1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    1,942
+ Post New Thread
Page 7 of 294 FirstFirst 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 57 107 ... LastLast
Threads 361 to 420 of 17595

Forum: Statistics

Statistics course and homework discussion. Elementary statistics.

  1. Arrow Sticky Thread Sticky: We only provide homework help to those who show effort

    Welcome to Talk Stats Forum. In order to keep homework help effective and efficient, we request all members to abide by these guidelines: 1)...

    Started by quark‎, 09-30-2005 09:44 AM
    • Replies: 0
    • Views: 66,990
    09-30-2005, 09:44 AM Go to last post
  2. Sticky Thread Sticky: Forum Guidelines: Smart posting behavior pays off

    Welcome to talkstats.com, the place for statistics help. This is a guideline for people who want to ask a question on this forum and value a...

    Started by TheEcologist‎, 11-27-2010 12:13 PM
    • Replies: 1
    • Views: 197,217
    07-16-2014, 11:01 AM Go to last post
  1. Prediction interval question

    I have data fit with a loess curve. The predictor is time. I want to know what time has the highest predicted observation and the time's confidence...

    Started by agp‎, 04-27-2013 07:06 PM
    • Replies: 4
    • Views: 1,367
    04-28-2013, 11:29 AM Go to last post
  2. Addressing intraclass correlation coefficient issues

    ICC estimates changes according to the magnitude of the data. If the data are >1, ICC values are going to be way closer to 1 than if the data are...

    Started by agp‎, 03-17-2013 04:28 PM
    • Replies: 0
    • Views: 1,567
    03-17-2013, 04:28 PM Go to last post
  3. Statistics - Visualization

    There is only so much excel, SAS, R, JMP, and whatever software you use can do in terms of helping people understand your data. I want to explore...

    Started by agp‎, 09-11-2013 11:33 AM
    • Replies: 9
    • Views: 1,974
    06-21-2014, 04:46 PM Go to last post
  4. What analysis is needed to answer a question like this?

    Hi everybody, I am working on a project to analyze the financial characteristics of customers who purchase product A versus customers who purchase...

    Started by agp‎, 02-14-2014 08:25 AM
    • Replies: 2
    • Views: 1,666
    02-14-2014, 11:14 AM Go to last post
  5. Visualizing variance

    I have fit a logistic regression model and repeated it many times on bootstrapped populations. The variables are not standardized. Is there an easy...

    Started by agp‎, 02-24-2016 10:50 AM
    • Replies: 0
    • Views: 1,401
    02-24-2016, 10:50 AM Go to last post
  6. Randomized Complete Block Design (question about my design)

    Hello all- this is my first post on this lovely looking forum. This may be an advanced question! I would very much be grateful for any help. I...

    Started by agraham1‎, 05-11-2015 08:52 PM
    • Replies: 5
    • Views: 2,160
    05-12-2015, 12:19 PM Go to last post
  7. Exclamation Comparing Survey Results

    I just recently administered two surveys testing the effectiveness of a product. Each survey consisted of the same 3 questions and were answered on a...

    Started by AGregg‎, 11-14-2012 10:28 PM
    correlation, significance, statistic, t-test, z-test
    • Replies: 0
    • Views: 3,685
    11-14-2012, 10:28 PM Go to last post
  8. Which test(s) should I use?

    I need to test for statistical significance in 2 groups (95% confidence) : a control and a group given a different treatment. Each treatment and...

    Started by agtaco‎, 07-08-2012 06:29 PM
    • Replies: 0
    • Views: 1,374
    07-08-2012, 06:29 PM Go to last post
  9. This Thread has easy example dataset! :D Help choose the right test please!

    We're trying to test whether there is a difference in length of visit (in minutes) between our original website and: Revamped Website #1 Revamped...

    Started by aguazul‎, 06-27-2017 04:51 PM
    unbalanced data
    • Replies: 1
    • Views: 353
    07-03-2017, 04:07 PM Go to last post
  10. Sig Test

    Uhhhhh!!!! I don't know what the heck I'm doing. Two samples.... Sample one.... let's call them the 'hairy helmets'.... # = 49, mean = .83,...

    Started by agutts6‎, 08-24-2011 05:12 PM
    earthquakes, racist, significance
    • Replies: 10
    • Views: 4,102
    08-24-2011, 06:13 PM Go to last post
  11. "Variance" by STDEV and Different Means

    Im trying to measure 'consistency' in baseball scores amongst two different sample groups. For example, in a sample of 162 games each, one team...

    Started by agutts6‎, 07-01-2012 01:56 PM
    • Replies: 5
    • Views: 2,396
    07-03-2012, 04:32 AM Go to last post
  12. Significance Test

    PA in Sample Avg MLE Avg Result MLE Performance 3688 0.244116701 0.244432733 1.001294594 3513 0.241003236 0.235666705 0.977857015...

    Started by agutts6‎, 07-04-2012 01:22 PM
    • Replies: 0
    • Views: 1,489
    07-04-2012, 01:22 PM Go to last post
  13. Sig Test of Frequency

    Wondering how I approach this question.... Don't need it done for me (and it's not homework, btw)... but if somebody could point me in the right...

    Started by agutts6‎, 08-20-2012 12:08 AM
    • Replies: 1
    • Views: 2,298
    08-20-2012, 12:36 PM Go to last post
  14. subpopulation

    Suppose we have a group of 1000 customers, 100 customers are selected for a marketing pilot study. We want to know first if these 100 customers have...

    Started by aha123‎, 10-04-2010 01:14 PM
    • Replies: 0
    • Views: 1,966
    10-04-2010, 01:14 PM Go to last post
  15. Which test method?

    Group A Data: 2010-01: 100, 20, 20% => Units Made=100, Good Units=20, Yield Rate=20% 2010-02: 100, 25, 25% 2010-03: 200, 60, 30% 2010-04: ...

    Started by aha123‎, 10-05-2010 01:12 PM
    • Replies: 1
    • Views: 1,954
    10-05-2010, 02:19 PM Go to last post
  16. how to characterize discrepencies

    Suppose there are 3 company(C1, C2, C3) buying parts from 3 wholesalers(W1, W2, W3). Suppose there are 1000 parts in the catalog. For a particular...

    Started by aha123‎, 10-29-2010 06:11 PM
    • Replies: 1
    • Views: 2,050
    10-29-2010, 09:30 PM Go to last post
  17. mean

    Suppose my data contains # of visiting customers for each XYZ store for a given month. Suppose there are 200 XYZ stores and the total number of...

    Started by aha123‎, 05-12-2011 06:03 PM
    • Replies: 1
    • Views: 1,452
    05-12-2011, 09:10 PM Go to last post
  18. Cohen's d for one-sample/paired-samples vs. independent samples, and pooled SDs

    I have a few questions for you all about Cohen's d and pooled SDs! This is my first post, hope it goes in line with forum guidelines. 1)...

    Started by ahafri‎, 06-07-2012 12:46 PM
    cohen's d, effect size, pooled sds
    • Replies: 0
    • Views: 8,897
    06-07-2012, 12:46 PM Go to last post
  19. Which test/distribution to use for a a set of Randomly generated numbers?

    Hello I have generated random values but i am not sure if these data are trulty random or not. Which test should I use? A sample of 12 x 12 data...

    Started by Aharoun Baalan‎, 04-01-2010 01:24 PM
    • Replies: 11
    • Views: 5,841
    04-15-2010, 03:09 PM Go to last post
  20. Post homework help

    Hi, I have been working on my assignment all day and came to this problem, I am not sure what to calculate to get the answers requested, any help...

    Started by aharris05‎, 04-06-2011 02:31 PM
    statistics homework
    • Replies: 3
    • Views: 5,684
    04-06-2011, 03:17 PM Go to last post
  21. Testing for differences in productivity

    Hi guys, Given a sample dataset like this: Machine Units Produced Time taken A 100 2 A 200 3...

    Started by ahboy26‎, 06-07-2015 05:29 AM
    • Replies: 1
    • Views: 940
    06-07-2015, 10:52 AM Go to last post
  22. Parametric or non-parametric test ?

    Dear the members of group. I have 2 questions regarding my research which has 8 variables in which 6 of them are normally distributed and the rest...

    Started by Ahmad 2013‎, 06-10-2013 09:14 AM
    non parametric, parametric
    • Replies: 2
    • Views: 2,374
    06-11-2013, 10:28 PM Go to last post
  23. probability

    Four union men, two from a minority group, are assigned to four distinctly different one-man jobs, which can be ranked in order of desirability. ...

    Started by ahmed‎, 02-05-2012 01:06 AM
    • Replies: 1
    • Views: 1,846
    02-05-2012, 05:44 AM Go to last post
  24. Median and quartiles

    Hello dear mates; WHY the value of median and quartiles are non-unique ? thank you

    Started by ahmed.mazari‎, 10-09-2015 10:13 AM
    • Replies: 2
    • Views: 1,349
    10-09-2015, 03:13 PM Go to last post
  25. can someone solve this ?

    Started by Ahmedelwakeel‎, 12-15-2012 07:37 PM
    • Replies: 4
    • Views: 1,859
    12-16-2012, 04:16 AM Go to last post
  26. tough one !

    Hello guys , actually I got this problem as a bonus question to be delivered ASAP , I busted my ass trying to even start with it but I couldn't ! ...

    Started by Ahmedelwakeel‎, 12-21-2012 11:29 AM
    • Replies: 0
    • Views: 880
    12-21-2012, 11:29 AM Go to last post
  27. Is this a correct statement in statistics ?

    Hi All, I was reading in one paper the following: "All the results have been obtained by averaging over a number of experiments large enough to...

    Started by AhmedJedda‎, 03-30-2011 05:49 PM
    • Replies: 0
    • Views: 2,295
    03-30-2011, 05:49 PM Go to last post
  28. Meta Analysis-Scales

    Hi, I am new into meta analysis and doing research on spirituality in organizations. I want to collect all scales and their results(on...

    Started by ahmetx‎, 02-05-2017 01:09 AM
    meta analysis, scales
    • Replies: 0
    • Views: 1,036
    02-05-2017, 01:09 AM Go to last post
  29. Interesting Stats Question: Verifying Algorithmic Trading Returns

    Hey guys, First off, thank you to anyone who helps out! I haven't been in statistics for a while and, quite honestly, learning the T-Test online...

    Started by ahouriani‎, 10-13-2014 09:33 PM
    • Replies: 0
    • Views: 1,222
    10-13-2014, 09:33 PM Go to last post
  30. CI for population proportions

    I am trying to figure out what criteria makes the CI interval valid. I am hoping someone could help me out. Thank you for your time.

    Started by ahuryta‎, 04-01-2012 09:59 PM
    • Replies: 1
    • Views: 1,745
    04-02-2012, 09:06 AM Go to last post
  31. Linear regression & correlation for time series data

    Hi all, I've searched wide and can only find warnings about NOT applying common linear regression and correlation statistics to time series data,...

    Started by aibing‎, 09-27-2012 10:41 AM
    correlation, linear regression, time series
    • Replies: 2
    • Views: 1,734
    09-27-2012, 10:52 PM Go to last post
  32. Appropriate to use time as covariable in ANCOVA?

    Hello stats people, I need to assess whether the rate of increase (in soil carbon) differs significantly between two groups (forests). I believe...

    Started by aibing‎, 09-26-2012 10:33 PM
    ancova
    • Replies: 11
    • Views: 2,923
    09-30-2012, 10:50 PM Go to last post
  33. Question Working out standard deviation for three random variables with different sized ranges

    X = {1,2,3,4,5,6}, Y = {1,2,3,4}, Z = {2,4,6,8}. The question is: work out standard deviation of A = 2S-1, where S = the sum of the three random...

    Started by aigarsplatinum‎, 06-12-2016 05:45 PM
    probability, randomvariable, standarddeviation, statistics assignment, variance
    • Replies: 0
    • Views: 1,198
    06-12-2016, 05:45 PM Go to last post
  34. Quick help - may be easy for any stats student

    Hi, I have a question: In our company , we have a sampling criteria to judge quality, i would like to know which formula to use. We are a company...

    Started by aih786‎, 12-06-2013 05:14 PM
    • Replies: 0
    • Views: 956
    12-06-2013, 05:14 PM Go to last post
  35. t-stat and p-value

    Dear all, I have estimated several regressions using loop. I have managed to save the estimated alphas as new variables. Now I need to obtain the...

    Started by Aiko‎, 07-15-2014 04:17 PM
    • Replies: 4
    • Views: 2,089
    07-17-2014, 05:56 PM Go to last post
  36. Post I need help on a statistics project

    Private message me if you'd like to help me out...pretty please :confused:

    Started by aime‎, 12-12-2016 12:51 AM
    • Replies: 0
    • Views: 2,419
    12-12-2016, 12:51 AM Go to last post
  37. Dependence of Bimodal Distribution Analysis on Sample Size

    Hi, Recently a friend asked a question which we could not come up with an answer, it is most probably easy to answer. In an experiment there...

    Started by AintheT‎, 05-07-2012 11:10 AM
    • Replies: 0
    • Views: 3,163
    05-07-2012, 11:10 AM Go to last post
  38. Help choosing apropriate test

    Hi to all, What is an appropriate inferential test to determine if several variables are interrelated. For example, Does age, income, test score,...

    Started by airmont‎, 04-09-2008 05:56 PM
    • Replies: 0
    • Views: 1,767
    04-09-2008, 05:56 PM Go to last post
  39. Pre, post-test analysis (t-test ?)

    Dear stats community members, Found an article on the web on evaluating "Index of Learning" based on pre-test and post-test scores. Details are in...

    Started by aja‎, 08-08-2012 07:23 AM
    • Replies: 2
    • Views: 3,533
    08-08-2012, 08:51 AM Go to last post
  40. degrees of freedom in a survey

    Removed question........

    Started by ajanderson‎, 07-07-2017 11:37 AM
    • Replies: 1
    • Views: 464
    07-07-2017, 12:08 PM Go to last post
  41. Setting up a database for election results

    Dear all I am trying to analyse some election data with the ultimate aim of building a predictive model. The elections use STV so I am...

    Started by ajb1970‎, 11-15-2009 07:12 AM
    • Replies: 5
    • Views: 2,757
    11-17-2009, 05:25 PM Go to last post
  42. How to do a robust regression

    Dear all I am trying to make sense of some election results. I want to know which of my variables influence the variable '1st votes' and also...

    Started by ajb1970‎, 11-22-2009 01:26 PM
    • Replies: 0
    • Views: 3,077
    11-22-2009, 01:26 PM Go to last post
  43. Which test to use

    What test do I need to use if I want to find out if there is a relation between the place where somebody works and his opinion about economic issue....

    Started by AJB25‎, 10-18-2010 12:01 PM
    • Replies: 11
    • Views: 3,128
    10-26-2010, 12:51 PM Go to last post
  44. CLT and sample distribution of sample mean

    On a particular stretch of highway, the state police know that the average speed is 62 mph with a standard deviation of 5 mph. On a busy holiday...

    Started by ajc‎, 10-20-2014 10:38 PM
    • Replies: 1
    • Views: 3,671
    10-21-2014, 10:25 AM Go to last post
  45. Data varies with Date. how to measure overall change

    Hi everyone, I am new to statistics. A little help would be much appreciated. I have a data ( volume) which looks like this: Cities ...

    Started by ajeet‎, 07-26-2015 10:52 AM
    • Replies: 0
    • Views: 1,101
    07-26-2015, 10:52 AM Go to last post
  46. Comparing temperature time series

    I have a bit of a problem finding a way to quantify the difference (or lack thereof) between two temperature time series. Now as I understand it this...

    Started by ajf‎, 12-29-2009 09:26 AM
    • Replies: 0
    • Views: 2,379
    12-29-2009, 09:26 AM Go to last post
  47. fishers exact/shi sq assistance

    Hi, I am a very novice researcher and need some advice re: fishers exact test (FET). My knowledge of statistics is poor to say the least so please...

    Started by ajf103‎, 08-11-2011 07:58 AM
    • Replies: 0
    • Views: 1,625
    08-11-2011, 07:58 AM Go to last post
  48. Help ASAP

    I have no idea how to solve any of this... I think my one problem is I am sick my other problem is I may need a tutor (any recommendations). Any help...

    Started by ajgrl57‎, 11-09-2008 07:38 PM
    • Replies: 0
    • Views: 2,330
    11-09-2008, 07:38 PM Go to last post
  49. Would I run an ANOVA or MANCOVA

    It is this lame question that I have to answer about redesigning a study. It is completely hypothetical. So I don't have everything I should have. i...

    Started by ajitpoore‎, 06-26-2016 02:33 PM
    • Replies: 0
    • Views: 1,624
    06-26-2016, 02:33 PM Go to last post
  50. Which method of data analysis

    Okay so I am tired. here is my issue. If I have a three data sets Parents education Student gender And student pre&post test scores ...

    Started by ajitpoore‎, 06-26-2016 06:05 AM
    • Replies: 2
    • Views: 1,279
    06-26-2016, 06:40 AM Go to last post
  51. Statisitical method to assess the competency of an individual?

    I will summarise my problem first. I want to write a platform for reviewing doctors in a country. The names of doctors will be added by the users...

    Started by ajjitchandran‎, 05-18-2015 12:46 AM
    ranking a professional
    • Replies: 1
    • Views: 1,211
    05-19-2015, 02:49 PM Go to last post
  52. Question Please Help Stats Confidence Level

    This my first posting. The Bank wants to estimate the mean dollars that each card holder will spend each month. It would like to be within plus...

    Started by ajjones‎, 10-22-2005 08:03 PM
    • Replies: 3
    • Views: 4,288
    10-30-2005, 06:52 PM Go to last post
  53. question on 2 tailed Z test

    If you performed a 2 tailed z test with alpha= 0.05, the null hypothesis will be rejected if the computed value of the z stats is higher than ______...

    Started by ajk003‎, 02-24-2006 02:37 PM
    • Replies: 1
    • Views: 4,950
    02-24-2006, 02:40 PM Go to last post
  54. question on research problem

    I'm having some trouble with conducting a hypothesis test: Suppose it has been esablished that musicians, as a general population, have a mean IQ...

    Started by ajk003‎, 02-24-2006 03:00 PM
    • Replies: 1
    • Views: 2,278
    02-24-2006, 03:20 PM Go to last post
  55. Question on decision rule

    I'm a little confused on how to make a decision rule given an alpha value. For example if the problem was a two ailed z test with a alpha of .03,...

    Started by ajk003‎, 03-02-2006 10:53 PM
    • Replies: 3
    • Views: 12,930
    03-03-2006, 02:17 PM Go to last post
  56. 95% confidence interval

    I'm not sure how to construct a 95% confidence interval for a one tailed test. I know that for a two tailed test, it's just the critical value...

    Started by ajk003‎, 03-03-2006 03:07 PM
    • Replies: 1
    • Views: 3,054
    03-03-2006, 03:13 PM Go to last post
  57. question about t-test

    Im a little confused about the difference between a t test for one sample, for two independent sample, and two related samples. For this problem: ...

    Started by ajk003‎, 03-10-2006 03:36 PM
    • Replies: 3
    • Views: 2,593
    03-10-2006, 04:20 PM Go to last post
  58. t-test

    I'm confused about when to use a t test for two independent samples and when to use a repeated measures t test. When there is a pacebo group in an...

    Started by ajk003‎, 03-15-2006 02:18 AM
    • Replies: 1
    • Views: 1,912
    03-16-2006, 08:49 AM Go to last post
  59. p value

    when finding p value for chi square test or t test, does it matter whether it's a one sample or two sample test? EX: in order to find the p value...

    Started by ajk003‎, 03-17-2006 05:30 AM
    • Replies: 1
    • Views: 2,268
    03-17-2006, 12:07 PM Go to last post
  60. Instructions on how to install a package in R

    I am trying to install a package in R called RMySQL, but the package comes in a .tar.gz file. I have only installed packages in R that self-install....

    Started by ajk1982‎, 06-08-2012 12:44 PM
    • Replies: 3
    • Views: 1,769
    06-08-2012, 06:24 PM Go to last post

+ Post New Thread
Page 7 of 294 FirstFirst 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 57 107 ... LastLast

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.

Order threads in...

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

Icon Legend

Contains unread posts
Contains unread posts
Contains no unread posts
Contains no unread posts
More than 15 replies or 300 views
Hot thread with unread posts
More than 15 replies or 300 views
Hot thread with no unread posts
Closed Thread
Thread is closed
Thread Contains a Message Written By You
You have posted in this thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats