Questions tagged [statistics]
Statistics is the mathematical study of using probability to infer characteristics of a population from a limited number of samples or observations. Non-programming statistics questions are off-topic here, and they should be posted at https://stats.stackexchange.com instead.
statistics
16,447
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How to deal with word counts of zero when calculating Pointwise Mutual Information (PMI) for word cooccurrences in Natural Language Processing
I have a co-occurrence matrix of words in a text (two words x and y are considered co-occurring, if they both occur in a context window of w words). I want to calculate the Pointwise Mutual ...
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How to code an algorithm for Linda Index calculation in SQL (Apache Superset)?
I collided with a real obstacle trying to bring the calculation of Linda index in Apache Superset SQL Notebook. Let's assume we have a table for 6 firms in one region for one year with their market ...
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Python - Check if the last value in a sequence is relatively higher than the rest
For a list of percentage data, I need to check if the last value (90.2) is somehow higher and somewhat "abnormal" than the rest of the data. Clearly it is in this sequence.
delivery_pct = [...
- 25k
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Hausman test report [closed]
I've been working on a research project using a multi-level regression model, and I'm currently figuring out how to present the Hausman test results. I've seen some papers where authors mention doing ...
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How to perform two-sample one-tailed t-test with numpy/scipy
In R, it is possible to perform two-sample one-tailed t-test simply by using
> A = c(0.19826790, 1.36836629, 1.37950911, 1.46951540, 1.48197798, 0.07532846)
> B = c(0.6383447, 0.5271385, 1....
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How to prove expected residual time formula
Can anyone help me to show that for a general random variable X with a fixed distribution to model the time interval between the independent events. The expected residual time, which is the time one ...
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Variation in the total number of samples when performing multiple fisher exact tests [migrated]
I have dataset of 2 time points. In each time point I have to compare the counts of different components at each position (number of positions =1000). I used fisher exact test to compare if there is a ...
- 423
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Statsmodels OLS Regression: Log-likelihood, uses and interpretation
I'm using python's statsmodels package to do linear regressions. Among the output of R^2, p, etc there is also "log-likelihood". In the docs this is described as "The value of the likelihood function ...
- 497
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How to compare variance of distance between two treatments over time?
I am interested in understanding how my variable (distance) changes over time between two treatment groups. I now want to compare measures of variance for distance between the two treatment groups, ...
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Error obj is not defined with pyinstaller when crating an EXE
I've created a script that calculates the p-value using the Sum Rank method, when I run the scripts it's all ok, but when I run the .exe from command prompt, I get the following error:
D:\...
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How to check if a variable varies across timestamps or across samples
Let's assume we have some time-series data where every person (sample) has measurements for 2 variables (Var1, Var2) for three timepoints. Following is a dummy representation of the data.
Is there a ...
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Using R, how do I perform bonferroni type test to decide which areas have move coronavirus cases than expected after performing Chi-square test
Using R, I have to perform a test to test if the number of coronavirus cases is evenly distributed in some areas in respect to those areas populations and then if they are not evenly distributed with ...
- 3,671
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Hovmoller Plot in Python not showing correctly
I am trying to create a Hovmoller plot in Python on Google Colab, but Hovmoller is not showing as it should show. It's showing vertical different color boxes
how to fix this?
Here is the code that I ...
- 195
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What distribution should I use? [closed]
I'm new to statistics and need to create a probability distribution with the following study:
*Note: Due to proprietary reasons the example given below is the best representation of the real data.
...
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4
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90
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Rename function in Python
Now I'm trying to learn about pandas package in python.
but using rename function, I have some problem.
mushroom = pd.read_csv('./mushroom/agaricus-lepiota.data', header=None)
mushroom ...
- 28.1k