# Questions tagged [analysis]

For questions dealing with the applied analysis of a specific dataset or design of experiment. Posts tagged analysis are requesting statistical consulting assistance from the network. Questions tagged analysis need to be phrased appropriately.

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### What is the difference between data mining and statistical analysis?

What is the difference between data mining and statistical analysis? For some background, my statistical education has been, I think, rather traditional. A specific question is posited, research is ...
1k views

### When do we "stop" using multiple correction techniques?

I understand when performing a simple t-test, we typically control the type -1 error rate at $\alpha = .05$. This signifies that if the null hypothesis holds, the data will "incorrectly" reject the ...
1k views

662 views

### Multiple regression analysis on a sample size of 21

Am I allowed to use multiple regression analysis on a sample size of 21? I did the Shapiro - Wilik test on all four of my variables (p>0,05 on all of them). I also checked their linear distribuon and ...
16k views

### Yes/No question statistics

I'm very new to statistics and am trying to figure it all out! I have a number of yes / no questions answered from a survey. (a) I want to see if, in each question, there is a statistical significance ...
275 views

### Calculating the Mean of an Ordinal Variable Question

I have distributed and analyzed a survey regarding teaching quality. For some of the questions, I ask how often a given teaching method is used. When doing this I ask them to select one of the ...
427 views

### Can one perform a meta analysis on solely the results of a study, without the use of raw data? [closed]

If not, since a systematic review would be the next option, are there any analyses you can conduct on the results of the studies that one intends to analyze
6k views

### How to analyse survey data to find customer satisfaction from weighted scores?

I have survey data from multiple customers, where the customers have scored on a scale each question from 1 to 10, to indicate how much they agree with a specific question - 10 being the heights score....
62 views

### How do i interpret this Scatter Plot

I'm researching on the relationship between Scholarship and years. I have scatter plot below. The x axis is equal to the total amount of scholarship for a student. The y axis show the term a student ...
45 views

### What analysis do I do? (Wage, education, gender)

I'm doing research on pay in function of degree (master vs. doctorate) and gender (man vs. woman). My research consists of 1 dependent variable: salary (salary varies from 210 euro to 12.000 euro in ...
246 views

### Inventory forecasting algorithm for wines?

I'm trying to figure out a good inventory forecasting algorithm for wine sales. I have the following characteristics so far: Wine sales are cyclical and not seasonal Have incomplete time series: ...
4k views

### Is weight still a continuous variable if its measure is rounded to an integer?

So it is obvious that weight is a continuous variable as it can be quantified with decimal precision;like 10.2 kg and 3.0122 kg. If we were to round it to an integer like 10 kg and 3 kg. Would then ...
1k views

### How do I avoid multiple t-tests (or is it ok to use multiple t tests here?)

I've searched around CV for a bit, and have not found a good answer as to what test to use instead of multiple t-tests in my particular situation. I am interested in comparing mean size (of fish) ...
35 views

### Using phi as a measure of correlation for categorical analysis

I'm working on a data analysis project where I've been asked to measure the association between specific values of categorical variables, and I wanted to make sure my thinking was correct. So for ...
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### Measuring solution quality and allele impact on population fitness for a genetic algorithm

Situation: Let's say you're running a genetic algorithm to improve the way people are interacting with an online service. The alleles in each individual determine the exact behaviour of the service, ...
2k views

### How do I interpret this ACF and PACF plot?

I am very new to time-series analysis and have got some time-series data regarding product prices. The data set is monthly data collect since 1993 to 2014. I have tried plotting the ACF and PACF but ...
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### Questions about Data Analysis [closed]

For my research I'm examining whether applying a certain promotional intervention improves the amount of misshapen products bought. The study contains of two parts. In part 1 Scanner data from ...
267 views

### How to examine the relationship between categorical variables with several levels?

I would like examine if the job satisfaction of part-time workers is higher or lower compared to full-time workers. My dataset consists of 4125 cross-sectional observations. independent variable: ...