Questions tagged [hypothesis-testing]
The hypothesis-testing tag has no usage guidance.
17
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30 views
How long have people been debunking the P value (statistical significance) as commonly used in the media and human sciences? [closed]
I have been puzzled for a long time at the way psychologists and medical researchers state that they have 'significant' results, and at the way this statement is relayed to the public who are misled ...
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0answers
6 views
How to do a t-test on rare events distributions?
I have a dataset, which contains several features (feature_1, feature_2, ..., feature_n) and ...
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0answers
16 views
How to apply Hypothesis test on time series?
I am working on a project that is related to Wikipedia's revision history. I have around 10 time-series and each one represents how the relative frequency of positive words changes over time.
I need ...
1
vote
1answer
73 views
p-value and effect size
Is it correct to say that the lower the p-value is the higher is the difference between the two means of the two groups in t-test?
For example, if I apply the t-test between two groups of measurements ...
3
votes
2answers
83 views
How do you use KS-test in a data science report?
I'm writing a data science report, I want to find an exist distribution to fit the sample. I got a good looking result , but when I use KS-test to test the model, I got a low p-value,1.2e-4, ...
5
votes
1answer
97 views
When to use which multiple testing correction?
There are a large number multiple testing p-value correction methods. e.g.:
...
1
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1answer
34 views
How to deal with missing values in the survey data to perform Paired sample t test
I have a dataset where I have 100 respondents. Each respondent has to give response on service quality of Health care equipment. Is it providing efficient services to the patients?
We have two ...
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0answers
18 views
How to think about design of experiments in the context of more complex machine learning [closed]
I have experience with multifactor DoE, but in the context of optimizing treatment of a single or or a small number of populations. Are there any articles people recommend to help get my head around ...
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37 views
Hypothesis Testing - Median Test for linear regression model given standard error and co-efficient
I need help approaching this particular problem on hypothesis testing.
A researcher believes that a diet high in raw cornstarch would increase the median blood glucose levels by 20. The diet can ...
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14 views
How to compare between two datasets of lexical density?
I have two dataset from two different texts representing lexical density as a proportion based on a corpus. Both datasets are represented in the images below. Now, let's suppose I want to know which ...
1
vote
1answer
37 views
How can I compare the grammatical complexity between two texts using their sentences dependency length?
This is a continuation to the following thread.
I have two texts, common English texts such as news articles and informative texts versus a technical textbook. I want to compare the grammatical ...
0
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14 views
statsmodels: significance test (claim test), one sample, mean value - any function available?
We sample the bacteria contents of drinking water. Fact: when bacteria contents > 88, water is not safe to drink. These are the samples we've obtained:
...
0
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0answers
16 views
Python: significance test (claim), one sample, test the proportion - simpler code
We have two sheets with pictures of dogs and dog owners. On one sheet - owners and their dogs are associated correctly. The other sheet shows random associations between owners and dogs.
61 students ...
0
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0answers
27 views
Hypothesis Testing on Prediction from Random Forest Classifier
I used a random forest classifier to predict 0,1, 0 indicating non-prevalence of a disease, and 1 indicating the disease is prevalent. I want to see if having a feature would increase the chance of ...
2
votes
1answer
103 views
Interpreting the results based on Granger Causality test
I am trying to use Granger Causality test: https://www.statsmodels.org/stable/generated/statsmodels.tsa.stattools.grangercausalitytests.html
to assess whether "positivity score" affects ...
2
votes
1answer
30 views
Permutation test on two groups
I am trying to use a permutation test to test my hypothesis.
I want to make sure I am understanding concept of permutation correctly.
I have control and experimental group. Then I combine them and ...
8
votes
2answers
467 views
A/B testing: How to calculate p-value on post test segments?
My question on A/B testing is about doing post test segmentation analysis.
For example:
I run an A/B test on my website to track bounce rate. On the
treatment group, i put a video to explain ...
