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Forum: Statistics

Statistics course and homework discussion. Elementary statistics.

  1. 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: 196,642
    07-16-2014, 11:01 AM Go to last post
  2. 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: 66,663
    09-30-2005, 09:44 AM Go to last post
  1. Any suggestions?

    I am using Systat 13.1 to predict the influence of tobacco use on blood flow. Tobacco use is an independent binary variable (1,0, yes/no) and blood...

    Started by bgaynes‎, 12-26-2012 04:48 PM
    • Replies: 9
    • Views: 1,115
    12-31-2012, 03:23 PM Go to last post
  2. Angry Any suggestions??

    I am working on a project to construct and report results of a regression model, but I am stuck on trying to find an idea to construct. I originally...

    Started by Twinkie‎, 04-18-2006 02:24 AM
    • Replies: 3
    • Views: 2,419
    04-19-2006, 09:59 AM Go to last post
  3. Question any takers on this one?

    Recently the national average yield on municipal bonds has been μ = 4.19%. A random sample of 16 Arizona municipal bonds gave an average yield of...

    Started by Rachelspeelman‎, 08-07-2007 05:30 AM
    • Replies: 0
    • Views: 1,855
    08-07-2007, 05:30 AM Go to last post
  4. Any tool/package for model validation in Logistic Regression?

    Hello! This question is related to an earlier thread of mine about logistic regression modelling. I would like to know if anyone knows any...

    Started by gianmarco‎, 07-14-2014 01:29 AM
    • Replies: 0
    • Views: 1,283
    07-14-2014, 01:29 AM Go to last post
  5. Anybody give me idea about my solution?

    My solution is n =30, = 0.795, s^2 =0.000586 99% confidence interval of σ = (0.018,0.036)

    Started by luckystar‎, 12-01-2014 12:50 AM
    • Replies: 0
    • Views: 1,416
    12-01-2014, 12:50 AM Go to last post
  6. Anyone can help me solve this Bayes statistics peoblem?Thanks so much!

    1. Exchangeability with known model parameters: For each of the following three examples, answer: (i) Are observations y1 and y2 exchangeable? (ii)...

    Started by solarboy‎, 10-09-2014 03:09 PM
    • Replies: 0
    • Views: 1,551
    10-09-2014, 03:09 PM Go to last post
  7. Anyone familiar with the Lo Mackinlay Variance ratio statistic/test?

    I'm trying to compute the Variance ratio statistic for some stock returns I have. I have a data set of 3600 daily stock returns and I'm trying to...

    Started by c2q‎, 02-25-2012 08:04 PM
    • Replies: 0
    • Views: 3,132
    02-25-2012, 08:04 PM Go to last post
  8. Anyone good with histograms can you help me

    I can't copy my hw due tonight but I am having trouble finding two answers to it. It's finding a percentage from the graphy and the most crowded...

    Started by r1terrell‎, 01-28-2008 05:36 PM
    • Replies: 0
    • Views: 2,915
    01-28-2008, 05:36 PM Go to last post
  9. Anyone great at Statistics and want to make $40 for about 30 mins. of your time?

    I'm conducting an online assessment. It's via a tutor website (USA based and well known) think artificial intelligence. I have a master account and...

    Started by StatsStudy‎, 07-01-2011 04:44 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 5,304
    07-03-2011, 12:33 AM Go to last post
  10. Anyone has The Practice of Statistics Prep for the AP Exam Supplement book?

    Does anybody has The Practice of Statistics Prep for the AP Exam Supplement book? Look like this...

    Started by alliecrowden‎, 06-07-2010 10:27 PM
    • Replies: 0
    • Views: 5,195
    06-07-2010, 10:27 PM Go to last post
  11. Anyone know how to do Correlation and Regression?

    I'm working on problems dealing with correlation and regression. It tells me that I can use the TI-83 calculator and punch in paired data lists L1...

    Started by BigNiner19‎, 09-28-2006 06:33 PM
    • Replies: 0
    • Views: 3,378
    09-28-2006, 06:33 PM Go to last post
  12. Red face anyone know how to do this one?

    Recently the national average yield on municipal bonds has been μ = 4.19%. A random sample of 16 Arizona municipal bonds gave an average yield of...

    Started by Rachelspeelman‎, 08-06-2007 05:38 PM
    • Replies: 0
    • Views: 1,765
    08-06-2007, 05:38 PM Go to last post
  13. Question anyone know how to do this?

    Long-term history has shown that 65% of all elected offices in a rural county have been won by Republican candidates. This year there are 5 offices...

    Started by Rachelspeelman‎, 08-07-2007 05:27 AM
    • Replies: 1
    • Views: 1,738
    08-09-2007, 05:54 PM Go to last post
  14. anyone know how to do this? im stumped.

    thanks in advance.

    Started by titanlord1‎, 03-29-2014 07:09 PM
    • Replies: 7
    • Views: 1,602
    03-30-2014, 10:44 AM Go to last post
  15. Anyone want to look at my SPSS file?

    Hi folks - First post. I suspect this is a common question in statistics... What am I doing? I have collected data from 3 groups - A, B & C....

    Started by kuwona‎, 07-06-2009 01:11 PM
    • Replies: 3
    • Views: 2,839
    07-15-2009, 01:15 PM Go to last post
  16. AP Statistics Confidence interval-Please Help

    I am having trouble with this question The following data is the age at death (in days) for infants who died from sudden infant death syndrome...

    Started by serenamae1216‎, 03-08-2013 08:30 PM
    • Replies: 2
    • Views: 2,775
    03-08-2013, 09:15 PM Go to last post
  17. APA Report Results Stats help

    Hi, I have no idea how to present results data for a psych APA report. Any help at all would be greatly appreciated. Tables 2 and 4 present...

    Started by phillycheese‎, 10-13-2008 07:20 PM
    • Replies: 1
    • Views: 2,676
    10-14-2008, 07:25 AM Go to last post
  18. APA reporting single main effects

    Hi, thank you in advance for your help! I performed a repeat measures ANOVA on my data; the interaction was significant so I performed a single...

    Started by fellis‎, 03-28-2014 05:23 AM
    • Replies: 0
    • Views: 1,508
    03-28-2014, 05:23 AM Go to last post
  19. Apparent contradiction in Mann-Whitney-Wilcoxon test results

    I have 2 data sets, each N=10, that I would like to compare. They fail Levene's test for homogeneity of variances, and for this reason, I can't use...

    Started by statsSeeker‎, 05-28-2013 09:39 PM
    mann-whitney test, mann-whitney u
    • Replies: 5
    • Views: 1,580
    05-29-2013, 11:01 AM Go to last post
  20. Apples and Pears

    Hi all, I have a challenge for you, this might be quite easy or quite difficult... as I neither know the answer nor have any idea of the solution....

    Started by Bobbins‎, 07-02-2008 12:50 PM
    • Replies: 2
    • Views: 4,152
    07-07-2008, 01:04 PM Go to last post
  21. Application of F-statistic and Mallows' Cp

    Hi, I'm looking for some referable references that indicate the followings: 1) F-statistic in comparing two models should be employed only where...

    Started by re444‎, 02-10-2009 06:54 AM
    • Replies: 3
    • Views: 5,089
    02-10-2009, 06:25 PM Go to last post
  22. Application of Multivariate Analysis

    The following situation is proven valuable where multivariate analysis can be applied. This example is taken from the book `Applied Multivariate...

    Started by Cynderella‎, 01-09-2015 08:10 AM
    multi-variable, multiple regression, multivariate analysis, multivariate data
    • Replies: 0
    • Views: 2,311
    01-09-2015, 08:10 AM Go to last post
  23. Application of PCA component scores in regression model.

    Hi, Is there anybody who is more or less "fluent" in principle component analysis? I'd need to use 20 categorical variables (2 or 5 or 7...

    Started by ZikO‎, 09-08-2011 02:47 PM
    • Replies: 12
    • Views: 7,099
    09-15-2011, 06:16 AM Go to last post
  24. Application of Statistics

    Hi Every one, I want to carry out a research on how teaching methodology affect the performance of students in a secondary school. Please how...

    Started by taiwo.omoloba‎, 07-20-2013 04:59 AM
    • Replies: 0
    • Views: 1,093
    07-20-2013, 04:59 AM Go to last post
  25. Smile Application of T-Distribution

    Hello Guys, Ok. I have never came across a situation like this before so I am not quite sure if I could use T-Distribution to construct a...

    Started by jimmy0ad‎, 06-24-2010 09:04 AM
    • Replies: 2
    • Views: 8,297
    06-28-2010, 02:12 AM Go to last post
  26. Application Specific: Strange behaviour of students T-test compared to std.dev plots

    Hello all, ******************************************************************** SEE THE FITH POST OF THIS THREAD TO GET A BETTER IDEA OF THE ISSUE...

    Started by ngio‎, 11-20-2012 12:15 PM
    • Replies: 7
    • Views: 1,728
    11-22-2012, 01:50 PM Go to last post
  27. Question Applied Multivariate Methods exam practice questions needed

    anyone who has practice questions for : - Principle Component Analysis - discriminant analysis - factor analysis - cluster analysis i am...

    Started by zellle‎, 08-17-2010 08:43 AM
    • Replies: 0
    • Views: 3,285
    08-17-2010, 08:43 AM Go to last post
  28. Applied statistics qn: confidence intervals

    I'm a data analyst in a manufacturing comany, a one trick pony with a limited statistical toolbox that used to be adequate for my ANOVA-based daily...

    Started by statNovice‎, 04-15-2009 08:54 AM
    • Replies: 0
    • Views: 2,046
    04-15-2009, 08:54 AM Go to last post
  29. Applying Normal Distribution

    So here is the question followed by what the steps I took to solve it. Please let me know if I have done this correctly: Question: The time...

    Started by siope1kd‎, 03-30-2013 10:08 PM
    normal distribution, z score
    • Replies: 0
    • Views: 1,372
    03-30-2013, 10:08 PM Go to last post
  30. Applying Statistical Analysis to Real World Data

    Hi all, Background I'm an intern at a large retailer working on a summer project. The project is to identify why stores with very similar sales...

    Started by nolde05‎, 07-07-2010 10:19 PM
    • Replies: 2
    • Views: 5,125
    07-08-2010, 11:46 AM Go to last post
  31. Applying the Q test twice to the same data set (Why not?)

    Hello Everyone. Scenario You apply the Q test to a data set and find that you may indeed remove a particular datum from the data set. ...

    Started by B.W. McCann‎, 11-07-2006 02:01 AM
    • Replies: 3
    • Views: 2,694
    11-08-2006, 12:28 AM Go to last post
  32. appreciate any help finding s of e squared

    I have been working on this problem for quite a while with my TI 84 plus and am in need of some guidance if possible. I was also given a different...

    Started by gg4bella‎, 05-09-2010 10:37 PM
    • Replies: 2
    • Views: 3,384
    05-10-2010, 02:42 PM Go to last post
  33. Approach to adjusting for multiple testing problem with multiple chi-square tests

    Hi, I work in a UK university. Each year finalist students take part in a National Student Survey responding to 30 questions on aspects of their...

    Started by SteveTobin‎, 07-14-2015 05:00 AM
    boneferroni correction, chi sq test, fisher's exact test, post hoc tests
    • Replies: 0
    • Views: 1,133
    07-14-2015, 05:00 AM Go to last post
  34. approaches for non-normal (skewed) cost distribution across months?

    I have a project with hundreds of cost line items in Excel. Each cost needs to be spread over a number of months in something approximating a bell...

    Started by benbulloch‎, 02-20-2014 09:20 PM
    • Replies: 0
    • Views: 3,108
    02-20-2014, 09:20 PM Go to last post
  35. appropiate post hoc test

    Hi May someone help me with this? I have done a 2 factor univariate ANOVA, although some of my data is not still normally distributed (Kolmogorov...

    Started by sirhoppel‎, 05-10-2006 02:58 PM
    • Replies: 1
    • Views: 3,297
    05-10-2006, 03:38 PM Go to last post
  36. appropiate transformation for exponential relationship

    zdfagadfgsdfg

    Started by themused‎, 10-10-2008 04:10 PM
    • Replies: 0
    • Views: 2,358
    10-10-2008, 04:10 PM Go to last post
  37. Appropriate analysis

    Hi, Im looking at running a non-parametric test on ranked data. I have two variables. Each subject completed two conditions which included 3...

    Started by irishstat‎, 06-21-2013 04:46 AM
    • Replies: 1
    • Views: 1,499
    06-21-2013, 09:20 AM Go to last post
  38. Appropriate analysis for Likert scale items.

    Hey, everyone! Quick question regarding analysis of survey (which aims to asses women's views and attitudes towards offenders with mental health...

    Started by Elevatorprices‎, 03-23-2014 08:20 PM
    • Replies: 7
    • Views: 2,140
    03-24-2014, 02:47 PM Go to last post
  39. Appropriate Choice of Model to look at differences

    Hi there, I have a question about what type of model / analysis I should use for the type of data I would like to analyse. I have a total of 60...

    Started by drewsta‎, 04-16-2015 03:08 AM
    • Replies: 1
    • Views: 1,220
    04-16-2015, 04:02 AM Go to last post
  40. Appropriate data for ANOVA?

    Hey all, I am beginning a study of gesturing. My research question is whether participants employ gestures in ways that are sensitive to recipient...

    Started by jwallin‎, 11-10-2008 02:01 AM
    • Replies: 5
    • Views: 2,573
    11-11-2008, 10:16 PM Go to last post
  41. Appropriate graphical representation of a sample?

    Hi guys, its been a few years since I took statistics classes in college, so my memory is awfully fuzzy. I have a small set of data (30 points) that...

    Started by younggun‎, 07-18-2013 01:26 PM
    • Replies: 1
    • Views: 1,142
    07-18-2013, 01:29 PM Go to last post
  42. Appropriate Grouping of Data

    I have a problem where there is a control and experimental group. Each group has 2 subjects and each of the subjects has 5 replicate values. I...

    Started by Universal Exports‎, 04-22-2015 12:31 PM
    • Replies: 6
    • Views: 1,364
    04-23-2015, 03:14 PM Go to last post
  43. Appropriate link-function in a Poisson Model

    Hi, does somebody know why the log-link function is always assumed to be the "standard" link function in Poisson models? E.g. regarding count data...

    Started by mmercker‎, 12-15-2015 05:53 AM
    link function, poisson regression
    • Replies: 0
    • Views: 1,125
    12-15-2015, 05:53 AM Go to last post
  44. appropriate multiple comparison test following several chi square

    Dear all, I have the following problem: there are three groups of people in my analysis and I have 17 domains that are basically questions (yes or...

    Started by Rerun‎, 08-31-2014 11:48 AM
    • Replies: 8
    • Views: 1,664
    09-01-2014, 04:12 PM Go to last post
  45. Appropriate pathway to take in this biochemistry-related question?

    http://imgur.com/VrrqO04 Thank you!

    Started by lunaterrasol‎, 11-27-2013 09:48 AM
    • Replies: 2
    • Views: 1,244
    11-27-2013, 10:23 AM Go to last post
  46. Appropriate SAS test for comparing within and between seasons?

    I am a new animal science/agronomy grad student trying to analyze my data. I have a very limited stats background (one class with an interesting...

    Started by tio03‎, 01-16-2015 03:54 PM
    • Replies: 0
    • Views: 758
    01-16-2015, 03:54 PM Go to last post
  47. Appropriate Statistical Test - Guidance

    Dear Talkstats Member, I am doing Msc and now in the midst of analyzing data. Since i have no background in statistics, i found it quit...

    Started by harishnan85_03‎, 03-28-2011 01:03 AM
    • Replies: 3
    • Views: 2,660
    03-30-2011, 11:34 PM Go to last post
  48. Appropriate statistical test for lesion distribution

    Hi, I have 2D image data of lesions in independent samples of diseased tissue. I would like to know whether the total lesion area is greater in...

    Started by mpkrebs‎, 08-15-2015 07:52 AM
    beta distribution
    • Replies: 1
    • Views: 982
    08-15-2015, 11:31 AM Go to last post
  49. Appropriate statistical test for RIFLE Criteria

    I need help choosing the appropriate statistical test for my primary endpoint of my resident research project and thought I'd join a forum to help...

    Started by screwedupsmitty‎, 04-13-2014 07:00 PM
    • Replies: 1
    • Views: 1,160
    04-14-2014, 05:37 PM Go to last post
  50. Appropriate statistical test to use- Fishers exact?

    Hi. I was hoping someone would be able to help me where my supervisors can't! I'm writing up my M.Sc. dissertation and really stuck on the...

    Started by SRae‎, 07-29-2012 10:21 PM
    • Replies: 0
    • Views: 1,962
    07-29-2012, 10:21 PM Go to last post
  51. Appropriate statistical test?

    Hi, I apologise because I'm sure this question must have been asked already but I couldn't find anything from a quick search. I need to compare...

    Started by BenN‎, 01-20-2014 08:21 AM
    • Replies: 0
    • Views: 1,037
    01-20-2014, 08:21 AM Go to last post
  52. Question Appropriate statistical tool

    I am looking for the appropriate statistical methods to apply to a test. We are doing a study in which we have triplicate data sets and are looking...

    Started by skylar.kozak‎, 08-09-2010 04:56 PM
    • Replies: 0
    • Views: 2,852
    08-09-2010, 04:56 PM Go to last post
  53. Appropriate Test

    Dear All, I have a data with subjects of three visits information. In the first visit they received placebo and in the second and...

    Started by Ramsathish S‎, 07-18-2007 09:45 PM
    • Replies: 3
    • Views: 2,032
    07-19-2007, 01:22 AM Go to last post
  54. Appropriate test

    Hi everyone we did an experimnt at school on the foraging behaviour of stickleback fish . High density daphnia or low density. There was 5 fish and i...

    Started by martyn02‎, 11-24-2007 02:38 PM
    • Replies: 3
    • Views: 2,118
    11-29-2007, 11:24 AM Go to last post
  55. Appropriate test for non-normal data with less than two groups?

    Hello, My question is about what kind of statistical test I can use with my data. I have two groups of 6 participants (one control group and one...

    Started by lv.hmltn‎, 03-23-2017 01:07 PM
    • Replies: 2
    • Views: 1,035
    03-28-2017, 04:19 AM Go to last post
  56. Appropriate test for two sets of answers - Chi squared?

    I am doing a critical analysis of a published research paper which contains some descriptive stats, but little statistical analysis. I was wondering...

    Started by Azzurosky‎, 10-17-2011 09:57 PM
    • Replies: 4
    • Views: 1,865
    10-20-2011, 11:24 PM Go to last post
  57. appropriate test?

    Hello. I am a tourism student and I have a course work with these data set: - 1 year stat of Visitors by country of origin - 1 year stat of...

    Started by mauve928‎, 10-07-2010 03:12 PM
    • Replies: 0
    • Views: 1,511
    10-07-2010, 03:12 PM Go to last post
  58. Smile Appropriate tests for hypotheses

    Hi everyone Just after some assistance as I'm having some trouble knowing which statistical tests to use to test some of the hypotheses for my...

    Started by cens‎, 07-29-2011 05:29 AM
    • Replies: 2
    • Views: 2,208
    07-29-2011, 08:11 PM Go to last post
  59. Appropriate tests to use? ANOVA and Friedman two way ANOVAby ranks?

    Hi there, I am completely stumped on which tests to use for a study that I am working on. Basically, I have two groups, 1 & 2. The two groups are...

    Started by BOAZ‎, 10-05-2011 11:18 PM
    anova, friedman two way anova
    • Replies: 2
    • Views: 3,215
    10-09-2011, 07:39 AM Go to last post
  60. 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: 2,888
    09-30-2012, 10:50 PM Go to last post

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