# Questions tagged [interpretation]

Refers generally to making substantive conclusions from the results of a statistical analysis.

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31 views

I performed a PCA on the results of 4 different tests. Each test can only have whole integers as a score, and is measured on a scale of 0-5. From what I've read, you are not supposed to conduct a ...
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### Can I remove a dummy variable when it is not significant by itself, but its interaction with another variable is?

I have the following model based on the financial returns of a company as a dependent variable of a stock market index, and a dummy variable interacting with USD exchange rates to my currency. The ...
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### How to interpret coefficients of zero-inflated poisson regression with factor (ordered) variables?

I have data on breakout of diarrhea in 67 villages. First, I wanted to use number of diarrhea cases divided by number of households in the village as my dependent variable. then, my independent ...
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### What are other ways to say “cutting off 2.5% from the tails”? [closed]

I was reading a text that state Cutting off $2.5\%$ from the tails of these simulated distributions gives us Bayesian interval estimates of $\mu$ and $\theta$. I was wondering what are other ways ...
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### How to interpret B when x is squared?

My OLS regression looks like this: $$y=\beta_0+\beta_1x_1+\beta_2x_2+\beta_3(x_3)^2+\epsilon.$$ I do not include $x_3$ linear because it vifs with squared value and without squared value I have ...
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### Only the intercept is significant in regression model (with dummy variable?)

This is a similar question to Intercept significant but not the variables in GLM, but in more detail: my model's dependent variable is change in population density of a state, and the independent ...
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### Chow test results interpretation

I am analysing time series data right now using gretl, and want to test for a structural break, but I am not quite sure how I have to interpret the results. Let's say I have a wheat price and flour ...
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### How to interpret the ratio between a coefficient on a dummy and the coefficient of a log income variable?

I was reading this paper by Kahneman & Deaton: Kahneman, D., & Deaton, A. (2010). High income improves evaluation of life but not emotional well-being. Proceedings of the national academy of ...
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### How should I interpret this equation? [duplicate]

I got this equation by predicting grassland biomass growth from precipitation and soilnutrient. How can I convert it into original power function and how to interpret scientifically. ...
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### How to explain the result of this polynomial equation?

Lets say that I predicted plant productivity (logy) by precipitation (logx1) and moisture content of soil (logx2). my original data gives me the best result only after taking logarithm on both side of ...
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### How to interpret quadratic effects?

I have built a LMM (using LME4) for understanding how investment fund's structural characteristics (things like how much debt they have, their size etc) impacts upon performance. In the analysis, I ...
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### Expressing the difference between two rates

I have what I hope is a simple question about interpreting rates. Let's say I have two populations, and I know the rate of at which members of both are a particular demographic. I'll use gender. Let'...
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### Negative degrees of freedom in multilevel SEM

Can someone please help me understand why I have negative amount of degrees of freedom in my output? I am doing a multilevel sem in lavaan and have 1 level 2 variable and 3 level 1 variables Thanks! <...
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### ISLR - Interpretation of Confidence Interval in Linear Regression

I'm reading about Linear Regression in Introduction to Statistical Learning (Chapter 3) I see the confidence interval defined as A 95% confidence interval is defined as range of values such that ...
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### How do I interpret the random effect in my mixed-effects model?

I have run a linear mixed effects model with individual as a random effect. I have three separate measurements of each individual. The random effect is significant, ...
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### Multilevel analysis - interpretation not significant at level 1

I'm doing a multilevel analysis for the first time for my master thesis. The goal of my study was to create behaviour change through an intervention. Participants are measured for behaviour at 3 ...
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### Violinplot vs. permutation importance: interpreting differences

I'm analyzing the Titanic dataset, and I've been trying to understand the predictive power of the Age feature relative to passenger survival. My intuition is that younger people had a higher chance to ...
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### Help in Binary logistic regression

I am doing an analysis of my big data on diabetic patients (n= 168615). The dependent variable is HbA1c blood test. I want to run binary regression on two groups of the dependent variable (HbA1c ≤ 7% ...
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### Non-intuitive results from glm

I conducted a reciprocal transplant experiment to look for local adaptation of aphids populations on their host tree populations. I have 3 populations of both aphids and trees (and each aphid ...
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### Interpretation of Nominal Scaling in PLSPM

I used nominal scaling in PLSPM in R and I am uncertain how to interpret the results. I made a minimal code example from the satisfaction data set and made up a nominal value for color (red, blue, ...
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### Interpreting a 2 x 3 design with two empty cells

My psychology grad student and I have a study conducted in three different countries using two different method variants. Neither country nor method variant is a predictor of focal interest, but might ...
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### Interaction between 3 categorical variables - one with multiple levels

I am looking at how a continuous variable is affected by 3 categorical variables specifically if there are any interactions between two of them or all three of them (Yes I understand there are post ...
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### Cross validation for timeseries interpolation

I am trying to calculate the MSE from interpolating few data points obtained from a sensor. I am considering 100 datapoints and applying 10 fold cross validation to it. For explaining what i am doing ...
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### Interpretation of Betas and alphas in a VECM

Imagine I set up a VECM where there is only one cointegrated vector among three variables A, B and C and the vector of betas B1, B2 and B3 is (1,-0.25, -0.4) and the alphas a1, a2 and a3 are -0.5, -0....
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### Interpretation of NN output?

I am using a standard NN for a classification task. The ouput is a score ranging from 0 to 1. Seeing different techniques to go back to a probabilistic model, I wonder how to interpret the score and ...
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### How to interpret impulse response analysis in VAR when using standardized variables?

How to interpret impulse response analysis when using standardized variables (ie., subtracting the mean and divide by standard deviation) in vector autoregression analysis? The reason why I ...
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### interpreting coefficient on the interaction term

if i have an equation like this $$\log(wage)=\beta_0 + \beta_1*height + \beta_2*weight + \beta_3*(height*weight) + \beta_4*SAT$$ and i am having a problem solving this question. "interpret the ...
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### How to interpret coefficient if the independent variable has negative values?

I have a simple OLS regression: Y=a+B*X+epsilon X is the percentage change in house prices and has negative values (except in the 99th percentile). If the sign of 'B" coefficient is positive, how ...
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### Difference between null and saturated log-linear models

I have data from an experiment testing the number of 'cases' at each of three measurement points (0, 12, and 24 weeks). I am interested in whether the proportion of cases across these measurement ...
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### Model Not Performing Well On Validation Data - Customer Attrition Modeling

I am modeling customer churn for the online subscription. I looked back 90 days into customers’ data, using number customer watching behavior etc. I get a pretty strong model based on test data. <...
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### Coefficient Interpretation when dependent and independent variables are percentages

I have built a linear mixed regression model with fund returns (measured in percentage ie. 0.01 denotes one percent) as the dependent variable. For the independent variables I have percentage level of ...
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### What statistical parameters to use to spatially compare rasters?

I have at my disposal four models (Model 1, Model2, Model3, Model4) that simulate a parameter (the density of drainage) in a 7.5 'grid (about 14 km * 14 km) on the same domain (watershed) confer ...
87 views

### How to interpret Emmeans results

I have used the emmeans() package to calculated the difference between the difference of estimated marginal means. I did this by first calculating the EMMs of location|treatment, and then the ...
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### Interpretational value of regressors affected by extreme multicollinearity

Say I have a regression where pairwise correlation between two regressors is close to 1 (e.g. 0.98). In some estimation methods (e.g. OLS) this would immediately induce inability to estimate/...
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### Cronbach's alpha interpretation - dichotomous data

I have calculated Cronbach's alpha in R using the psych package and I am trying to interpret them now. I want to properly understand this, as it is part of my ...
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### Is my interpretation for Wilcoxon Signed Rank test correct?

I ran a wilcoxon signed rank test on paired samples where the outcome variable was a test score. The samples were paired by as siblings (younger and older sibling). I have a problem interpreting the ...