1. Announcement:
Dason ‎(Devorador de queso)
05-10-2017
Views:
1,895
+ Post New Thread
Page 11 of 54 First 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ... Last
Threads 601 to 660 of 3193

# Forum: Statistical Research

Statistical theory and methodology. Mathematical statistics. Parametric inference. Nonparametric inference.

1. ### Sticky: Proof of the day

In this thread we post one (or more if you can't wait) proof a day. I'll start by proving the that V=\sigma^2(X'X)^{-1} in the linear...

• Replies: 14
• Views: 18,755
10-11-2014, 12:02 PM
1. ### Multivariate analysis - help

Hi, I'm looking at place of death in a group of people, I have information on where they died, what they died of, their ethnicity, the area of...

• Replies: 4
• Views: 3,604
05-30-2015, 05:37 AM
2. ### Quick Chi-Square Question

Hi all, I'm familiar with chi-square and have used it for a while at work. Just wondering something... When calculating the Chi-Square for each...

• Replies: 4
• Views: 2,265
03-18-2014, 09:23 AM
3. ### Mediation Analysis with Categorical IV with 4 levels

Hello all, I would like to do a mediation analysis using the following 3 variables: 1. Integration Strategy: This is the independent variable. It...

• Replies: 4
• Views: 9,350
12-16-2014, 08:27 PM
4. ### Rasch Analysis

Hello all, someone asked me to look into Rasch Analysis. I have found a few articles that I am going to read but I was just curious if anybody is...

• Replies: 4
• Views: 3,588
02-23-2016, 12:09 PM
5. ### Negative confidence intervals

HI THERE!! I am presenting 95% CIs in my thesis for the means of the data sets like metric tons of tuna exported per month, value of tuna exported...

• Replies: 4
• Views: 4,491
09-24-2013, 08:47 AM
6. ### Searching for data reduc

Hello, I am so confused and so depressed, I hope someone can help. In my Database I have a plenty of datas about 1000 machines. It is to hard to...

• Replies: 4
• Views: 1,212
szm
11-22-2013, 02:48 PM
7. ### p-value for nearest neighbor classification

Hi all, For the past few days, I have been trying to compute a p-value for some experiment I ran recently, and I simply cannot figure it out. ...

• Replies: 4
• Views: 3,009
11-24-2013, 03:58 AM
8. ### ANOVA: )Genre of Series (IV) +Gender (Moderator) effect on Purchase Intention (DV)

Hey, In my research I have as IV the Genre of the series (comedy vs drama). The moderator is Gender. And I want to see how this effects purchase...

• Replies: 4
• Views: 1,478
12-16-2013, 11:21 AM
9. ### Statistical justification for Cochrans Q please

Please may someone tell me the proper way to write a statistical justification for a Cochrans Q .. By any chance is it the same a t-test? ...

• Replies: 4
• Views: 1,447
12-29-2013, 06:57 PM
10. ### Dummies in a correlation matrix

Hi everyone, I am working on a multiple moderate regression. And just wanted to add the correlation matrix as well. Now I got the responds that...

• Replies: 4
• Views: 2,129
02-27-2014, 12:07 PM
11. ### Need help with medical study

Hi, I'm writing a medical paper on asthma and I'm afraid I 've reached a point where I am unconfident of my statistics knowledge. I am...

• Replies: 4
• Views: 1,522
03-04-2014, 03:42 PM
12. ### Appropriate statistics where dataset contains only positive cases?

Sorry if this sounds confusing or uses the wrong terminology, I'll do my best to explain. I have a data set of approximately 100 records, where...

• Replies: 4
• Views: 1,798
04-08-2014, 02:51 PM
13. ### Meta Analysis Question: Is this even possible?

Here's the situation: a colleague has a stats consultant who is saying the following type of meta-analysis is possible. He has replicated a study...

• Replies: 4
• Views: 1,259
04-23-2014, 08:56 PM
14. ### obtaining an unbiased estimator for the min: x_(1)

How would I go about finding an unbiased estimator for the minimum order statistic for a given PDF and distribution. Example: ...

• Replies: 4
• Views: 1,278
04-25-2014, 10:30 AM
15. ### SEM: How to Label path diagram and translate it into Equations

Hei hou I'm new here. So hello everybody. I have a problem. It's about SEM (structural equation model). I have to lable a path diagram...

• Replies: 4
• Views: 1,234
04-30-2014, 07:03 PM
16. ### Unbalanced sample - which test do I use?

I have two samples - group 1 has 26 participants / group 2 has 44 participants I was planning to use a two-way anova to analyze various aspects of...

• Replies: 4
• Views: 1,458
06-17-2014, 01:16 PM
17. ### Repeated Measures ANOVA and baseline control

I’ve been asked to work on a cross-over design study for an MSc project. The study is looking at the effects of sleep deprivation on word recall....

• Replies: 4
• Views: 2,165
07-29-2014, 07:15 AM
18. ### Continuous response variable and categorical predictor - what type of analysis to use

Hi, I am dealing with data in which the IV's are not easily partitioned - participants can belong to one, two+, or none of the categories for a given...

• Replies: 4
• Views: 1,305
08-16-2014, 03:44 PM
19. ### Generalized estimating equations and multiple imputation

Hi, I'm running a Generalized estimating equation model with multiple imputed data but I can not get a pooled outcome. Do anyone have a solution to...

• Replies: 4
• Views: 2,999
10-29-2014, 03:06 PM
20. ### Statistical analysis of longitudinal data using multi-level model?

Hello! This is my first post, I'm just wondering if I can use this approach? I want to research the opinion of 8 countries(data is a proportion),...

• Replies: 4
• Views: 1,813
11-18-2014, 06:03 PM
21. ### Structural Equation Modeling: When and why do you use Z-scores instead of Mean.

Hi. Can anyone help me answer the question why some people who do SEM use z-scores as opposed to using mean scores? (articles and books are...

• Replies: 4
• Views: 4,636
01-15-2015, 11:27 AM
22. ### Call response time distribution [Help needed]

Hello everyone! I'm new to this forum but I want to start off by making a request. The thing is I'm working on a project regarding call-back...

• Replies: 4
• Views: 1,393
BGM
02-05-2015, 01:46 PM
23. ### How to alter the standard deviation of an empirical distribution?

For the purpose of a simulation I need to increase the standard deviation of an empirical distribution. I want to simulate what will happen if the...

• Replies: 4
• Views: 2,116
02-21-2015, 05:46 PM
24. ### Method to estimate whether two data sets are from the same distribution

Hello, I have two data sets from two different experiments. I would like to know whether there exist Bayesian (or frequentist) methods which would...

• Replies: 4
• Views: 2,031
04-20-2015, 04:13 PM
25. ### beating the rules at discrete sampling

hi, I am looking at the question of how to sample rare occurances, like a rare defect in a manufacturing line. If I use the standard sample size...

• Replies: 4
• Views: 2,716
06-11-2015, 02:42 AM
26. ### Predictive model for Turnover - Correlation or Survival Analysis

Question 1 - I a working on developing a model to predict employee turnover. The variables that I have are age, tenure, job satisfaction, role...

• Replies: 4
• Views: 1,458
06-17-2015, 10:49 AM
27. ### Can we have a Logit that punishes some missclassifications more harhsly than others ?

Suppose I wish to estimate a logit model to predict Large losses when trading stocks, well I might say y_t = 1 if that trade was a large loss. But...

• Replies: 4
• Views: 1,437
06-19-2015, 07:06 AM
28. ### Factor Analysis or Something Else

Hey guys, So I was a little uncertain about where to best post this, so I apologize if this is in the wrong place, but I had a statistical...

• Replies: 4
• Views: 2,143
06-22-2015, 07:27 AM
29. ### Need help picking a statistical procedure

Hello all, We have collected quite a bit of data and we would like to write it up as a study, but we are having trouble determining which...

• Replies: 4
• Views: 1,436
08-06-2015, 07:46 AM
30. ### Calculating variance for variable derived from two correlated variables

Hello, I am analyzing a dataset based on a survey of organic farmers. Among other things, I have data about the farmer's organic seed usage and...

• Replies: 4
• Views: 1,759
08-07-2015, 04:22 PM
31. ### ANOVA or Correlational analysis? Which one to use?

Hello everyone, I am currently working on my dissertation and aim to identify the relationship between parent-child interaction and behavior of...

• Replies: 4
• Views: 1,668
10-22-2015, 06:35 AM
32. ### Kruskal-Wallis or Poisson regression for parasite count data?

Trying to figure out how best to carry out this analysis... So essentially I have four different species of Deer mice, infected with a high, medium,...

• Replies: 4
• Views: 1,527
10-27-2015, 05:28 PM
33. ### How should I explain this results?

The hypothesis is: the willing-to-pay is higher when people see print ad with testimonial. So there are four print ads 1. 1 cola ad with...

• Replies: 4
• Views: 1,594
11-14-2015, 01:34 PM
34. ### binary choice with fisheries data over time

Hi all, I am new to the forum so please bear with me if I am not following protocol in my post. I have fisheries data which is vessel specific....

• Replies: 4
• Views: 1,495
11-19-2015, 02:19 PM
35. ### How should I further analyse this result?

I have following variables: -"adtype" (1 is print ad with testimonials, 2 is print ad without testimonials.) -"AT1" which is "ad attitude...

• Replies: 4
• Views: 2,065
12-04-2015, 04:05 AM
36. ### correlation matrix: Bonferroni or not Bonferroni is my question

Hello all, When constructing correlation matrices, a number of people claim that one should apply the Bonferroni adjustment if the number of...

• Replies: 4
• Views: 1,421
12-03-2015, 08:50 PM
37. ### normal distribution

Hello I have two separate population (sick/ not sick), that I wanted to check if a specific variable (cognitive variable- general mind wandering...

• Replies: 4
• Views: 2,194
12-29-2015, 05:16 AM
38. ### Variance across different sample sizes

Hello, I want to know how I can interpret variance when the sample sizes are not exact. Here is my problem: I am analyzing daily playing data...

• Replies: 4
• Views: 1,430
01-04-2016, 05:43 PM
39. ### Fisher's Exact test and subjects with multiple observations?

Hi Everyone, I was wondering if I could please have some advice on how to deal with data that have multiple observations for some of the subjects...

• Replies: 4
• Views: 1,314
01-20-2016, 06:31 PM
40. ### How can I best analyze this data

I have some data I am trying to analyze but was hoping to get some stats help with it. I'm not sure what the best way to analyze it is. I'm...

• Replies: 4
• Views: 2,494
04-13-2016, 04:04 PM
41. ### Leave-one-out cross validation

Hi, I am trying to understand the Leave-one-out cross validation method but all sources explain it mathematically. Can someone please basically...

• Replies: 4
• Views: 842
02-01-2016, 09:05 PM
42. ### test of normality help

Dear Friends i need help in statistical research paper kindly assist some help thank you.

• Replies: 4
• Views: 1,389
03-03-2016, 08:02 PM
43. ### Nonparametric for paired, but unequal sample size

Hi, I'm in the midst of writing my master thesis, but I'm having issues with the statistics. I've measured muscle cells. In short, I've 4...

• Replies: 4
• Views: 1,186
03-14-2016, 10:29 AM
44. ### Pre and Post with Treatment group - ANOVA , ANCOVA, Regress differences???

Hello friends, My main task is to "test" if staff member who participated in the counseling sessions had fewer "Use of Force (UOF)" incidents in...

• Replies: 4
• Views: 1,867
05-12-2016, 10:00 AM
45. ### Appropriate test for quantitative content analysis of one newspaper

Hi everyone, I am examining the differences in media coverage of homicide on the basis of the religion of the victim (bias). The sample is one...

• Replies: 4
• Views: 1,369
05-22-2016, 07:15 AM
46. ### Good sources (books, articles, ....) on the history of Monte Carlo methods?

I am finally entering the final step of my PhD. Chapter 1 of my dissertation has already been published, Chapter 2 has been submitted for publication...

• Replies: 4
• Views: 2,464
07-22-2016, 05:38 AM
47. ### How to determine if two R2 values (rsquared) are significantly different

Hi TalkStats :):):) I have fit two different functions (f1,f2) to some data. These functions have different forms (see below), in that they have...

• Replies: 4
• Views: 2,296
09-08-2016, 12:28 PM
48. ### Difference between two independent proportions

Hello, I am not a statistician, however, for my latest small research, I would like to test whether there is a difference between two independent...

• Replies: 4
• Views: 4,192
03-03-2017, 01:48 PM
49. ### Sample Size Help for Observation Study

I wanted to calculate sample size for a single group, observational study. I'll be using a questionnaire to predict outcome (i.e. score on another...

• Replies: 4
• Views: 3,142
12-16-2016, 10:29 AM
50. ### Which tests to use in these examples? Wilcoxon etc.

I'm pretty clueless, but would appreciate any help very much. I have: Group 1: went from nothing, to receiving surgery 1, and then later on...

• Replies: 4
• Views: 1,003
05-08-2017, 07:40 AM
51. ### comparing section in a scale using spss

Hi everyone; hope you are doing well, I am actually conducting a research, and I am comparing between a pre and post scale. my problem is that...

• Replies: 4
• Views: 1,477
04-02-2017, 09:55 PM
52. ### Anova with data reduction? (Experimental design)

Hi, this is my first post, I hope to do nothing wrong like posting in the wrong area.:pag It happens that I did an experiment where I have a...

• Replies: 4
• Views: 2,034
03-03-2017, 01:37 AM
53. ### Dealing with regression to the mean

If I have two time points T1 and T2 and separate the groups based on their performance at T1 (High v Low), then after treatment assess their...

• Replies: 4
• Views: 3,034
01-12-2017, 10:52 PM
54. ### Poll: Confidence Intervals: Closed or Open Intervals

I want to pose a question, mainly theoretical in nature, but applied responses are more than welcome. First, I'll define some terms. An interval...

• Replies: 4
• Views: 209
10-10-2017, 06:26 PM
55. ### New guy, Stats help needed with this problem.

Hi guys, I'm taking Mathematical Statistics course and we are following Statistical Inference book by George Casella. I was able to solve most of...

• Replies: 3
• Views: 2,937
10-11-2007, 11:30 AM

+ Post New Thread
Page 11 of 54 First 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ... Last

#### Thread Display Options

Use this control to limit the display of threads to those newer than the specified time frame.

Allows you to choose the data by which the thread list will be sorted.

Note: when sorting by date, 'descending order' will show the newest results first.