# Questions tagged [partial-correlation]

Partial correlation is the correlation between two variables when some other variables are controlled for. An example is the partial autocorrelation function in time series.

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### Partial correlations with independent variable used as control?

In my recent study I had one independent variable (IV, 2 levels) and a number of different DVs. The aim was to assess the relationship between teamwork (main response - continuous), presence (...
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### partial correlation for logistic regression

I am looking for an equivalent of partial correlation but for logistic regression. I.e., I want to have a measure of an effect a variable have on the outcome, independent of other variables in the ...
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### Derive Partial Correlation from residuals and inverse of Covariance [duplicate]

https://en.wikipedia.org/wiki/Partial_correlation it says that you can compute PCorr(X,Y|Z) both as correlation of the residuals of the linear regression X~Z and Y~Z, and as the inverse of the ...
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### how to interprete this acf and pacf plots

I am trying to interpret ACF and PACF plots correctly, after simulating a 500 long chronological serie following the MA(2) model, I got these ACF and PACF plots , This this mean MA(2) Model is ...
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### comparing two partial correlation coefficients (spearman)

I have carried out the following two spearman partial correlations using the "ppcor" package in R: -- Coefficient 1 = Correlation of A1 with B controlling for C; -- Coefficient 2 = Correlation of A2 ...
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### Multiple regression and partial correlations with more than 3 predictors

I need to estimate slopes of a multiple regression that has 5 independent variables: $$y = \alpha + \beta_1 x_1 + \beta_2 x_2 + \beta_3 x_3 + \beta_4 x_4 + \beta_5 x_5$$ The challenge is to estimate ...
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### Is it possible to control a categorical variable (gender) in partial correlation?

I have data of 250 people with one of protein's exprssion level, exercise duration, age and sex. I want to find a correlation between a protein expression level (which is a continuous variable) and ...
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### Correlogram With Points Beyond -1 and +1?

I made a partial correlation plot of the residual of a dataset using python. I got the pacf graph below with some correlation points going to 2 and -1.5. Everyone finds this strange, does someone have ...
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### Impact of VIF on t-value in linear Reg

for given data : I ran linear reg between y and x2 , x3 here VIF for X2 is 3.70455 it means t- value and p-value for X2 is not correct(t-value underestimate) but when I checked partial correlation ...
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### Trying to understand partial R-squared

I'm trying to understand partial R-squared as computed by package rsq. See the reproducible example on the standard data set: ...
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### Can partial correlation help to highlight variable's meaning in the analysis?

I have an interesting problem (interesting at least for beginners like myself :) ). I have a dependent variable Y (class-variable, 2 possible values 0 and 1). I have multiple variables that all ...
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### How do I choose the order of a hierarchical model with 3 predictors when 2 have a high correlation

I have 3 predictors (x,y,z) for a multiple linear regression and two of them (y,z) have a high correlation (>0.95). I know I shouldn't include both of those predictors in the model because it can ...
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### Which test is suitable in below situation?

I want to calculate the correlation of two continuous variables, unfortunately both of them are not normally distributed. (by using Shapiro-Wilk test) There are two categorical confounding variables ...
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### Real life use of acf and pacf

I understood ACF usefulness, with a temperature example... If we have a temperature time series, it is useful to know (for example) how correlated the temperature of past month is with this month. ...
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### Why to use ARMA model as a time series is either over-differenced or under-differenced?

Knowing that a time series is over-differenced or under-differenced, and adding an AR term to the model means that we are partially differencing the time series if it's underdifferenced till a white ...