correlations?

Maybe this question is naive, but: If linear regression is closely related to Pearson's correlation coefficient, are there any regression techniques closely related to Kendall's and Spearman's ...
4
votes
1answer
433 views

Spearman's correlation useful with data that has an upper limit?

I am analyzing weather data from 2 sites, and trying to determine if they are correlated. For the most part, I am able to run linear regressions and Pearson's correlations since the data are ...
7
votes
1answer
2k views

Spearman or Kendall correlation? [duplicate]

I would like to assess the correlation between a 7-category ordinal variable (X) and a number of other variables some of which are ordinal with 3-6 categories, others are continuous and a couple are ...
4
votes
2answers
2k views

Pearson and Spearman correlations - how to determine if they are “similar”?

I would like to know if there are any rules to determine if Pearson's r correlation values are similar to Spearman's rho? For example, if r = -.207 and rho = -.282, are these similar enough to just ...
80
votes
5answers
72k views

Kendall Tau or Spearman's rho?

In which cases should one prefer the one over the other? I found someone who claims an advantage for Kendall, for pedagogical reasons, are there other reasons?