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# 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: 18,723
10-11-2014, 12:02 PM
1. ### Help analyzing bird migration patterns?

Hi. I am trying to analyze data I have on bird migration and am stuck on what I need to do. Basically, I have the maximum abundance of birds seen...

• Replies: 0
• Views: 805
01-29-2014, 09:50 AM
2. ### Help Anova

hi everyone, I currently try to find an open source C/C++statistical library. Basically, I want to calculate the p and F value from oneway (or N...

• Replies: 11
• Views: 4,632
12-14-2005, 05:55 PM
3. ### Help assessing convergence across categorical responses

Hi folks I posted this in the SPSS section, but its actually more a question about which test to use so I think it belongs here. I'm working...

• Replies: 0
• Views: 927
03-05-2015, 11:07 AM
4. ### help calculating needed sample size

hi im conducting a study on a certain ratio in a blood exam (lets call it X) . I aim to say that there is a certain sensitivity (let say>80%) for...

• Replies: 0
• Views: 1,138
01-25-2015, 04:22 AM
5. ### Help Calculating Significance Between 5 Elementary School Data

Hello, I am a school administrator in Oklahoma. I have five small elementary schools in my district. I often here from each of them that their...

• Replies: 2
• Views: 1,429
12-11-2012, 08:46 AM
6. ### help choosing LDA situation to implement

Hey all, I am a comp sci grad student interested in pattern recognition, and have been told that LDA is a good place to start before moving into...

• Replies: 0
• Views: 2,442
10-06-2008, 01:00 AM
7. ### Help correlating Likert scale data with demographic profile

I'm not knowledgeable about statistics, so please excuse any mistakes in phrasing. Our professor is currently on leave, and I don't have anybody else...

• Replies: 4
• Views: 6,404
10-12-2010, 10:20 PM
8. ### Help deciding which analysis to run

Hi all, I'm doing a study and having trouble deciding on the appropriate analysis. I'll give a simple example of what I'm trying to do and any help...

• Replies: 0
• Views: 958
03-23-2012, 02:50 PM
9. ### Help for Statistical Analysis for our project (using Statistical Estimation)

Good day. I would like to ask for your help for our statistical analysis of our project. Our project is an alarm clock that is modified in a way that...

• Replies: 1
• Views: 918
02-25-2014, 08:23 AM
10. ### Help for Web Log stats on blog site...

Hello, I have been asked to run an on-going, weekly statistics rankings of topics on a website (blogs). Each blog author lists 'topics', selected...

• Replies: 1
• Views: 2,366
11-10-2009, 03:01 PM
11. ### Help in categorizing data

Hi, I am working on my dissertation and am stuck with the data analysis. I am dealing with 4 variables, all of which are categorical variables....

• Replies: 0
• Views: 1,038
05-15-2013, 04:35 AM
12. ### Help in determining a proper statistical test an approach for research question

Ik have a problem in determining the right statistical test for my research. First I will give some background information. I want to research the...

• Replies: 0
• Views: 1,326
02-19-2015, 08:48 AM
13. ### Help in Genetic Analysis

Hy, what is the better test (or software) to compare the genotype (or allele) frequency of several gene mutations, at the same time in two...

• Replies: 0
• Views: 2,441
09-10-2008, 08:30 AM
14. ### help in Real survey data analysis‏

would you please guide me to analyze it? i will tell u overall view of the questionnaire and goals and hope to help me how to analyze it the...

• Replies: 2
• Views: 40,870
05-19-2012, 03:47 PM
15. ### Help in result interpretation

Hi All, I analysed a data set using descriptive analysis and I need someone to please help me interprete the results. Below is the result...

• Replies: 0
• Views: 979
05-07-2012, 03:53 AM
16. ### Help in study design! URGENT!

Suppose I do a retrospective review of patients records of two groups of patients.. one with diagnosis A and the other group with diagnosis B. And I...

• Replies: 0
• Views: 2,422
03-08-2009, 03:38 AM
17. ### Help Me ........

I am looking for a topic for my Mphil research. I am fed up with searching for a topic. i am interested in computational statistics, multivariate...

• Replies: 6
• Views: 1,996
10-27-2011, 03:57 PM
18. ### help me, i need some ideas for my dissertation

Okay i am going to conduct a regression analysis to explain the variation in patents per capita across regions in China. I have done some...

• Replies: 1
• Views: 2,407
03-30-2011, 06:24 PM
19. ### Help need on 'Panel Corrected Standard Errors' in SAS

I have panel regression to estimate with time fixed effects and correcting standard errors using 'Panel Corrected Standard Errors', where PCSE...

• Replies: 0
• Views: 3,163
01-24-2012, 02:25 PM
20. ### help needed (PLEASE) on which statistical analysis to use

I am looking at the relationship between attachment in childhood and attachment in adult relationships. Attachment in childhood has been measured...

• Replies: 0
• Views: 1,348
11-22-2013, 03:17 PM
21. ### Help needed - estimating effect size

Hi everyone, I'd really appreciate any help/guidance in solving a little problem of mine. I need to know how to estimate an effect size...

• Replies: 3
• Views: 4,660
08-05-2008, 02:00 PM
22. ### Help needed in analyzing sequential data

Hi! I hope for your advice and directions: I've data that codes a sequence of behaviors. Each sequences is of different lengths. I have 1400...

• Replies: 0
• Views: 1,049
02-24-2015, 02:47 AM
23. ### Help needed to check statistics in thesis

I would really need someone to check my stats work for my thesis, as I am not entirely sure about what procedures I carried out. Quick overview of...

• Replies: 0
• Views: 995
06-20-2015, 10:02 AM
24. ### Help needed urgently - dichotomous question

Hi everyone, I have the following answers to the survey question "are you a new client" (Yes/No). My sample is 1200 clients with 520 respondents....

• Replies: 5
• Views: 3,188
07-28-2011, 07:54 AM
25. ### help needed urgently for my dissertation what analysis method do i use

hi i urgently need some help to do results section of my dissertation as it due soon by early may what analysis do i use and how do i interpret...

• Replies: 0
• Views: 626
04-24-2017, 09:08 AM
26. ### Help needed with choice of appropriate method for repeated measures data

Hello! I'm new on this forum and I'm desperately searching for advice on analyzing my data. I'm currently working on my master's thesis and I'm...

• Replies: 0
• Views: 1,500
08-02-2011, 04:35 AM
27. ### help needed with Fishers Exact Test (power calculation)

Hello everyone. Hope someone can help me. I am running a Fisher exact 4 X 2 table analysis in SPSS. I have been informed its the correct test to...

• Replies: 0
• Views: 726
05-25-2016, 03:49 AM
28. ### Help needed with Multiple Correspondence Analysis

Greetings, I am looking for resources (books, websites, articles) that can help me, in the simplest way possible (i.e. step by step), figure out...

• Replies: 2
• Views: 3,902
07-05-2011, 06:54 PM
29. ### Help Needed! SOS! Survey Scale Development and Analysis Implication

Hey everyone! I found this forum while looking for answers to my issues and thought I would open my issues up to fellow members and see if anyone has...

• Replies: 0
• Views: 1,361
01-27-2012, 12:58 AM
30. ### Help Needed: How to assess heterogeneity/diversity of values in the group?

Dear forum members, I am trying to come up (or to find an existing one) with a measure of how many different values the group of numbers has. ...

• Replies: 0
• Views: 980
07-19-2013, 12:45 PM
31. ### Help on Factor analysis and Extension

Hello frnds , Recently we had done a project on Factor analysis approach to understand the indian consumer behavior Our survey questioner...

• Replies: 8
• Views: 5,227
01-26-2009, 12:28 PM
32. ### help on statisitcal test to use

Hi! In my research I am using a surrogate approach (number of surrogates=100) and I making a comparison among indeces (as correlation indeces...

• Replies: 0
• Views: 2,613
08-18-2008, 03:29 AM
33. ### Help on which test to choose for paired samples?

Hi there - I'm hoping to elicit help on which test to choose - Mann-Whitney vs Wilcoxin (signed rank or rank-sum)? I have paired water samples...

• Replies: 2
• Views: 1,150
06-03-2015, 07:33 AM
34. ### Help Please - Multi-Dimensional Interpolation Analysis

Hi all, I am currently working on a problem that involves a lot of statistics and probability. Unfortunately I have limit expertise in both these...

• Replies: 0
• Views: 847
12-06-2013, 12:47 PM

Hi, im new to this forum and i am a psychology student who is in the middle of my dissertation and it has reached the point that i need to start my...

• Replies: 1
• Views: 1,627
03-25-2009, 11:08 PM
36. ### Help requested for difficult data set

Would really appreciate any insights, please. I administered a survey to 20 participants, consisting of 136 images, and I asked them to rate each...

• Replies: 0
• Views: 1,991
12-31-2010, 03:32 PM
37. ### Help to compute expected value of matrix product

Hello, I have this problem to solve which is driving me crazy: I have the following matrices g = ' where .* here means Hadamard product and...

• Replies: 0
• Views: 3,323
01-25-2012, 05:56 AM
38. ### Help understanding results of this radomized controlled trial.

In the following published paper linked to below, could someone explain the meaning of this quote: Link to publication that the quote is from:...

• Replies: 2
• Views: 1,330
11-22-2015, 10:20 AM
39. ### Help understanding separate- and joint- factor analyses in CFA and ESEM

Folks, I am reading an article that tested 2 models--one with an hypothesized separate-factor relationship between five pairs of personality...

• Replies: 2
• Views: 2,117
02-03-2017, 10:43 AM
40. ### Help w/survey results!

I am hoping someone can help me figure out how to do the following: I am a member of my child's school's accountability committee, and as such we...

• Replies: 4
• Views: 3,520
04-08-2011, 04:05 PM
41. ### Help with analysing data

I have submitted a questionnaire indicating respondants to give their ranking in accordance to their preferred weighting - for example if they gave...

• Replies: 2
• Views: 2,442
12-03-2008, 08:12 AM
42. ### Help with analysis

Hi All, I am new to the forum. I have a specific question regarding one of the behavioral experiment we are conducting. This experiment is...

• Replies: 0
• Views: 1,449
02-12-2012, 11:30 AM
43. ### help with analysis

I conducted a study in which I examined the same subjects in two different modes - day and night. The tests were given in the two situations are the...

• Replies: 0
• Views: 1,152
10-08-2013, 09:27 AM

Hello everyone! I am new to this forum, but excited to become more involved :tup: I am currently a mathematics/statistics student and I am looking...

• Replies: 1
• Views: 2,762
08-04-2011, 05:23 PM
45. ### Help with bimodal distribution

I have a bimodal distribution which I think is made up of 2 normal distributions. How can I tell the 2 distributions apart? In other words I would...

• Replies: 0
• Views: 4,154
11-26-2009, 09:03 AM
46. ### Help with Binomial Distribution Comparison

I have a set of two binomial distributions (0's and 1's) of about 1000 observations each and I want to compare them. I have considered using a...

• Replies: 0
• Views: 1,165
09-09-2013, 01:02 AM
47. ### Help with choice of nonparametric?

Hello, I have a very small sample, n=6 for an exploratory pilot study. I want to correlate the variables i have to see if there are any...

• Replies: 2
• Views: 2,510
11-07-2010, 02:57 AM
48. ### Help with choosing right statisical method.

Hi I am new at statistic and am writing my bachelor thesis. I am not really sure how to interpret the statistical significance of my final...

• Replies: 3
• Views: 1,475
06-03-2013, 12:29 PM
49. ### Help with choosing statistics

Hi! Stumbled over this forum recently, there's so much knowledge here I could just sit and read and read. Anyway, I'm not the strongest in stats so I...

• Replies: 22
• Views: 4,528
11-22-2011, 12:09 AM
50. ### Help with comparing variability of 3 variables on different scales

Hi, I have 3 socioeconomic variables on different scales (yearly income, job category, and years of education) and I'm interested in determining...

• Replies: 0
• Views: 2,832
10-05-2013, 04:02 PM
51. ### Help with comparing very small proportions

I have a problem with comparing some proportions. I am looking at interactions between sequences in a genome and I want to compare the numbers of...

• Replies: 0
• Views: 1,379
05-02-2012, 03:45 AM
52. ### Help with correct statistical test please

Hi everyone. I am a novice at statistical tests, as such I need urgent help in determining what type of statistical test to use in hypothesis testing...

• Replies: 1
• Views: 1,397
03-03-2015, 05:28 AM
53. ### Help with Customer Satisfaction data analysis (Correlation/ANOVA)

I'm working on an analysis of a customer satisfaction survey, where I'm trying analyze the link between respondent's stated likelihood to recommend...

• Replies: 1
• Views: 3,249
11-12-2012, 09:19 AM
54. ### Help with data!!!

Hi, I am new to the forum and would massively appreciate some help with some research I am doing. I am looking at a series of students marks over...

• Replies: 2
• Views: 1,405
01-21-2012, 06:52 PM
55. ### Help with deciding upon a test

Usually I'm pretty good with figuring out what test to use but this has me puzzled: I'm more familiar with the ANOVA camp than the regression camp...

• Replies: 2
• Views: 1,611
04-26-2011, 12:13 AM
56. ### Help with dissertation

Hello everyone. I need someone to make up a table for me for my dissertation. I've got the answers to it but can't figure out how the table can be...

• Replies: 1
• Views: 2,733
03-19-2011, 09:58 AM
57. ### Help with Dissertation Survey Data Input in SPSS

Hi all, I was looking for some help with inputting the data from my survey's into SPSS for analysis. I've conducted a survey on Internet Banking...

• Replies: 0
• Views: 1,281
03-16-2013, 08:06 AM

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