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Forum: Applied Statistics

Statistics in finance, economics, engineering. Actuarial science. Econometrics. Operations research.

  1. Angry Compounding Annual Growth

    I'm working on a project for work involving data for the entire year of 2006. The data is currently broken out by monthly totals and the month/month...

    Started by Chimmy‎, 01-12-2007 12:28 PM
    • Replies: 0
    • Views: 3,241
    01-12-2007, 12:28 PM Go to last post
  2. A textbook of Time Series Analysis

    I obtained a Bachelor Degree in Statistics in 1988. I was separated form this profession for more than 17 years because I was exercising Information...

    Started by davidbinyam‎, 05-13-2008 10:41 PM
    • Replies: 8
    • Views: 9,222
    05-16-2008, 02:58 PM Go to last post
  3. Question on financial Beta

    I've got a question on Beta as it's used in the financial community (covariance of a particular stock with its underlying index, divided by the...

    Started by jay2377‎, 06-23-2008 08:50 AM
    • Replies: 2
    • Views: 6,044
    06-23-2008, 03:06 PM Go to last post
  4. Help with Analyzing Stocks

    I'm working on a project for school and need help! What I am trying to do is create a regression channel for the stock market. The data I have to...

    Started by kurtvon‎, 12-15-2008 05:13 PM
    • Replies: 4
    • Views: 5,172
    12-15-2008, 10:15 PM Go to last post
  5. Thumbs down Regress Prices or Returns?

    Hey there, I've just started a new job and have been asked to take a look at the historical correlation of the spot gold price with the spot...

    Started by John Rormark‎, 11-10-2009 11:44 PM
    • Replies: 1
    • Views: 9,114
    11-11-2009, 01:07 AM Go to last post
  6. Overarching question for each domain

    In our investigation of importance of a set of variables to a company's success, we have identified 55 variables, which can be classified into 7...

    Started by Dr.Appalayya‎, 11-13-2009 11:57 PM
    • Replies: 0
    • Views: 3,998
    11-13-2009, 11:57 PM Go to last post
  7. Question Multiple Regression for Compensation Planning

    I have very little statistics experience, so what I am about to ask may actually be a very simple question, but it is driving me crazy. I am...

    Started by mchel_27‎, 01-04-2010 11:38 AM
    • Replies: 3
    • Views: 4,132
    01-04-2010, 04:00 PM Go to last post
  8. Mortality table for water heaters

    I would like to use this sample to answer the question: given that your water heater has lasted X years, you have a 50-50 chance of it lasting until...

    Started by Outlier‎, 01-30-2010 12:02 PM
    • Replies: 9
    • Views: 4,031
    02-02-2010, 09:52 PM Go to last post
  9. Logistic Regression

    Hello, I have a couple of questions on logistic regression: 1. In the stepwise procedure, I have two predictor variables --> one variable, X,...

    Started by mellow_guy‎, 02-16-2010 01:50 PM
    • Replies: 0
    • Views: 2,822
    02-16-2010, 01:50 PM Go to last post
  10. correlation coefficient and slope

    Hi, I am not a statistics guy but I need some help understanding something. Looking at this page -...

    Started by saminny700‎, 02-19-2010 10:42 AM
    • Replies: 1
    • Views: 5,204
    02-19-2010, 12:55 PM Go to last post
  11. Business survival rates

    Anyone who could direct to papers written on the subject? I am interested in a research project to analyse these frequently published data (by the...

    Started by Redstat‎, 02-20-2010 07:02 AM
    • Replies: 1
    • Views: 2,954
    02-20-2010, 03:16 PM Go to last post
  12. Decision errors and sample sizes (VSP)

    Hello Please be gentle with me, I'm not a statistician, but I am struggling to understand the following problems which crop up in my work. I'm...

    Started by SandY‎, 02-22-2010 04:55 PM
    • Replies: 0
    • Views: 2,336
    02-22-2010, 04:55 PM Go to last post
  13. Intraclass Correlation for test retest

    I have a problem with reproducibility assessment. I am measuring the amount of scar tissue in hearts by 7 different methods. There is no...

    Started by flettster‎, 02-23-2010 02:04 PM
    • Replies: 0
    • Views: 3,495
    02-23-2010, 02:04 PM Go to last post
  14. Question Questionnaire data with multiple categories.. urgent!

    Hey, I have the following issue by using SPSS analyzing my data of a questionnaire: I have 16 questions (7point likert scale, with 4 categories...

    Started by AndyK‎, 02-28-2010 08:01 AM
    • Replies: 0
    • Views: 2,920
    02-28-2010, 08:01 AM Go to last post
  15. Assembly time for IKEA furniture

    Their furniture units have a number of wooden panels & pieces NP and a number of fasteners NF. If I assemble two units of furniture in times X and...

    Started by Outlier‎, 03-16-2010 07:29 PM
    • Replies: 4
    • Views: 9,712
    03-18-2010, 08:28 AM Go to last post
  16. Natural Neighbour Interpolation

    My problem concerns the application of Natural Neighbour Interpolation (NNI) to point data in the creation of a surface. The algorithm was first...

    Started by rjhall‎, 04-06-2010 03:33 PM
    • Replies: 0
    • Views: 5,340
    04-06-2010, 03:33 PM Go to last post
  17. Time Series

    Hi guys, I need some advice, I got a data file to analyze for someone, and it appeared to be a time series data, I ain't very experienced with...

    Started by WeeG‎, 04-09-2010 02:51 PM
    • Replies: 5
    • Views: 3,781
    04-13-2010, 01:03 AM Go to last post
  18. ANOVA or ANCOVA - how to standardize for body size

    Hi everyone, I have a set of data for several species of animals that range in size. Is it appropriate for me to standardize my dependent...

    Started by lmac‎, 04-13-2010 04:20 PM
    • Replies: 1
    • Views: 3,165
    04-13-2010, 07:08 PM Go to last post
  19. Standard deviation question

    Hello, I have 3 replicates from an experiment and i would like to calculate their standard deviation; however, each of the replicates is itself an...

    Started by tnad‎, 04-13-2010 05:48 PM
    • Replies: 1
    • Views: 2,874
    04-18-2010, 11:08 AM Go to last post
  20. Question Manova

    Hi folks, First off, I have no training or education in statistics, so my knowledge thereof is fairly limited. I've been reading quite intensely...

    Started by redep‎, 04-18-2010 11:28 AM
    • Replies: 0
    • Views: 3,333
    04-18-2010, 11:28 AM Go to last post
  21. panel data and price effect

    Hi, I am using a panel data (N firms are observed over T years). My dependent is the gross-margin and I would like to estimate the impact of...

    Started by Gravier1Billion‎, 05-03-2010 05:41 AM
    • Replies: 0
    • Views: 2,795
    05-03-2010, 05:41 AM Go to last post
  22. Maximum Likelihood Estimation Stata

    Hey, i have a dataset with three variables x1, x2 and x3. I want to estimate (b0...b9) from a translog relationship T(x1,x2,x3)=0 where T is: b0...

    Started by KinnShady‎, 05-05-2010 06:45 AM
    • Replies: 0
    • Views: 3,398
    05-05-2010, 06:45 AM Go to last post
  23. Looking to hire a modeler/programmer

    Looking to hire a modeler/programmer with a stong statistical background. Email at sports1970@hushmail.com

    Started by Need a Progammer‎, 05-06-2010 12:42 AM
    • Replies: 0
    • Views: 2,543
    05-06-2010, 12:42 AM Go to last post
  24. Finance: best way of replicating a series using regressions

    Hello, I have approximately 50 series of foreign currency rates, many of which are fairly highly correlated. For each one, I want to find the...

    Started by tbrowne‎, 12-06-2009 12:29 PM
    • Replies: 2
    • Views: 3,436
    05-06-2010, 07:40 PM Go to last post
  25. repeated ANOVA 3, correlation between sd and mean = problem ?

    hi all, here the problem : I have 16 experimental conditions (3 factors => 4*2*2 lvl) and 14 subjects (n=14). dependent variable = reaction...

    Started by ++Manu++‎, 05-12-2010 07:26 AM
    • Replies: 0
    • Views: 2,424
    05-12-2010, 07:26 AM Go to last post
  26. proper distance in cluster with factor variable

    Dear colleagues. I have a group of variables, all of them evaluated from 1 to 5. I want to group the samples with cluster analysis. From different...

    Started by ajui‎, 05-21-2010 05:24 AM
    • Replies: 0
    • Views: 2,294
    05-21-2010, 05:24 AM Go to last post
  27. Generate new image from principal components of many images

    Hey everyone. I'm having a bit of difficulty with a neuroscience course - it's about the primary visual cortex. I have a bunch of image patches...

    Started by Wintermute‎, 05-21-2010 08:18 PM
    • Replies: 0
    • Views: 2,856
    05-21-2010, 08:18 PM Go to last post
  28. analyzing time series temp data

    I know some statistics but this is beyond me. I have a set of temperature measurements that were recorded at set intervals. When a certain condition...

    Started by zebeste‎, 05-20-2010 09:25 AM
    • Replies: 2
    • Views: 3,332
    05-22-2010, 09:45 PM Go to last post
  29. std error of multiple dummy regression

    Hello, I've run some multiple regression on R. The indepensent variables are all dummies plus an intercept. The results are good, and I've noted...

    Started by speretti‎, 06-02-2010 11:57 AM
    • Replies: 1
    • Views: 2,707
    06-02-2010, 12:01 PM Go to last post
  30. Standardizing by a mean?

    Greetings all, I have been approached by a colleague with what appears to me to be a tricky question. I'll try to be as succinct as possible: They...

    Started by figdancy‎, 06-02-2010 02:17 PM
    • Replies: 2
    • Views: 3,512
    06-02-2010, 02:42 PM Go to last post
  31. Question Confused about multifactorial design of proportions

    Dear all, I was given to evaluate data which consists of proportions, categorized in several groups. Different individuals had to make certain...

    Started by jw3‎, 06-03-2010 01:46 PM
    • Replies: 1
    • Views: 3,955
    06-03-2010, 02:35 PM Go to last post
  32. Comparing lower and upper quartiles while adjusting for covariates (Public Health)

    Hi Everyone - I am new to Talk Stats and grateful for the help. I am working on a public health project and trying to assess the degree to which...

    Started by enviropearson‎, 06-04-2010 03:57 PM
    • Replies: 1
    • Views: 5,370
    06-04-2010, 04:14 PM Go to last post
  33. analysing the fiability of market shares study

    Hello everybody! I'm a beginner data analyst in the retail/CRM business. I have been asked about classifying the fiability of a study. The...

    Started by Mineral‎, 05-20-2010 12:56 PM
    • Replies: 4
    • Views: 3,377
    06-07-2010, 09:53 AM Go to last post
  34. Help with economics question

    Hi, first time user. I am having trouble with a question and I just wanted some hints/pointers as to how to solve it. Suppose you have a...

    Started by amateurstudent101‎, 04-20-2010 03:07 AM
    • Replies: 1
    • Views: 2,666
    06-16-2010, 02:57 PM Go to last post
  35. financial return/coefficient of variation

    I am moving this question to this forum from the general statistics one because I just realized this forum covers finance. I would greatly...

    Started by ealeql‎, 02-26-2010 07:21 PM
    • Replies: 2
    • Views: 8,637
    06-16-2010, 03:07 PM Go to last post
  36. writing anova results for a paper

    Hi all, It is first time that I am trying to write a scientific paper based on statistical analysis and i am a bit confused. The results from...

    Started by eleftheria26‎, 06-17-2010 06:22 PM
    • Replies: 3
    • Views: 7,912
    06-17-2010, 07:37 PM Go to last post
  37. Unhappy Drawing PCA

    After doing factor analysis in SPSS, I have got a component matrix showing 6 components on the top row and all variables on the leftmost column. How...

    Started by ramkulkarni‎, 06-16-2010 12:45 PM
    • Replies: 3
    • Views: 4,187
    06-20-2010, 10:14 AM Go to last post
  38. Standard Deviation - Daily vs Monthly

    Hi community, I was wondering if you might help me with some Standard Deviation calcs. Apologies in advance if the questions are very basic. I'm...

    Started by zeerun‎, 06-20-2010 10:43 PM
    • Replies: 1
    • Views: 7,010
    06-21-2010, 09:02 AM Go to last post
  39. Unhappy sample size for medical statistics?

    Hello! I hope I'm posting in the right place.. I'm doing a research in biomedicine for my bachelor's degree (testing how many embolus a machine...

    Started by Hanna‎, 06-23-2010 03:02 PM
    • Replies: 2
    • Views: 5,343
    06-23-2010, 05:46 PM Go to last post
  40. Before and After Statistical Significance

    Hey, I was wondering how to do before and after statistics to show significance in the aftermath of a process. The situation is that we are...

    Started by JungleMarine‎, 06-24-2010 12:00 PM
    • Replies: 3
    • Views: 14,338
    06-24-2010, 12:39 PM Go to last post
  41. Fitting a distribution to summary data?

    I've been presented with tables of data giving the lengths of infants at various ages, and I'm asked to develop a website application that will...

    Started by SlideRule‎, 06-26-2010 09:00 AM
    • Replies: 0
    • Views: 4,979
    06-26-2010, 09:00 AM Go to last post
  42. A proper statistical test needed!

    Dear my friends, I am a computer science student, and I have a set of data. My data is divided in two groups (size of each group: n1=3928 and...

    Started by hamid_mirisaee‎, 06-26-2010 03:18 AM
    • Replies: 1
    • Views: 3,647
    06-26-2010, 09:51 AM Go to last post
  43. what to do after a chi² test

    hey, i compared the frequency of samples containing zero pupa vs samples containing at least one pupa in different stations. i carried out a chi²...

    Started by adrienbaudouin‎, 06-25-2010 09:10 AM
    • Replies: 3
    • Views: 144,826
    06-26-2010, 12:49 PM Go to last post
  44. Exact p-value conflict with exact 95% confidence interval

    Dear all, How would you interpret a situation where Pearson's exact p-value is 0.01, but the exact confidence interval for the risk ratio embraces...

    Started by Deebles‎, 06-25-2010 06:08 AM
    • Replies: 6
    • Views: 8,078
    06-28-2010, 05:43 AM Go to last post
  45. block of missing demographic info

    I am conducting hierarchical regression on a sample of 380, which is made up of respondents from 6 organizations. Due to a communication error, none...

    Started by MaryB‎, 06-28-2010 03:21 AM
    • Replies: 1
    • Views: 3,145
    06-28-2010, 06:56 PM Go to last post
  46. Multivariate data analysis

    Hello, I work as an data analyst at a company that develops gas sensors. Gas sensors can be tricky and to get as good sensor as possible we are...

    Started by Perry‎, 06-29-2010 02:44 AM
    • Replies: 1
    • Views: 2,223
    06-29-2010, 04:59 PM Go to last post
  47. t(75)=2.75

    I come across the following while reading the literature. I don't understand the meaning of it, particularly t(some number). "For both accuracy...

    Started by Dr.Appalayya‎, 07-01-2010 10:52 PM
    • Replies: 2
    • Views: 2,705
    07-02-2010, 06:43 AM Go to last post
  48. Multiple regression

    To arrive at the relative weights of four variables in their contribution to satisfaction with an appraisal system, I used multiple regression. The...

    Started by Dr.Appalayya‎, 07-02-2010 10:15 PM
    • Replies: 1
    • Views: 2,215
    07-03-2010, 01:49 PM Go to last post
  49. Repeated-measures ANOVA and correlated variables

    Hello everyone, To analyze the results of an experience for my master's thesis (at the crossroads between business and social sciences), I believe...

    Started by Roeslein‎, 07-04-2010 05:16 PM
    • Replies: 1
    • Views: 4,067
    07-04-2010, 06:08 PM Go to last post
  50. Correct form of likelihood function for data which has only an upper or lower bound

    (i.e. say we have done some experiments and a negative result was found, ruling out values for some physical quantity below(above) some limit defined...

    Started by kurros‎, 07-06-2010 02:43 AM
    • Replies: 3
    • Views: 4,040
    07-06-2010, 10:09 PM Go to last post
  51. Significance in 3d graphs

    hi all, I have a problem: I have to compare two 3D bar graphs. I have a total of 36 bars in a grid of 6x6. I need to know if each bar is...

    Started by eglepa‎, 07-06-2010 10:47 AM
    • Replies: 2
    • Views: 3,248
    07-06-2010, 11:20 PM Go to last post
  52. chi square problem.

    hi all: I tried google and the search function on this forum with no luck. I did the following experiment: Differentiate a stem cell into four...

    Started by jimao‎, 07-06-2010 10:38 PM
    • Replies: 2
    • Views: 3,268
    07-06-2010, 11:48 PM Go to last post
  53. One way ANOVAs or Two way ANOVA?

    Hello... I am new here but I am hoping you all can shed some light on a question I have. I am not sure how to best analyze my data... hopefully I...

    Started by hellokitty‎, 07-06-2010 05:05 PM
    • Replies: 8
    • Views: 14,922
    07-08-2010, 10:12 AM Go to last post
  54. Cool kappa when number of events is not predetermined

    Hi, I want to use kappa to assess intraobserver reliability when counting agressions between pigs. Two observers watch videorecording of pigs...

    Started by nchapinal‎, 07-12-2010 01:25 PM
    • Replies: 0
    • Views: 2,612
    07-12-2010, 01:25 PM Go to last post
  55. correlations when observations are not independant

    I have a dataset with 100 cows, 10 days per cow and feeding time and rumination time for each hour. We want to prove that feeding time of each hour...

    Started by nchapinal‎, 07-12-2010 01:26 PM
    • Replies: 0
    • Views: 2,384
    07-12-2010, 01:26 PM Go to last post
  56. Fisher's LSD in Systat10

    I have a multivariate data as detailed following. There are 3 group of plants; each group has five plants (biological replicates). I have quantities...

    Started by ramkulkarni‎, 07-13-2010 03:57 AM
    • Replies: 0
    • Views: 3,780
    07-13-2010, 03:57 AM Go to last post
  57. Question From EFA/CPF to advice

    For my graduation thesis I am doing research into Innovation. I have used a questionnaire (5 point Likert scale) to collect data from about 60...

    Started by Wigoo‎, 07-13-2010 04:31 AM
    • Replies: 0
    • Views: 2,263
    07-13-2010, 04:31 AM Go to last post
  58. Comparing matrices without a Mantel Test

    Hello everyone, I am a biologist at a University and have stumbled across an interesting problem. My data is organized into matrices. The matrices...

    Started by Neka42‎, 07-12-2010 01:58 PM
    • Replies: 7
    • Views: 7,122
    07-13-2010, 06:04 PM Go to last post
  59. SPSS Confussion, what test

    Hi there, We (my girlfriend and myself) are trying to work out a methodology/test we can run on the load of data that she has collated. ...

    Started by MissyPausch‎, 07-11-2010 10:59 AM
    • Replies: 4
    • Views: 3,795
    07-14-2010, 05:32 PM Go to last post
  60. Accruracy

    Hello, I am not quite sure if the title is right or not but here it goes. I am doing an internship at a manufacturing facility where I am working in...

    Started by jimmy0ad‎, 07-02-2010 08:40 AM
    • Replies: 5
    • Views: 3,397
    07-14-2010, 06:58 PM Go to last post

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