# Questions tagged [frequency]

The frequency measures the number of times an event occurs in a data set.

356 questions
Filter by
Sorted by
Tagged with
49 views

### How to accurately estimate the probability of a rare event in a large dataset?

I have a dataset of 30,155 names and out of curiosity I verified that the longest name has 68 characters, which is quite big considering the mean and SD were 24.78 and 5.64, respectively. Based on ...
• 141
23 views

### Check if the charachter frequency of two "words" are significantly different

Although the problem as in the title might sound a little odd, I have a dataset where each entry includes two "words" that include 1000 and 1100 characters respectively. For each entry, I ...
• 23
26 views

### How to easily convert frequency data into raw data (large dataset) for t-test? [closed]

Statistics goal: Determine if the difference between two datasets is statistically significant. Dataset description: The data is available in the form of particle size (mm) v. particle count (...
15 views

### How to compare frequencies of type of stress events with repeated measurements over time in a weekly diary study?

We hope you can help clarify whether a Chi-square test of equal frequencies (in SPSS) would be the correct choice. Study participants have reported experienced stress events (text variable) in a ...
25 views

### Can I use Chi^2 to test significance in frequencies of three groups?

I have conducted fieldwork on tree seedlings in plots with different treatments: natural, managed, and fertilised. The dataset consists of the frequency at which the different tree species occur. I ...
• 528
232 views

### Best plot in R for count data with a broad range and lots of low frequency data

I have a data set that looks like this, in reality there are about twenty categories with a count of 1: ...
• 195
102 views

### Chi square test (or alternative) for mixed design categorical data

I have the following question: I collected the number of different symptoms at two time points (Baseline BL, Follow-up FU) in two groups (Control Group CG, Intervention Group IG). So, there is a ...
164 views

### Can I use logistic regression if one category of the dependent variable has a very low frequency?

An example of 100 subjects. Let's say I wish to study the impact of literacy levels (0 as limited and 1 as adequate), anxiety levels (0 as no anxiety and 1 as severe anxiety) and sex (0 for female and ...
• 367
30 views

### Is it possible to test for causality using Bayes theorem and frequency tables?

I am used to test causality using Granger test with time series. But I don't know how to test for causality with categorical data. For instance, I want to test if a high level of hardskill causes a ...
• 23
22 views

### How to test if a particular frequency is significant or not in a fourier frequency spectrum

I have got a timeseries data with which I plotted a frequency spectrum and I could eyeball all the significant peaks (significant frequencies) in the plot. But I want to do this for a spatial data (...
362 views

### Goodness-of-fit test for very skewed data [closed]

I am working with two quite large datasets (9000 obs and 3800 obs). Each observation has been grouped into 1 of 12 categories and I am looking to test if the frequency of categories in the smaller ...
13 views

• 6,244
1 vote
45 views

### Which statistical test to compare frequencies across groups?

I am running an analysis in which I want identify if there are significant differences in the features that make up two groups: people that commit crimes against children and people that commit crimes ...
• 11
80 views

### How do I decide the frequency of data capture for modeling?

I plan to capture data to predict energy consumption in a food processing plant. I want to capture production details such as how much each category of food is produced, what is the machine's output, ...
• 223
39 views

### How to model discrete bivariate probability distributions with a 'triangular' support?

I'm really at a loss as to what this is called, so please tell me if this is a duplicate and I'll be happy for the question to be deleted if that is the case (though I likely will still have follow-...
1 vote