1. Announcement:
05-10-2017
Views:
1,896
Page 2 of 54 First 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 52 ... Last
Threads 61 to 120 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: 18,756
10-11-2014, 12:02 PM
1. ### Adding Random Variables from Logistic Distributions

Given two logistic distributed random variable: ( mu_1, s_1 ) and ( mu_2, s_2 ) what is the sum of the variable? I tried monte carlo on (...

• Replies: 2
• Views: 8,213
05-13-2010, 04:36 PM
2. ### Addressing omitted variable bias in count panel model

Hello dear forum members, My study aims to address the question about physician ratings: Do they have an impact on the business value (as proxied...

• Replies: 1
• Views: 1,365
07-02-2015, 09:18 AM
3. ### Adequate sample sizes for countries

Hello everyone: I am conducting a social science comparative study in several nations and I am worried about the sample size I need for each...

• Replies: 0
• Views: 974
05-28-2013, 08:56 AM

I got a negative adj. r-square. Since the effect size (Adj R-sq=-.016) was low, did it indicate that a time in treatment (the independent variable)...

• Replies: 8
• Views: 3,166
05-02-2014, 05:10 PM

Hi, I'd highly appreciate your recommendations for a research I'm doing. More specifically, I'd like to know the advantages, disadvantages, and...

• Replies: 2
• Views: 1,082
04-04-2017, 02:18 AM
6. ### Advice for a book about Higher Order and Asymptotic Likelihood

Hi, I'm a bachelor student in statistics. I'm looking for a book about higher order and asymptotic likelihood that is not too complicated and...

• Replies: 0
• Views: 805
e__
09-14-2015, 07:50 AM
7. ### Advice for analyzing a small sample

I am currently working on my doctoral thesis in computer science and I have data from an experiment that I want to analyze, but I don't want to run...

• Replies: 5
• Views: 5,753
02-18-2010, 10:39 PM
8. ### Advice on appropriate statistical test

I have 4 groups who provided scores and am interested in comparing the scores between groups to determine if they are significantly different. The...

• Replies: 2
• Views: 1,281
05-21-2014, 09:01 AM
9. ### advice on how to proceed

Hello, I recently undertook to analyze a relatively simple data set. It includes estimates of tree species composition for several sites within...

• Replies: 5
• Views: 1,835
11-10-2015, 12:37 PM
10. ### Advice on predictive modelling/forecasting

Hi - I am looking for some advice on predictive forecasting. I will be taking measurements of power grid frequency data. These will all be within...

• Replies: 1
• Views: 3,694
01-24-2011, 07:51 AM
11. ### Advice on specifying factors in a Permanova model - repeated measures design

Hello all, I am new to the forum and this is my first post. I would appreacite if somebody could provide advice on the following problem: I am...

• Replies: 0
• Views: 1,618
08-16-2012, 07:09 PM

So I'm trying to make my data match, in some ways, those used by the CDC (NCHS, specifically). In particular, I need to calculate age-adjusted...

• Replies: 0
• Views: 2,004
09-13-2011, 12:28 PM
13. ### Age and DNA methylation data: HELP NEEDED

I have data on patient Age as well as change in % DNA methylation levels for promotor regions. I seek to understand the impact of Age on the % change...

• Replies: 1
• Views: 1,437
12-08-2013, 11:21 AM
14. ### Age-Matching Groups Who Differ on Age

I have two groups of children, A and B. Group A is the treatment group and has an age range of 5-7 years old. Group B is the control group and has an...

• Replies: 4
• Views: 5,835
11-06-2008, 02:17 PM
15. ### Algebra of random variables?

Hi Guys, I'm in the field now, so I'm not online much. However I do have a burning question. Does anyone have any book suggestions for me that...

• Replies: 2
• Views: 2,476
03-12-2012, 11:33 AM
16. ### Algebra, two-sample t-statistic, variance

• Replies: 20
• Views: 5,838
08-13-2012, 12:31 AM
17. ### Alpha reliability

Theoretically, is it ok to carry out a t-test to see the difference between two Cronbach alpha reliability scores? Thanks

• Replies: 0
• Views: 1,385
02-28-2012, 11:58 AM
18. ### Alpha under .7 in experience sampling data for some measurement moments

I am facing a problem with my experience sampling data: Some of my alpha (Cronbach) are under .70 for 25 out of 240 measurement moments. Sometime...

• Replies: 0
• Views: 1,225
03-28-2014, 08:26 AM
19. ### alternative to anova

What is an alternative statistical test to anova. I have a large varience between three groups (control and two experimental). How can I determine...

• Replies: 10
• Views: 5,485
12-16-2011, 09:43 PM
20. ### Alternative to two-sample t-test when proportions are SMALL (<0.001)

Hi, I'm looking for an alternative to the two-sample (independent) t-test for equality of proportions. The two-sample t-statistic only holds...

• Replies: 0
• Views: 4,338
01-14-2009, 04:15 PM
21. ### Am I applying this Chi-squared test correctly?

Hi everyone! I am a history grad student and I am trying to use some statistics in one of my papers. I am working with a certain (ancient) text...

• Replies: 4
• Views: 1,789
06-16-2013, 08:53 PM
22. ### an event study? I can't stand. which way should I choose?

Please a little help. There is an event. You can think a government interference . So, price of firms is decreased and therefore quantity of...

• Replies: 3
• Views: 6,412
01-02-2011, 06:15 PM

Hello I am conducting research into how behvaviour changes from year 1 to year 2 of study on a college course. I have provided students with a...

• Replies: 9
• Views: 5,104
08-23-2011, 07:58 PM
24. ### Analyse unemployment rate and public expenditure on active labour market policies?

Hello everyone, I have a data set of OECD. I would like to analyse the relation between this two indicators: the relation between unemployment rate...

• Replies: 0
• Views: 1,191
01-17-2014, 01:12 PM
25. ### Analysing an unbalanced factorial design

Hello, I have data from an unbalanced factorial design, and would like some suggestions to analyse them. It is supposed to be 3 x 2 factorial...

• Replies: 2
• Views: 4,298
02-28-2012, 11:43 PM
26. ### Analysing Limited Data

Help! For my thesis I involuntary have a small dataset due to a limited population. I was thinking about analysing this data with the statistical...

• Replies: 0
• Views: 1,121
03-03-2017, 06:52 AM
27. ### Analysis of Categorical Data

Hello friends, I'am doing intermediate statistics for second year and I'am having some issues with this chapter. My professor told...

• Replies: 0
• Views: 3,237
03-06-2011, 04:44 PM
28. ### Analysis for different data scales

Hello everyone. I have a question that how can I perform regression/correlation or hypotheses testing on a data which has different response...

• Replies: 0
• Views: 312
07-19-2017, 09:17 AM
29. ### Analysis for MSc - multiple regression?

Hi everyone, I hope someone wouldn't mind checking I am on the right track with the stats for my MSc project (recovery times in reptiles...

• Replies: 1
• Views: 1,640
08-08-2011, 11:38 AM
30. ### Analysis Likert Data and Comparing 2 Groups

I have 2 groups of people. There are 75 people in each group. Each group was given the same set of 7 Likert items. I want to compare the results...

• Replies: 7
• Views: 2,555
06-22-2013, 06:04 AM
31. ### Analysis of 5 point Likert Scale Data

I am working on analysis of a survey conducted with a 5 point likert agreement scale. I need to explain why 70&#37; agreement (combined agreed and...

• Replies: 1
• Views: 12,394
12-15-2009, 08:47 PM
32. ### Analysis of a matched case-control study

Please, i need help on my analysis. It is a 1-1 matched case-control studies. I am willing to pay for the guidance. My deadline is friday.

• Replies: 11
• Views: 2,821
01-27-2014, 10:17 AM
33. ### Analysis of counts data from consumer test

Hi everyone, First of all I'm new to this forum so my apologies in advance for the mistakes I could do by posting here. My issue is the...

• Replies: 2
• Views: 1,298
04-22-2015, 10:33 AM
34. ### Analysis of Covariance

Hi everyone, I would like to ask a question about the type of scale (e.g. categorical , continues variable) that should be use as a covariate. I...

• Replies: 0
• Views: 1,030
04-10-2012, 10:08 AM
35. ### Analysis of electricity consumsion

Hello @all I want to analyze on how several factors have an effect on electricity consumtion (measured in mw). Before I start to gather the data,...

• Replies: 0
• Views: 1,057
03-19-2013, 03:01 AM
36. ### Analysis of Variance.

Hi all, I have a one question about the analysis of variance. If I have to variables (e.g. A &B) and I want to deal with them as covariate to...

• Replies: 1
• Views: 1,859
02-04-2012, 04:42 PM
37. ### analysis over all items OR by-subject OR by-items analysis?

Hi, Let's say you have a data set of for instance 20 subjects who all answered 15 questions. Every question is one items that is either correct...

• Replies: 1
• Views: 1,590
02-20-2015, 10:22 AM
38. ### Analysis with multiple unordered factors?

Hi everyone, I hope some expert out there can point me in the right direction on this. I have a binomial outcome (A/B) and a number of...

• Replies: 0
• Views: 2,071
hrj
09-18-2010, 03:50 PM
39. ### Analysis Workflow: Best practices

Hello all, I hope this finds everyone doing well. I have a couple of questions about workflow for analyses. Hopefully, this will be of broad...

• Replies: 4
• Views: 2,363
07-23-2011, 11:55 PM
40. ### Analytic options with multi-level data?

Hello, I've been struggling with choosing an analytical approach to some multi-level data (3 level) I'm working with and wanted to get some fresh...

• Replies: 12
• Views: 2,901
01-31-2013, 01:15 PM
41. ### Analyzing 311 Calls trend

For an assignment, I am analyzing 311 call trends. I have downloaded the total number of 311 calls made in my city per month for the last five years...

• Replies: 3
• Views: 1,446
04-28-2014, 03:55 PM
42. ### Analyzing a repeated experiment with only one subject

My experimental setup is explained using a simplified analogy of what I am doing: We are dropping 40 balls into a body of water. All the balls are...

• Replies: 0
• Views: 1,483
07-25-2013, 09:43 AM
43. ### Analyzing Customer Satisfaction Indexes

Hello, I work for a company and we recently started to measure our customer satisfaction index. We chose the sample size based on a well-known...

• Replies: 1
• Views: 1,890
01-31-2011, 01:09 PM
44. ### Analyzing Gentrification with Data

Hello, I am developing a masters thesis which will attempt to utilize census tract data to assess the occurrence of gentrification in Washington,...

• Replies: 0
• Views: 1,296
01-11-2013, 07:32 PM
45. ### Analyzing Likert scale

Hi, I am doing my research on QWL prevailing in Industry. I have collected data through questionnaire on 5 point likert scale, 1=strongly disagree...

• Replies: 4
• Views: 11,065
05-01-2011, 07:56 AM
46. ### Analyzing Likert Scale Data Using Statistical Tools

Hi everyone, I'm doing an MBA dissertation on the topic "Impact of Customer Service Satisfaction on Business Performance". The hypothesis set is...

• Replies: 3
• Views: 1,646
06-29-2016, 01:50 AM
47. ### Analyzing Multiple Regression - Comparing to Simple Regression

I am working on a paper where the methodology was already approved. I know it isn't the "best" way to analyze my question but I am moving forward...

• Replies: 0
• Views: 1,299
12-31-2013, 11:13 AM
48. ### Analyzing Pooled Likert Data

Hi Everyone, I'm analyzing Likert Survey Responses for a question "How satisfied are you with your Item?" (1 = Very Dissatisfied / 5 = Very...

• Replies: 3
• Views: 1,047
10-01-2013, 08:40 AM
49. ### Analyzing statistics reports

I am working on analyzing a report regarding ginger use in alleviating nausea/vomiting in pregnancy. I had my professor look over my report because...

• Replies: 0
• Views: 2,012
10-01-2010, 03:01 PM
50. ### Ancova

Hello, For an ANCOVA the scores for each group (defined by the levels of the factors) should be normally distributed. Does this apply for the...

• Replies: 3
• Views: 1,327
09-03-2013, 05:08 AM

f(x)=e^-(x-\theta) -(x-\theta) is the exponent x>\theta I need to find MLE for \theta I tried doing it with a graph, but I got strange...

• Replies: 4
• Views: 5,340
06-09-2010, 02:09 PM
52. ### Anova

I am trying to find the effects of feed rate, cutting speed and depth of cut on surface roughness. I have five sets of feed rate ( 0.09, 0.10, 0.125,...

• Replies: 5
• Views: 2,589
02-29-2016, 06:07 AM

Page 2 of 54 First 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 52 ... Last

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.