correlation

G’day Statistics Forum I’m having a little bit of trouble with the statistical analysis segment of my honors thesis proposal and was hoping one of you helpful folk might be able to offer some insight. I believe this sounds more complex than it actually is, so bear with me cause I am really...

Question 1 - I a working on developing a model to predict employee turnover. The variables that I have are age, tenure, job satisfaction, role clarity etc. Through research papers I have found the correlation coefficient for these variables but I am not sure on how to develop a model around it...

Hi, I have the following profitability data: 1) Rankings of profitability for customers: 1, 2. ... 15 2) Categories of same customers, grouped after profitability (from 1 to 5): 5, 5, 5, 3, 4, 5, .... 5, 4 (15 in total) I have troubles finding the Kendall Tau...

Not homework BTW ... I want to measure the processing time (performance) of some software under a set of fixed conditions. I have a means to log the start and stop of the processing. The only possible factors are some uncontrollable (noise) factors, e.g., the CPU and memory usage. Then there is...

I have a paired data set of known age and estimated age, and correlation tests show that there is a strong correlation between the two, but what I want to know is, does that mean the estimates are accurate? My thinking is no, correlation cannot tell you if the estimated age is accurate, but...

Hi guys! I am a little puzzled. :confused::confused: I am carrying out research on cyclists perceived benefits of the supplements they take and comparing them to what is scientifically proven. So far I have inserted all my data into SPSS and I have grouped all the variables accordingly...

First of all thanks for your time reading this post. I got some issue with correlation analysis that I am not able to solve at all as for more people I ask, different opinions I get (including opinions read on this forum). I will try to explain my situation: I go 1200 data from different...

Hi all, I'm currently running a Psychology experiment: the effect of background music on memory and mood. I will be using SPSS to conduct two one-way ANOVAs (music + mood / music + memory), w/ planned comparisons. However, I also want to see the effect of mood on memory but I don't know how...

In a panel dataset of multiple years and multiple countries, what is best practice for running correlations among variables? I know that pooling by both countries and years is not recommended. Is restricting instead by both country and year the preferred method? Or just by either one, country...

I was using the cross correlation function in R (ccf) until now to discover correlations and lags between two time series. I was wondering if I can use all other correlation metrics for time series as well or are there any restrictions with time series? For example I want to use Spearman's...

Hello, I have a table of approximately 1000 pairs of values. x is an integer between 0 and 365, representing birthday y is an integer between 1 and 4, being a measure of achievement. I am investigating whether there is positive correlation between x and y. I am not sure which test to use. I...

Hello! I am working with an occupation cohort exposed to radiation and have a dataset containing a number of variables on each worker, including their job title, year of birth, radiation exposure level, and the date on which the radiation sample was collected. Some of the radiation exposure...

I have a data set consisting of data from 7 islands. I have measured the average gene flow between each pair of islands as well as the difference in temperature between each pair of islands. I want to know whether these to variables (average gene flow and "thermal mismatch" are correlated)...

Hi, I don't have deep knowledge in statistic, and I have been googling for an answer to my question, but i got no luck. Hopefully i found an answer here regardless to how stupid my question might be... I knew from my little knowledge, I can determine the correlation/association/dependency...

I am getting desperate. Computing a cross-correlation function on R is easy: ccf(x,y, ...) and it's done. But what about computing a Partial cross-correlation function? It's crazy. I've been looking everywhere, but cannot find a function for doing this on R. :-(. By any chance does...

Hi Folks, So I have data that looks like: myData <- structure(list(total = c(0.154, 0.223, 0.252, 0.157, 0.196, 0.252, 0.198, 0.162, 0.222, 0.135, 0.196, 0.193, 0.192, 0.274, 0.177, 0.17, 0.214, 0.214, 0.107, 0.22, 0.177, 0.177, 0.165, 0.226, 0.196, 0.267, 0.174, 0.12, 0.159), totalse...

I've been working on a study with workers at a certain plant, to test their safety awareness. During a meeting, everyone is asked to select a card that represents the risk that they feel is most prominent for a certain task. There are 15 different cards Our hypothesis is that over time...

I'm trying to work out the correlation between movements in prices of 2 products i'm tracking. I will extend this to around 20 products but just want to get the basics done first...The problem I have is that the prices I have are sometimes negative or 0 and this causes a problem with log...

I have done a study on whether personality and demographics predict interaction on facebook brand pages. I have used a Big five personality scale and the demographics include, sex, age, marital status, employment status and education level. Interaction was measured using 6 questions, such...

Hello, I am doing my homework for statistic course, and I've got some problems with a test. So I put these data in excel and then calculated covariance...and it's zero! Am I missing something? Can you please help me solving this issue? Thanks a lot, Best regards