regression

Hello dear forum members, I am conducting a replication study based on the paper by Gao, G. G., Greenwood, B. N., Agarwal, R., & McCullough, J. S. (2015). VOCAL minority and silent majority: How do online ratings reflect population perceptions of quality. MIS Quarterly: Management Information...

I have a question on a sample test for my upcoming prelims and I am unsure how to answer a question, scenario and questions below... A study measured dental measurements from the center of the pituitary to the pterygomaxillary fissure (measured in mm) for 11 girls and 16 boys at ages 8, 10, 12...

Hi, I am working on a replication of a research paper where I have to compile my own data to copy the regression done in the research paper. I have never done a regression like this before and I am not sure about the data I chose - I would appreciate any help and input. All the variables I...

Dear all, For my Master’s thesis, I have some difficulties with the statistical part of my research. I want to analyze the relationship between two variables: Investment in Innovation (R&D) --> Concentration Ratio 1. Research & Development (R&D) Investments in an industry 2. Concentration...

Hey guys! So for an assignment I have to compute some long-horizon predictive regressions. Univariate, bivariate and multiple. We use MatLab, but my MatLab skills are very very basic and I need your help, because i can't find the right answer. I collected all my monthly data (From 1963:07 to...

I have data of 11 predictors and 1 response with 1000 observations and i'm doing linear regression on the data. I also have the measurements errors for the predictors (not for the response) and i'm struggling in find out hoe to count for them in the total error estimate, because basic multiple...

My question regards the best way of comparing two groups for differences in the levels of several quantitative parameters. Here, for only one of the groups there are 4 repeated measurements at different intervals. The data -We have two groups we want to compare: one consists of ~200 patients at...

Hi! I have a question on the coding/use of categorical variables: In short, I have two control variables in an SPSS regression model. One is participant (15 levels, or participants) and one other categorical variable (10 levels). And there is just one predictor variable in the model. I've tried...

I'm using a mixed-effects regression model to account for intragroup correlation. Can this be used in both univariate and multivariate analyses?

I am doing some analysis on relationship between bond spread and the factors (like bond rating, originator information, duration etc.). I can do a regular linear regression like spread ~ rating + originator + duration, but my friend using the “multiply way”, and I am not sure if there is any...

I hope you all had an amazing holiday weekend. Currently, I have a dataset that includes company name, company type, service provided, charge for the service, and this is all by month. For example, Company X, type of company is a bank, services provided are debt portfolio evaluations at $100 and...

I'm running a regression analysis to understand the impact of income (predictor variable) on scores on an instrument (dependent variable). The only problem is that I don't know each individual's income; I've estimated it using their ZIP code. I've experimented with a few different methods to...

Hello good people of the internet. I was wandering if someone could help me to validate if my data is in control or not? The data consist of a current output, used by a motor to open and close a lid 1000 times in total (1000 cycles). every time the lid opens and closes once I want to observe...

So I have 11 predictors and one response variable. I am wanting to look at the relationship (see what predictors effect the variable) and as I can't put all my predictors into multiple regression, I thought subsets would be best. Unfortunately when i enter all my data it comes up with the...

So I have 11 predictors and one response variable. I am wanting to look at the relationship (see what predictors effect the variable) and as I can't put all my predictors into multiple regression, I thought subsets would be best. Unfortunately when i enter all my data it comes up with the...

I am currently writing my master thesis and in the process use the Fama-MacBeth (1973) procedure to obtain risk premia for my factors of interest. Data structure: I have panel data with excess returns for 50 portfolios (my cross-section) for each point in time (time-series). In the same panel...

The preconditions for a simple mediation analysis according to Hayes (2013) are statistically significant associations between X (the independent variable) and M (the mediator) as well as associations between M and Y (the dependent variable). In the case of a dichotomous independent variable...

Hello, I need help determining what analysis to run. I have 2 independent variables (a control and experimental condition) with 4 dependent variables (one scale with 4 subscales, each of which I assume should be treated as a dependent variable.) This is Likert data (ordinal) so I thought I...

x 1, 2, 3, 4, 5 y 35, 14, 21, 28, 7 The book says the test statistic is -1.30 I am getting other answers through my TI 84 and Excel TI 84, I use 2-Sample Test and get -3.6 Excel, using =T.Test two tailed, Paired, I get 0.029 Any suggestions?

I'm facing the following situation: We conducted a marketing campaign with three groups: 2 test vs 1 of control, where two different type of coupons sent to the two test groups, 3 euros vs. 6 euros. I understand that the best way to test the difference in proportion is a GLM model with binomial...