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Questions tagged [association-measure]

Measures of the association between variables, a more general concept than correlation

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What statistical test for association can I perform with my data? [closed]

I'm trying to figure out what nonparametric statistical test for association I can perform for the following data: -Independent variable: Average number of assignments on an EdTech platform per month ...
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Is there any difference between an "independent association" and to be "independent predictor"?

I wish to know if there is a difference between being an independent predictor of a variable or an specific event, and to be independently associated with i.e. hormones are independent predictors of ...
Javier Hernando's user avatar
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What is the best approach to look at association between change in X and change in Y?

What is the correct approach to analyze the association between changes in two variables with two synchronous repeated measurements? I have calculated delta change scores for variables X and Y both ...
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Valid covariate definitions that respect temporal relationships in regression models

I am trying to gain a better understanding of reasonable assumptions to make and valid ways to define covariates in regression models. I am putting aside survival methods where time is fundamental to ...
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Classification model for categorical data, highly imbalanced

I am trying to create a classification model for birth defect data. The goal is to determine which of the paternal variables are most associated with the top 5 birth defects. The target variable '...
Farmurey's user avatar
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Kruskal-Wallis with unbalanced classes and assumption of normality

Edited I want to better understand: how to appropriately approach a significant test with largely unbalanced classes appreciate the "story" that a statistical tests support Situation: I ...
user305883's user avatar
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Is stationarity always an requirement for Spearman correlation between two time-series?

I would like to know if time-series data always (in every case imagineable) has to be stationary before computing the Spearman correlation between two time-series. I subsequently explain my specific ...
Philipp's user avatar
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Assessing the relationship between two variables

I've been trying to analyze the possible association between the number of questions done while studying and the average result of users after several testing sessions. The ...
Pedro Alonso's user avatar
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Can log2 be substituted with ln in logDice association measure?

I am currently doing collocational analysis in the Russian National Corpus, to be precise the Russian national news subcorpus, to see what is the most significant collocates of the lemma "gay&...
pindakazen's user avatar
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How to identify patterns/associations in a multiple choice question towards another variable?

I have a dataset where with two questions. Question 1 is a multiple-choice question and asks the participants which treatment they took. E.g., treatment A, treatment B, treatment C etc. Question 2 ...
Gustav's user avatar
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How to correlate several binary (binominal) variables with each other?

I have a dataset that describes the answers of students to 7 questions (correct/wrong). So: Question1 Question2 ... Question7 student#1 correct correct wrong student#2 wrong correct correct ...
Gustav's user avatar
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Is there a better alternative for the Jaccard index to obtain the relationship between binary indices?

I currently have data from $n$ sources. Each source sends a binary signal each minute. I have a register of $p$ minutes. I have used Python to calculate the Jaccard indices of each signal as ...
slow_learner's user avatar
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How do I associate or assign a large amount of continuous variables with zero-heavy distributions to different groups?

I have a dataset with about 70 continuous numeric variables. I have about 80 samples which divide more or less equally into two groups. I want to figure out which of these variables is most strongly ...
Tal's user avatar
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Recommender system - for single user

I am building a recommender system, in which for one system there will be only one user. So we cannot use something like user-user data. Recommendation is an item which contains 10-15 attributes ie ...
Raj's user avatar
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Associative mapping in Stan using canonical regression approach

I've got 19 independent plant observations that consist of roughly 300 binary (dichotomous) genetic marker sightings at particular loci and 30 continuous concentrations of different types of ...
Adam Ryczkowski's user avatar
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Comparing the percentage changes of two Crosstabs (Chi-square test of independence/association)

I'm looking for an association between 2 variables before and after manipulation. I ran 2 separate crosstabs and I'm able to see for which cells there's an association. Additionally, I want to see ...
Beth's user avatar
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Method for determining which of two related continous variables has a stronger association with a third continous variable

I have two continuous variables and would like to determine which of these is more strongly associated with a third continuous variable. I realize I could perhaps do a multiple regression and see if ...
carl adam's user avatar
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Inclusion of interaction term and interpretation

I'm planning to run a large amount of regressions to test for an association between medical conditions. As my dependent variable is always age-dependent, I include age as a covariate. For example, I ...
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Finding association of attributes with node centrality/ degree value

I've run SNA and got the value of centrality of each node. I classified the centrality value into two group. Then based on this grouping, I would like to find the association of the attribute(gender, ...
juliana 's user avatar
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How to find significance of Eta correlation?

I am running a test of association between a categorical/multinomial variable (example: hair color) and a continuous/nominal variable (example: ratings of happiness 0-100). I believe the correct test ...
Rachel D's user avatar
1 vote
1 answer
545 views

Fisher test: odds ratio greater than 1 and p-value greater than 0.05

Is it possible that in the output of fisher.test() in R p-value is grater than 0.05 and odds ratio is not equal to 1? I have this table. The output of fisher.test() is: P-value=0.1789 indicates no ...
Stella's user avatar
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What statistical test would be appropriate for my study?

I am looking at the difference in flow rate on composition of coarse matter. I have set flow rate into two categories. Above and below 3700 L/s. I have raw data that consists (grams of matter for ...
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How to statistically test whether the co-existing of events is more likely after a treatment (paired data)

I have some nominal (binary) data at two time points. The data structure are as follows: participant event A event B event C event D 1 Before TRUE TRUE TRUE FALSE 2 Before TRUE FALSE TRUE FALSE 3 ...
William Wong's user avatar
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What statistical methods can I use to determine the popularity of item combinations taken from two groups?

Let's say I have two tables, listing projects with the programming languages and frameworks they use: ...
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Measure for the probability that a criteria (a subevent) is fulfilled conditional on an event (the mainevent) happening

Suppose I have a list of events over years. In this list multiple events can happen in the same year and for each event there are several characteristics / criteria. For example, you could have ...
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Exploring the differences in proportions

I have the following data: Score Treatment 1 Treatment 2 >=50% 10 16 < 50 % 21 7 I need to describe the differences in the proportion of individuals with score <50% in the two treatment ...
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Linking features via correlations

I am comparing two tables with different size of features (rows), but the same number of samples (columns). I know that a significant part of the features are the same in the two tables, but they are ...
Roger V.'s user avatar
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1 vote
2 answers
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Market Basket Analysis - Interpretation of mirrored association rules

I have performed Market Basket Analysis on sales data, that comes from non-sequential receipts. I've read into the meaning of the different metrics, but there is one thing I don't understand. When ...
Iarwain's user avatar
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Multiple associations in Relative Risk and Odds Ratio

I am a frequent user of the package (epiR), especially in Relative Risk and Odds Ratio. Generally, I use several covariates to make the associations (RR or OR), for example: outcome (death) versus ...
Bruno Avila's user avatar
1 vote
1 answer
121 views

Is there any reference justificating a P<0.10 as a cutoff for likelihood-ratio tests?

I am conducting log-likelihood-ratio tests to examine the goodness of fit of two competing logistic regression models. The test is the traditional log-likelihood-ratio test, in which I compare the ...
Jacob's user avatar
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4 votes
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In a chi-square test of association, what are the "dependent" variables?

The chi-square test of association is used to determine if there is an association between two categorical variables. In statistics, we call "dependent variable" a variable that is supposed ...
Guillaume F.'s user avatar
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Is the correlation coefficient more than a measure of the tightness of fit? [duplicate]

or in other words, to what extent and under what conditions, the correlation coefficient can be indicative of what a regression slope signifies (in the case of a linear bivariate model)?
Dr S A H F's user avatar
1 vote
1 answer
186 views

Using logistic regression to determine the association between covariates and being in the treatment group

I want to determine if there is an association between my covariates (age, gender, bmi) and whether the person is in the treatment group or not. I ran logistic regression using each covariate in term ...
Niam45's user avatar
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7 votes
4 answers
393 views

A formal definition of a "measure of association"

I've been trying to come up with a formal definition for a 'measure of association'. An intuitive definition might be something along the lines of 'a function that tells you about the existence or ...
Galen's user avatar
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2 votes
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How to use the chi squared test (a biological investigation)

Imagine four habitats - A, B, C and D - set up in a choice chamber and two species of the same family, X and Y, 20 individuals of each. In a series of experiments, we put these species into the choice ...
Rushi's user avatar
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1 answer
397 views

Study association between continuous and categorical variables

I have independent continuous variables like Age, Price and outcome variable like purchased ...
The Great's user avatar
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234 views

Correlation coefficient to use for data with non linear relationship

I am working with the following y = x^2 data type for my test studies ...
user1243255's user avatar
2 votes
1 answer
33 views

How Do I detect window of X corresponding to Y (nonlinearly)?

I have two continuous variables that may have nonlinear relationship. The dataset contains multiple recordings of X, each corresponding to multiple recordings of Y. The exact matching is unknown. How ...
isobretatel's user avatar
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Accuracy estimator for scan sample of categorical time series

Suppose we are tracking the behavior of some agent over time, and this agent can only exist in two states (+, -). This agent is only active for 20 timesteps, but we are only able to observe the agent ...
Colin M. Lynch's user avatar
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1 answer
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on the use of R squared as a measure of predictive accuracy for non-parametric models such as random forest

I am confused. I know there are a couple of similar questions about $R^2$ but I hope I get some opinions on this particular matter. I have trained a random forest and other nonparametric regression ...
Alireza Amani's user avatar
1 vote
0 answers
175 views

Simulating an example of correlation attenuation due to measurement error

I'm trying to simulate an example of the attenuation of an association due to measurement error. According to the attenuation formula from classical test theory, the presence of measurement error ...
itpetersen's user avatar
1 vote
1 answer
779 views

Do multiple chi square tests between a set of variables violate the assumption of independence?

I have a dataset of 28 nominal and ordinal categorical variables, 161 observations. If I use chi sq tests of association between variables, for example I test var1 and var2, var1 and var3 and var1 and ...
steve's user avatar
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4 votes
1 answer
5k views

Alternative to Bonferroni Correction when performing multiple one-vs-rest association tests

My question anonymizes the 'nouns' of the question to protect my employer. It is not really about lab rats and experimental treatments. I am also coming more from a Machine Learning background, so my ...
Kyle Pena's user avatar
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1 vote
1 answer
144 views

How to analyse association between two (paired) sets of measurements, when arbitrary to which set each member of a pair belongs

I have pairs of measurements and need advice to select a measure of association between the measurements. The special aspect that has me confused is the symmetry: there is no reason to allocate a ...
hutch's user avatar
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1 answer
112 views

Association between groups of features and outcome variable

I am working with a high-dimensional dataset (e.g., ~150 features) and possible confounders (e.g., ~10 features to control). The goal is to identify association with an outcome variable that is ...
vbip's user avatar
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How do I apply spearman rank correlation on one continuous variables like sales data in and other discrete variable like Industries count?

I have a dataframe with total sales of around 500 product categories in each row. So there are 500 columns in my dataframe. I am trying to find the highest correlated category with my another dataset ...
Priyanka Sharma's user avatar
1 vote
0 answers
12 views

What is the test for association between 5 point likert scale and ordinal variable? [duplicate]

Note the likert scale is very satisfied 2.satisfied Don't know Unsatisfied 5.very unsatisfied And the ordinal variable is anxiety: 1.normal 2.mild 3.moderate 4.severe
Tariq Moawia's user avatar
3 votes
1 answer
267 views

Regression for prediction versus understanding independent associations

I see that regression is used for 2 main purposes: To develop a predictive model for future use To understand associations. Specifically, to know which of the predictors have an "independent ...
rnso's user avatar
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1 vote
1 answer
41 views

What method to use to determine the association between multiple choice question in a questionnaire and continuous value outcome

I have data from a questionnaire to determine the level of diabetic foot care knowledge (DFCK) among undergraduate Podiatry students. The DFCK (i.e. outcome) is a score based on the total number of ...
arshad's user avatar
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1 vote
1 answer
19 views

How to test if con-infection between microbes is correlated?

I am analyzing the results from a diagnostic test that looks for the presence of micro-organisms in humans. In some cases, there is only one microbe but in others, there are multiple infections. What ...
Gigiux's user avatar
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