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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. OLS vs solving a system of linear equaions

    If i want to solve y=Xb, where y is a vector of observations and X a matrix of independent variables i could use ordinary least squares to estimate...

    Started by Prometheus‎, 09-14-2017 07:49 AM
    • Replies: 11
    • Views: 492
    09-20-2017, 08:06 AM Go to last post
  2. Residual Modelling and Generating Scenarios for variables

    newbie here with a trivial question. i am trying to create scenarios on a set of macro variables. i started with creating a bayesian VAR model on...

    Started by eemrun‎, 09-20-2017 09:33 PM
    forecast, forecast error, var
    • Replies: 0
    • Views: 128
    09-20-2017, 09:33 PM Go to last post
  3. Spend against views/day. Include days of no spend?

    Hi everyone, just looking at doing some simple linear regression and I've got views on an article. Occasionally we choose to spend a bit of money...

    Started by Edorian‎, 09-20-2017 11:41 PM
    • Replies: 0
    • Views: 145
    09-20-2017, 11:41 PM Go to last post
  4. Estimating impact of Predictor

    Hi, I have a simple regression with 24-36 months of data, let's say of Sales which is the dependant variable and % spend on promotions in that...

    Started by confusedguy15‎, 09-22-2017 07:50 AM
    • Replies: 3
    • Views: 150
    09-22-2017, 08:59 AM Go to last post
  5. Fixed effects / clustered standard error in multi-level data

    Hi everyone :) I'm analyzing the effect of political corruption on the bid-ask spread of US political entities, namely my data set consists of...

    Started by Physiokrat‎, 09-25-2017 08:22 AM
    • Replies: 0
    • Views: 130
    09-25-2017, 08:22 AM Go to last post
  6. combining error terms for two dissimilar regressions

    I have a linear regression for Y on X, and a power regression for Z on Y, each having associated error. (the Y values are different (independent) in...

    Started by George Kraemer‎, 09-21-2017 11:32 AM
    • Replies: 13
    • Views: 460
    09-25-2017, 02:36 PM Go to last post
  7. Logit Transformation: Interpreting the Coefficients

    Hi all, I'm currently doing an empirical project in econometrics. I examine the effect of globalisation and some other control variables on...

    Started by Markst‎, 09-24-2017 08:57 AM
    • Replies: 2
    • Views: 198
    09-26-2017, 08:55 AM Go to last post
  8. Hierarchical Linear Modeling (HLM) Assistance

    Sorry if this gets posted twice (it doesn't look like it has posted the first time as of now). I asked a question about fixed vs. random effects...

    Started by Weibull‎, 09-27-2017 10:26 AM
    • Replies: 4
    • Views: 250
    09-28-2017, 04:40 AM Go to last post
  9. Multiple linear regression in cross-country analysis with small sample size

    Hello, While conducting small studentís research project Iíve faced a little problem. Iím using aggregated country data (not in individual, but...

    Started by AloisDusek‎, 10-01-2017 07:10 AM
    • Replies: 0
    • Views: 186
    10-01-2017, 07:10 AM Go to last post
  10. Stationarity and White noise

    Hi all, I'm just beginning to learn about time series analysis for my final year project at uni and I am confused about stationarity. A time series...

    Started by zeke512‎, 10-02-2017 10:57 AM
    • Replies: 4
    • Views: 219
    10-03-2017, 04:53 AM Go to last post
  11. Hierarchical Linear Modeling (HLM) Explanation

    I sought help actually doing an HLM a few weeks ago and found the assistance very helpful. Now, I'm curious about more of the actual meaning of...

    Started by Weibull‎, 10-09-2017 07:32 AM
    • Replies: 1
    • Views: 87
    10-09-2017, 09:07 AM Go to last post
  12. Simple Regression

    The manager of Colonial Furniture has been reviewing weekly advertising expenditures. During the past 6 months, all advertisements for the store...

    Started by vernonicamexie‎, 10-10-2017 01:32 PM
    • Replies: 0
    • Views: 115
    10-10-2017, 01:32 PM Go to last post
  13. Question Controlling for time

    Hello, Thank-you for taking the time to read this post. I have managed to get myself very confused about what is (hopefully) quite a simple...

    Started by CathyK‎, 10-16-2017 08:15 AM
    control variable, logistic regression
    • Replies: 0
    • Views: 55
    10-16-2017, 08:15 AM Go to last post
  14. Ordinal logistic regression - How to get a single scoring function?

    Hi all, I'm running ordinal logistic regressions, with adjacent-category logits. The dependent variable has four ordered levels. So I have 3...

    Started by atrolle‎, 10-17-2017 04:33 AM
    adjacent-category logits, aggregation, linear predictors, ordinal logistic reg, single scoring function
    • Replies: 0
    • Views: 75
    10-17-2017, 04:33 AM Go to last post
  15. Converting a continuous variable into a categorical variable (low, medium, high)

    I have a continuous dependent variable (scores on an exam) and a number of predictor variables that I'd like to use in a regression analysis, such as...

    Started by tess2‎, 10-17-2017 12:08 AM
    categorical, percentiles, regression
    • Replies: 4
    • Views: 149
    10-17-2017, 10:43 AM Go to last post
  16. IV regression help

    Hello everyone, Im confused about endogeneity and how to approach this problem in a case of one equation and multiple equations that are jointly...

    Started by Regressionhelp‎, 10-06-2017 02:26 AM
    iv; iv regression
    • Replies: 4
    • Views: 503
    10-19-2017, 09:10 AM Go to last post
  17. precision assessment of an experimental method

    Hi everyone, I have a very basic knowledge of statistics so apologies if the question is not formulated in appropriate terms. I really hope to get...

    Started by HannaMa‎, Today 04:38 PM
    anova, assessment, coefficient of variation, precision
    • Replies: 0
    • Views: 25
    Today, 04:38 PM Go to last post
  18. Multiple regression multigroup analysis in Amos

    I am testing the hypothesised effect in a model using SEM A -> B between two groups. The results of the standardised path coefficients (SPC) are...

    Started by Hansi‎, Today 06:25 PM
    analysis, group size, multigroup, sem
    • Replies: 0
    • Views: 22
    Today, 06:25 PM Go to last post
  19. Forward selection of non significant variables

    Hi, In SAS Enterprise Miner, I trained a logistic regression with forward selection and AIC criteria. I grouped rare levels for categorical...

    Started by MarcoVA‎, Today 04:37 PM
    forward, information criterion, logisitic regression, statistic test, variable selection
    • Replies: 2
    • Views: 46
    Today, 09:21 PM Go to last post

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