Questions tagged [anova]

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Different runs of One Way ANOVA give different results in Python (on the same data, using stats.f_oneway)

I wrote the following code: The data I am running this code on is randomly generated, but I use fixed seeding. Each time I run the code this function gives different results for F statistics and ...
0 votes
2 answers
26 views

What model should I use to predict monthly sales by products?

I am trying to predict monthly sales by product based on a plethora of variables. There are 4 predictors. One is categorical (month) and the other three are numerical. One of the variables is just ...
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Create box plot with anova model and different p value

I have created box plot which looks like this Code - ...
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0 answers
14 views

is my p-value of 0 for ANOVA and chi-square test valid or I made some error in providing input data

I'm working with NYC Customer service dataset and trying to perform ANOVA and chi-square contingency test for my cleaned data. But somehow I'm getting p value of 0 in both cases. As per my ...
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0 answers
9 views

Analysis of Variance of different groups

Im working with the following dataset: ...
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0 answers
20 views

Hypothesis test for classification model

I have a model that outputs 0 or 1 for interest/not-interest in a job. I'm doing an A/B/C test comparing two models (treatment groups) and none (control group). ANOVA for hypothesis testing and t-test ...
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0 answers
3 views

How can I disaggregate the impact of a group of variables using machine learning?

I have a problem where the target variable Y (continuous, values: 0-1) is controlled by large number of variables. These variables can be grouped by the nature of the data: ...
2 votes
1 answer
149 views

Score of ANOVA in selected features

I selected features using ANOVA (because I have Numerical data as input and Categorical data as target): ...
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1 vote
0 answers
108 views

Levene test for equal variance

I would like to run one-way ANOVA test on my data. I saw that one of several assumptions for one-way ANOVA is that there needs to be homogeneity of variances. I have run the test for different data-...
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2 votes
1 answer
76 views

What conclusion can I get when the variable is influenced by other but there isn't any correlation?

I am doing an analytic exploratory analysis. If the target is a continuous variable and the attributes are all categorical (discrete values), in order to know if exist any influence on the target from ...
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1 vote
1 answer
791 views

When should mutual information be used for feature selection over other feature selection methods like correlation, ANOVA , etc?

I have a data set with categorical and continuous/ordinal explanatory variables and continuous target variable. I tried to filter features using one-way ANOVA for categorical variables and using ...
0 votes
1 answer
17 views

pass variable length argument to mstats.kruskalwallis

I am trying to run kruskawallis test on multiple columns of my data for that i wrote an function ...
0 votes
1 answer
321 views

What does it mean to have 1 degree of freedom in ANOVA test?

So I used python to run multi-factorial ANOVA analysis on a data set. I first used a ols.fit() and then the anova_lm function. I realized for the variables I am analyzing their degree of freedom is 1. ...
1 vote
1 answer
110 views

Question on ANOVA and Correlation/Association

I've been working on examining statistical relationships between variable: Pearsons, Spearman's for continuous variables Kendall's Tau, Cramer's V for ordinal/nominal variables. I know there's many ...
6 votes
3 answers
6k views

Should features be correlated or uncorrelated for classification?

I have seen researchers using pearson's correlation coefficient to find out the relevant features -- to keep the features that have a high correlation value with the target. The implication is that ...
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