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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### What means "1/X weighted multiple regression"

What means 1/X weighted multiple regression? Is it just WLS with weights = "1/X" or I'm missing smth? :confused:

• Replies: 1
• Views: 4,642
12-12-2009, 01:42 PM
2. ### Need help - what model, what analysis?

Hi all, please somebody help give me some direction... I have worked long and hard at trying to figure this out for days so please realize I'm not...

• Replies: 1
• Views: 2,273
12-14-2009, 05:00 PM
3. ### NEED HELP on degrees of freedom!!!! URGENT

Hello! I have finished my regression project and am writing my paper for a multiple regression model, but cannot seem to find in notes or online...

• Replies: 3
• Views: 2,457
12-15-2009, 06:17 PM
4. ### Totally lost with regression equations

Hi I have a dataset of 182 countries and I have to compare them with respect to GDP, energy consumption and Carbon dioxide emissions. How can I...

• Replies: 1
• Views: 2,085
12-23-2009, 12:16 AM
5. ### Multiple Regression Query

Hi, I'm an undergraduate psych student and have conducted a multiple regression for an assignment. This might seem like a simple question, but am a...

• Replies: 1
• Views: 2,218
12-26-2009, 10:58 PM
6. ### Regression or LSD for discrete quantitative factor?

I have a 2-factor factorial experiment where Factor A is quantitative and continuous with 2 levels (100 and 200). Factor B is quantitative, but...

• Replies: 0
• Views: 2,963
12-28-2009, 12:55 PM
7. ### Errors vs Residuasl in linear regression

Hello, As far as i know in regression analysis the errors have all the same constant variance. On the other hand the residuals of the sameple that...

• Replies: 0
• Views: 1,897
12-28-2009, 03:03 PM
8. ### Physiology grad student needing some help - linear regression through the origin

Hi all. I'm a PhD student in physiology, and I seem to be suffering from mild amnesia when it comes to statistics. My old course notes are out of my...

• Replies: 6
• Views: 4,318
01-06-2010, 04:43 AM
9. ### independent variable that is a distribution?

Hi, I am attempting a logistic regression analysis with a binary response and explanatory variables measured at the individual level and also some...

• Replies: 0
• Views: 2,666
01-10-2010, 04:10 AM
10. ### What is the history of regression analysis?

Hi all, Recently, I am using regression analysis to do a geophysics study. Now the study is almost done. I start to write my report. I want to add...

• Replies: 4
• Views: 12,282
01-12-2010, 12:22 PM
11. ### Manually calculating weights for WLS

*Posted in Stat Consulting but moved here b/c I think it's more fitting. Hi guys, I'm trying to figure out how to manually calculate the...

• Replies: 0
• Views: 4,445
01-13-2010, 03:21 PM
12. ### multiple regression help

Hi guys, I was reading the following example from a book, but couldn't understand a couple of things. Could you help me out here? Here is the...

• Replies: 1
• Views: 2,300
01-22-2010, 02:50 PM
13. ### Should I transform my scores?

I am using correlation scores as the dependent variable in a multiple regression e.g. I am looking at which personality factors predict how well...

• Replies: 0
• Views: 2,972
02-01-2010, 06:29 AM
14. ### Geographically weighted regression (GWR)

Hi, I am looking for some info on possibility of making a GW regression with a dependent variable as floating point numbers and independent...

• Replies: 0
• Views: 2,771
02-02-2010, 05:45 AM
15. ### multiple regression analysis

Hi There, I am conducting multiple regression analyses using SPSS. I have an outcome variable and several potential predictors, one of which is...

• Replies: 0
• Views: 3,251
02-02-2010, 05:56 AM
16. ### Correlation coefficients as a variable in a multiple regression?

Hi I would like to do a multiple regression using correlation coefficients as my dependent variable - is this possible? Specifically the...

• Replies: 1
• Views: 3,847
02-02-2010, 10:35 PM
17. ### Multiple Linear Regression: How to Calculate the Coefficient

This post has been deleted.

• Replies: 3
• Views: 16,276
02-08-2010, 12:03 PM
18. ### multiple logistic regression

Hello, I want to build a multiple logistic regression and I would like to know what are the steps I need to do in order to buld the model (find...

• Replies: 0
• Views: 2,678
02-18-2010, 12:45 PM
19. ### Regression Analysis - positive correlation

Hi, I am running a regression analysis using data for aircraft values. The problem that I have encountered is that GDP global and Oil Price are...

• Replies: 6
• Views: 3,709
02-19-2010, 04:13 AM
20. ### A question regarding missing variables

Hey all, If you have missing values in your data set, how do you go about doing the statistical analysis? For example if you have a data chart...

• Replies: 2
• Views: 2,302
02-20-2010, 10:14 PM
21. ### Constant SE from covariance matrix on Multiple Regression

Hi: I'm currently developing a Statistical package on Ruby, called statsample (http://ruby-statsample.rubyforge.org/), and I'm now working on...

• Replies: 1
• Views: 4,123
02-22-2010, 01:47 AM
22. ### multiple regression- how to calculate b?

If I'm given the means, standard deviations, and correlation coefficients of two independent variables and one dependent variable, how do I calculate...

• Replies: 1
• Views: 6,467
02-23-2010, 10:03 PM
23. ### How to Calculate the Coefficient of Multiple Regression

Hi Statistic Gurus I'm not really familar with multiple linear regression, and despite countless hours on google, I havn't found any clear...

• Replies: 2
• Views: 10,458
02-24-2010, 07:24 AM
24. ### multiple regression - mix of ordinal/continuous/dichotomous independent variables?

I need to find relationships between one continuous dependent variable (hourly salary) and a number of ordinal (e.g. language skills which are ranked...

• Replies: 0
• Views: 5,967
03-08-2010, 03:52 AM
25. ### Help with Regression Interpretation

Hi - Thanks in advance for any help or advice on this! I know very little about statistics, but I have performed a multiple regression analysis in...

• Replies: 3
• Views: 4,645
03-11-2010, 08:57 AM
26. ### Nonlinear Multiple Regressions

I have seven independent variables and would like to test their collective effect on a dependent variable. When I do a simple least squares...

• Replies: 0
• Views: 2,881
03-11-2010, 09:12 PM
27. ### Averages vs Totals in Multiple Regression - Simple Question

Say in a multiple regression, I have three independent variables, each of which is the sum of 10 values (for ex: annual scores each year for a...

• Replies: 1
• Views: 3,042
03-12-2010, 08:15 PM
28. ### Salary survey. A type of ANOVA but which one?

Ok here goes. I think this is needs a type of ANOVA but not sure which. I am designing a study to measure differences in salaries (DV) between...

• Replies: 1
• Views: 2,499
03-16-2010, 05:23 AM
29. ### R-square and interactions (multiple regression)

Hi, I am doing a GLM regression analysis and have a question about interactions and model fit. My dependent variable is 'salary', and I have...

• Replies: 1
• Views: 5,623
03-16-2010, 08:50 PM
30. ### Linear Regression - About R-squared and slope

My question is that why low or high R-squared has no bearing on whether the estimated slope has a causal interpretation. My explanation is because...

• Replies: 0
• Views: 7,432
03-20-2010, 12:01 PM
31. ### Multiple Regression and Likert Scale Data

With multiple regression, is it necessary to recode independent variables that are measured using Likert Scale responses into dummy variables (with...

• Replies: 2
• Views: 30,167
03-25-2010, 10:03 AM
32. ### Mixed Model: Between Subjects (Continuous) Within Subjects (4 Levels)

Hi everyone, I'm trying to test a model with a between subjects variable (continuous) and a within subject variable (with 4 levels) in predicting a...

• Replies: 0
• Views: 5,431
03-25-2010, 02:05 PM
33. ### Ordinary/Conditional Least Squares vs. Maximum Likelihood

Can anyone explain in layman's terms when we should use maximum likelihood as opposed to ordinary or conditional least squares for regression or time...

• Replies: 0
• Views: 4,780
03-26-2010, 12:38 PM
34. ### Isolating Independent Variables

Question 1: How do I isolate an independent variable? Question 2: Once I know the independent variables impact how do I remove it from a timeline...

• Replies: 0
• Views: 5,025
03-26-2010, 02:02 PM
35. ### A good text on generalised linear models?

Does anyone have any good recommendations on texts on generalised linear models without matrix notation? Cheers.

• Replies: 2
• Views: 3,044
03-28-2010, 03:01 PM
36. ### p-value and conditional heteroskedasticity

Hello, conditional heteroskedasticity affects the standard error coefficient (in a t-test, multiple regression), but does not affect the...

• Replies: 0
• Views: 4,737
04-02-2010, 02:54 PM
37. ### Linear regression- If you ever wanted a chance to save somebody's life...this is it!

Hi guys, I will be forever grateful for some help with SPSS and linear regression. Here is my data set: -I have questionnaire data from...

• Replies: 1
• Views: 2,984
04-02-2010, 06:10 PM
38. ### Standard error of the conditional mean

Hi, Will somebody please show me how to derive the formula to compute the standard error of the conditional mean in multiple linear regression? ...

• Replies: 0
• Views: 3,154
04-05-2010, 09:34 AM
39. ### Multiple Regression

Hi, I'm completing my independant study on the exploration of family structure and health behaviours. After coding my data I have my independent...

• Replies: 0
• Views: 2,393
04-06-2010, 03:19 PM
40. ### Partial Correlation vs. Multiple Regression

What is the purpose of doing JUST a partial correlation as opposed to a full multiple regression? (In cases where there is a clear outcome variable.)...

• Replies: 2
• Views: 8,968
04-07-2010, 08:40 AM
41. ### Binary Logistic Regression with Multiple Data Points

Does anybody know how to run a regression on binary outcome data, with categorical predictors, where multiple subjects each have multiple outcome...

• Replies: 1
• Views: 4,677
BGM
04-10-2010, 04:26 AM
42. ### Unstandardized regression coefficients

Hi all (first post :wave:), I've recently encountered some problems regarding unstandardized (partial) regression coefficients in my coursework. ...

• Replies: 0
• Views: 6,988
04-11-2010, 02:21 AM
43. ### Need help with question

Hye there.I'm new here and joined because needed help with some stats problems.I need help with a problem given below S= 183+0.4122Yi-5926Gi...

• Replies: 3
• Views: 2,432
04-12-2010, 04:13 PM
44. ### Need HELP!... building a multible linear regression model

Dear all, i am not sure which variables and model I should choose for the following question, which is part 7 of a research, since I think almost all...

• Replies: 0
• Views: 2,091
04-16-2010, 08:36 AM
45. ### Non parametric equivalent to multiple regression?

Hi everyone! My sample size is only 15. Is there a nonparametric equivalent to multiple regression? I have five predictors which correlate (using...

• Replies: 2
• Views: 9,722
04-17-2010, 08:26 PM
46. ### Any data transformation needed for Pearson and Multiple regression?

I want to run a Pearson's r and also multiple regresssion between a DV and some IVs. The DV is measured in percentages as well as some of my IVs. The...

• Replies: 0
• Views: 2,898
04-19-2010, 01:14 PM
47. ### Multiple linear regression = conditional sampling?

Hi all! I have read somewhere that when we have n jointly normally distributed variables there is an alternative to 'standard' conditional sampling....

• Replies: 0
• Views: 2,015
04-20-2010, 12:39 PM
48. ### Now sure what to do now (4 variables, no interaction, significant correlated)

Hello everybody - I am in need of some statistical help as I'm a bit confused as to what to do next. I'll give you a rundown of my situation: I've...

• Replies: 7
• Views: 5,414
04-22-2010, 11:26 AM
49. ### Struggling to interpret a result of standard multiple regression

Hi there, I am studying 4th year statistics in psychology. I am doing an assignment which required me to form composite variables from a large...

• Replies: 2
• Views: 3,163
04-25-2010, 10:13 PM
50. ### Stepwise Regression

Let Y = Company Sales X1 = Overall Industry Sales X2 = Advertising Expenditure X3 = Special Promotion by Competitor (0 = Yes, 1 = No) Using...

• Replies: 2
• Views: 5,885
04-26-2010, 02:30 PM
51. ### Help with Regression Equation

Hi, Basically I need help working out all the variables for a multiple regression equation. The equation used is: Y= X1 R1 + X2 R2 +....Xn Rn +...

• Replies: 2
• Views: 3,741
04-27-2010, 10:49 AM
52. ### Testing Multiple Regression Coefficients

Hi, I have a multiple regression equation with 11 or 12 independent variables. Two of these variables are our main explanatory variables. As...

• Replies: 0
• Views: 2,610
04-29-2010, 10:46 PM
53. ### R^2 for linear multiple linear regression

I have two candidates for a linear regression model on y, say x_1, and x_2. So I get two linear regression model for each (b_i*x_i+a_i+e_i) each...

• Replies: 5
• Views: 7,539
05-12-2010, 04:25 PM
54. ### How to test INTERACTION

HI THERE, I have started recently using the multiple regression, I am runing now a model where I have 2 continous independent variables, and 4...

• Replies: 3
• Views: 3,547
05-15-2010, 09:22 PM
55. ### 1way anova to do multiple comparisons on dichotomous dv

Greetings! I wanted to quickly reference with someone who may know more about logistic type analyses. I am doing an analysis of a very large...

• Replies: 0
• Views: 3,143
cdo
05-18-2010, 05:25 PM
56. ### Overall significance test of a multiple regression...

Hey all, I've been puzzling over this for some hours and I've tried many various methods from various text books, I think I must be missing...

• Replies: 1
• Views: 16,434
05-20-2010, 11:22 AM
57. ### multiple regression sample

Hello, I am undertaking a small project for some course work. I am using a multiple regression with 4 predictors. I have a histogram which doesn't...

• Replies: 1
• Views: 3,065
05-25-2010, 12:21 PM

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