# correlation analysis

1. ### Causation, correlational analysis and prospective studies

I am writing a systematic review of prospective studies, where two studies with two measurement points say that they cannot infer causation because of their correlational analysis. One report covariate analysis and path model, the other multiple regression analysis. But they don't explain why...
2. ### How to create a Pearson Correlation and others with this data?

Hello everyone.. I am struggling to create a Pearson correlation with this data below: My goal here is very simple, identify correlations between each module and the severity number. (Its related to Defects) I tried Pearson correlation but did not work out well. Can someone give me a hint of...
3. ### How to interpret relationship between variables when one value has a disproportionate number of samples

Hello all! I am in the beginning of a statistics project in my master's course which will be focusing on regression analysis later on. We have not yet done any regression analysis but have been asked to turn in a paper on initial findings and analysis, but I am having a lot of trouble in how I...
4. ### Correlation - need help to understand which method nto use for before after scenario

I have three parameters, 1. Attachment level with phone (categorical data eg. Highly attached, detached, highly detached etc) 2. Hours spent using phone before covid (continuous) 3. Hours spent using phone after/during covid (continuous). Now what or how to correlate these three parameters to...
5. ### volatility analysis

Hello everyone, I want to write my thesis about the stability of stablecoins and need some help with my analysis. I want to analyse the volatility of stablecoins compared to the USD and Bitcoin. My Null Hypothesis would be something llike "The fx-rates of stablecoins to 1. USD and 2. BTC are...

Hi there, I'm doing my dissertation for uni and my hypothesis is that the 'lack of training affects confidence in performing CPR' and so I conducted a questionnaire which asked "How often does you practice ofter CPR training?" and they had options to answer 'monthly' 'every 3 months' 'every 6...
7. ### Spearman Rank + Quadratic Regression (spps) HELP! x

Hi, I'm trying to find out if there is a significant correlation between salinity and no. of Bivalves found on a shore. I did a Spearman Rank and this was my result: "There was a statistically significant correlation between Salinity and the number of Bivalvia individuals (Spearman Rank...
8. ### Help with statistical analysis for physio research

Hi I am an MSc student in physiotherapy. For my research study, I am looking to see the agreement between a patient's questionnaire and a physiotherapist estimate of the same score. So basically, the patient complete a ten part questionnaire, all scored 0-10. The physiotherapist sees the...
9. ### Testing association between categorical independent and ordinal dependent variable

Hello. I would like some insight into an association test I can do for a categorical variable - Vendor (GE, Siemens, Philips, etc) and how this factor may affect the outcomes (ordinal scores from 0 to 10) of the performance of an algorithm on the images produced by these machines? Does anyone...
10. ### Correlation Question

I have to do a correlation analysis for a paper and I don't have much experience in practical work. My data looks like this: The two variables have a linear (but not monotonic?) correlation but I think it is not normally distributed (last picture) and I wanted to ask if I can still do a...
11. ### Help URGENT deadline!! What data analysis method should I use to test the effect 1 variable has on 3 other variables ?

Hello, I’ve just joined and am in need of any help that I can get. Basically I wanted to test whether phubbing ( snubbing someone to use your phone) impacts relationship satisfaction, sense of self-worth and respect for your partner. Does anyone know what statistical analyses I would need to...
12. ### Need help with my thesis

Hi all! I am new to statistics (self-taught since I need it for my thesis) and I have a question that I haven't been able to find an answer to yet. For my thesis I want to find out whether there is any relationship between how students and their teachers answer a likert scale questionnaire...
13. ### Correlation evaluation

Is there a single statistic which can reflect the different importance between similar correlations, say 0.7, based on different sample sizes such as n=10 and n=1,000?
14. ### Correlation vs. Means Plot

Hey guys, for my master thesis I conducted an experiment and received for two variables means plots, that I will attache below. They were the result of two one-way ANOVAs. I wanted to test if the scores in the two variables differs significantly in three conditions. The next step would be a...
15. ### How to show frequency data in analysis using Spearman's Rank?

Hello, I am interested in finding out if there is any correlation between the the values that people ascribe to certain green spaces and the land cover type. (E.g Do people feel closer to nature in areas with water?). In my study I have a map of my study area and people can place up to three...
16. ### Bootstrapping pairwise not listwise, a problem with N

Hi! Hoping someone more statistically minded can help. I have a number of variables with different N (they are performance measures and some have been removed due to not understanding the task). I want to bootstrap the correlations but when I do this in SPSS it excludes listwise rather...
17. ### Which correlation test when researching the effect of previous success on change?

Hi everyone, I'm doing research on business owners, who have started multiple businesses. I had a sample of 2500 businesses and looked at the business owners' success rate from their first to last business. That gave me two groups: 1) business owners who were SUCCESFUL in their first business...
18. ### Association/ correlation binary and continuous data non-normal distribution

Hi, I want to perform an association analysis between a binary (dichotomous?) variable and continuous variable. The binary variable is whether something is present or not, "Yes" or "No"/ "1" or "0" .... etc. The continuous variable are numbers between ~150 and 170~. The continuous variable is...
19. ### Can you use correlation for percentages?

I have two variables: the number of employees who work from home in the firm and the number of independent contractors in the firm - and I have this data for 70 firms. I am trying to determine what statistical measure of association I can use to determine whether there is a relationship...
20. ### SPSS Correlation of single variable and independent variables

Hello, I am working in spss 23 and I'm stuck. I have data for which I am attempting to determine if certain color of a personality (there are 4 values) have a significant correlation with how respondents answered to 12 leadership styles. I have entered my data into SPSS...I just cannot remember...