Questions tagged [statistical-significance]

Statistical significance is a characteristic of a statistic viewed in light of a null hypothesis and a given significance level. It reflects whether the statistic belongs to the rejection region (is statistically significant) or the acceptance region (is not statistically significant).

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How can I perform evaluate how well a model fits data that spans many orders of (tiny) magnitude?

For some dataset, I am fitting a model and then looking to evaluate how well this model 'fits' the data. The data in most cases, will range several orders of tiny magnitude, pictured below my data ...
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Issue with bounded in probability

I have tried to prove the following problem that I read in the lecture and it seems not transparent to me. Suppose that $Y_{i}$ be independent random variables (with $i=1,2,3,...$). Each has the ...
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Usefulness of KS tests and other similar distribution comparing tests

I am working on a machine learning binary classification problem. I have an outcome variable status called as loan paid and <...
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How many values should one validate to achieve a desired confidence?

If I have a set of 100 values which have been programmatically calculated and I would like to validate those calculations by performing them manually, how many manual calculations would I need to do ...
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Statistical test when comparing oversampling to no oversampling on ANN

I use 70% of the dataset for training and 30% for testing. I use oversampling on the training dataset with an ANN. I use the test dataset on my ANN and look at the performance of oversampling against ...
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Is confounding a source of Type I errors?

I would be interested to explore the potential sources of Type I errors in randomised controlled trials. A key question in this respect is whether confounding can be understood as one such source.
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Unusally high F value ANOVA

I am running a one-way ANOVA to compare a numeric continuous variable between four groups, and getting a very high F-value. Below are the descriptives and code I used in R (I get similar values when ...
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Alternatives to linear model regression

Let's say I have a univariate linear regression model LMR in which ...
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How to compare variables with data from multiple experiments?

I have an experiment in which i compare the amount of attached bacteria in three different conditions. I have repeated this experimented three times, so now i have three datasets with the same data (...
1 vote
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