regression analysis

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    MC on Regression Analysis

    I wanted to check over my answers based on these practice questions. Thanks (1) True/False: Clustering is an unsupervised learning problem. (2) True/False: Principal Components Analysis can be used to create a low dimensional projection of the data for use with clustering. 3)...
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    linear regression practice

    I wanted to check over my answers based on these questions Thanks (1) True/False: Clustering is an unsupervised learning problem. (2) True/False: Principal Components Analysis can be used to create a low dimensional projection of the data for use with clustering. 3) True/False...
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    iPod Track Listening & Biological Samples— Within-Subjects Test/Regression?

    I am analyzing data in which participants listened to iPods and provided biological samples on the same days. The iPod Listening Intervention was 1 week. The biological sample collection was 4 days within the 1 week. There was no intervention/control group. All participants in study were given...
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    Regression Analysis Practice

    I'm working through some practice on regression analysis and wanted to confirm. My attempt is below. Thanks (1) The correlation between two orthogonal predictor variables is: a. 1.0 b. 0.0 c. 0.5 d. Correlation does not exist. (2) Consider a regression model with...
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    Analysis of parental leave

    Hello, in my bachelor thesis i have to use regression analysis, i used a questionnaire to collect the data. Dependent variable is the time that respondents have factually spent on parental leave.However, i didn't set this question clear, and now i have answers from respondents about when their...
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    AIC computation

    (1) Compute the Akaike Information Criterion (AIC) value for the linear regression model Y = b0 + b1*X1 + b2*X2 + b3*X3. The regression model was fitted on a sample of 250 observations and yielded a likelihood value of 0.18. (a) 9.49 (b) 11.43 (c) 25.52 (d) 15.55 (2)...
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    Geographically Weighted Ordinal Logistik Regression

    Hello, I'm studying about Geographically Weighted Ordinal Logistik Regression. but I have trouble getting a book or reference that is related to it. does anyone know about reference from the Geographically Weighted Ordinal Logistik Regression? thank you:)
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    Multivariate Linear Regression

    I wonder if anyone can help me. I am trying to do a multivariate linear regression, I have 3 dependent variables with 2 separate time points for each, how do I condense this into three variables so that I can look at the time points together.
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    Correcting for repeated testing with 4 mediation analyses?

    Hi guys, First time poster here, sorry if I post this at the wrong spot or something like that. For my thesis if have the following 4 hypotheses: 1. Emotion regulation (partially) mediates the relationship between cognitive behavioural therapy (CBT) and social anxiety severity. 2...
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    GOF Analysis/Discussion

    What actions constitute an analysis of goodness-of-fit for a regression model? What are the typical graphical displays used in this analysis of goodness-of-fit? Why do we assess the goodness-of-fit of a regression model? What can go wrong in the interpretation of the results and the...
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    Regression Analysis

    I was working through the following set and needed some clarity on them. I attempted these questions (with my answers below) but need help to see which ones might be incorrect and if so, WHY Thanks (1) Linear regression assumes: a. The relationship between X and Y is a straight line...
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    I need help with my regression analysis for research capstone.

    Hi all, I'm new to regressions and also new to posting here. My topic is: How have E-books Affected College Textbook Prices? My hypothesis is: H0: The CPI for college textbooks will fall with the introduction of the e-book because increased innovation and competition causes an...
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    Which test should I run using SPSS ?

    Question: Which (in) accuracy is the waist circumference (LEO) of a grown man be predicted based on its fat (VETP)? Which (in) accuracy of the waist circumference (LEO) of a mature man can be predicted based on the total energy consumption (EAVT)? --> Perform these analyzes for both...
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    Moderation at some levels of moderator but not in overall model

    Hello I have three continuous variables one of which I have hypothesised to be a moderator. In the overall regression model there is no significant result for the product of the IV and predicted moderator, R2 change = .00, F change (1, 118) = 0.46, p >.05. That is, there is no overall...
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    Which inferential stats test to use? PLEASE HELP

    Hello all, Someone please help. I'm conducting a study on how group gender ratios influences stereotype threat within career choices and level of gender identification, as well as how primes that blur intergroup biases can influence these DV's as well. IV1: Gender ratio (categorical) (3...
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    Normality question

    Hi everyone. I am doing a panel data project. One of the key factors is unemployment. The dependent is program enrollment. Unemployment is not normally distributed when I look at the normality plot. Does this make regression unreliable? There is a visible pattern when I look at the plot...
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    Univariate x multivariate model

    Hello everyone! I just started modelling and I have a question about how to interpret my results. I built 3 models, two univatiates (Z ~ bX + e; Y ~ bX + e) and one multivariate model ( Z, Y ~ bX + e). In both univariate models 'X' was not relates with 'Z' or 'Y', but it was in the...
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    robust regression estimators

    Hi everyone. I have studied the robust regression a few weeks ago and I want to have a lot of insight about it. After reading some sources, I know some estimators on robust regression, i.e. M-estimators, MM-estimators, LTS-estimators, LMS-estimators, and s-estimators. However, every source I...
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    Regression Analysis-Moderation or Mediated Analysis

    Please excuse my lack of understanding of Regression Analysis, but would it be more appropriate to run a moderated or mediated regression analysis for the following question: "Researchers theorized that metacognition for perception may underlie the relationship between source monitoring...
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    How to Fit polynomial regression by bootstrap and establishing IC of each parameters

    #Hi everybody and excuse me for my bad english for this request on R. #here parameter of an hypothetical interval : x=c(60,59,55,49,43,38,33,28,24,20,17,15,12,10,8,6,5) y=c(59,55,49,43,38,33,28,24,20,17,15,12,10,8,6,5,4) #I adjusted it by a polynomial regression degree 3 (not the best...