1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    1,951
+ Post New Thread
Page 9 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 27 28 59 109 ... LastLast
Threads 481 to 540 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: 67,011
    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: 197,244
    07-16-2014, 11:01 AM Go to last post
  1. Correlation of two factors, which way is better?

    Hello, It's my first post here, I'm glad to be here. I'm writting a thesis about real estate markets in Poland in last few years, mainly about 5...

    Started by alaq‎, 03-09-2014 12:20 PM
    • Replies: 0
    • Views: 1,060
    03-09-2014, 12:20 PM Go to last post
  2. Does normality improve a multivariate hierarchical cluster analysis?

    Hi, I applied transformations (normalization) and standardization to multiple variables before applying a hierarchical cluster analysis, because...

    Started by Alba‎, 08-08-2011 12:02 PM
    • Replies: 0
    • Views: 1,884
    08-08-2011, 12:02 PM Go to last post
  3. ECG Database Analysis

    Hello, I'm analysing a set of 400 ECG signals (each one of a duration of 30 sec). I want to get the mean signal of all my signals but I don't...

    Started by alba2691‎, 05-28-2015 01:28 PM
    ecg, mean signal, representativeness, signal analysis, statistics help
    • Replies: 1
    • Views: 1,262
    05-29-2015, 12:26 PM Go to last post
  4. Help needed in experimental design and stats test for an intertidal marsh

    Hi All, I need some advice regarding experimental design and stats test selection. I have an area of intertidal marsh that we replanted following...

    Started by Albafly‎, 10-26-2010 02:58 PM
    • Replies: 1
    • Views: 1,968
    10-26-2010, 06:50 PM Go to last post
  5. Interpreting Results in Primer

    My frequency distribution of R varies from <-0.07 99% <0.10 at 0.1% but the R (Global) is equal 0.484 at 0.1%. what results to consider?

    Started by Albano‎, 09-03-2013 05:37 AM
    • Replies: 0
    • Views: 2,318
    09-03-2013, 05:37 AM Go to last post
  6. Wins > 50% for everyone in a pool of players

    Is it possible for every single player in a pool of players to end up with a > 50% win/loss ratio. Providing that the game being played can have...

    Started by albatross4242‎, 04-08-2015 04:05 PM
    • Replies: 2
    • Views: 1,371
    04-08-2015, 06:27 PM Go to last post
  7. analysis of classic Battleship game

    Hi, This must be a classic statistical problem, but I suspect I am just not using the standard name for the problem. I would like to find a...

    Started by albuck‎, 01-05-2009 05:43 PM
    • Replies: 1
    • Views: 3,256
    01-07-2009, 12:18 AM Go to last post
  8. comparing % rates of increase

    New Member asking question. Revenue increases 111%. Expenses increase 79%. Can I say that revenue increased 140% faster (111/79=140) than...

    Started by alch94‎, 03-26-2008 07:03 PM
    • Replies: 0
    • Views: 3,527
    03-26-2008, 07:03 PM Go to last post
  9. Comparing correlation coefficients

    Hi:) I am new to the forum nut I hope to find help here :) So here is the situation: I have a dataset with experimental values of Y containing...

    Started by alchemist_bg‎, 09-03-2013 04:03 PM
    • Replies: 3
    • Views: 2,076
    09-07-2013, 05:06 AM Go to last post
  10. Need explanation on Ordinal Logistics Regression

    Could somebody explain --in as plain English as possible-- how to use and interpret the results from running Ordinal Logistics Regression in SPSS....

    Started by Aldus‎, 04-30-2012 02:41 AM
    • Replies: 0
    • Views: 3,378
    04-30-2012, 02:41 AM Go to last post
  11. Nonparametric multiple linear regression with SPSS

    Is there a way to conduct nonparametric multiple regression analysis using SPSS? If yes, can you provide some explanations on this regard. I...

    Started by Aldus‎, 04-29-2012 05:57 PM
    non parametric, non-parametric, nonparametric statistics
    • Replies: 3
    • Views: 35,738
    04-30-2012, 02:25 AM Go to last post
  12. satellite data precision

    Hi all, Iím looking at some satellite data files. They are profiles of chemical atmospheric components and each profile has an associate estimate...

    Started by ale‎, 03-31-2011 07:47 PM
    average, error estimation, precision, statistics
    • Replies: 0
    • Views: 2,347
    03-31-2011, 07:47 PM Go to last post
  13. Analysis of Variance with replication and multiple comparisons

    Hi: Could someone please help me with the following problem? I am performing an Analysis of Variance with replication, balanced design but it is...

    Started by Ale2012‎, 04-26-2011 03:28 AM
    • Replies: 1
    • Views: 2,319
    04-26-2011, 07:30 AM Go to last post
  14. Binomial Distribution confusion

    Hi, I'm currently confused on a question and don't quite understand how to solve it. The question is Suppose 75% of all households with telephone...

    Started by Aleckandre98‎, 02-13-2017 09:30 PM
    • Replies: 1
    • Views: 1,382
    02-14-2017, 03:39 AM Go to last post
  15. Log-rank or Wilcoxon test

    I want to compare two survival curves (cumulative) and Iím not completely sure which of the two tests is most appropriated log-rank or wilcoxon test....

    Started by Aleco‎, 09-25-2013 10:24 PM
    • Replies: 2
    • Views: 2,290
    09-26-2013, 07:58 AM Go to last post
  16. Kolmogorov smirnov test for goodness of fit

    Hi, I urgently need your advise! I would need to know if I can use the Kolmogorov smirnov test for goodness of fit of distributions different...

    Started by aledanda‎, 07-31-2009 08:27 AM
    • Replies: 3
    • Views: 6,130
    08-03-2009, 04:34 PM Go to last post
  17. Help Reated Measure design!

    Hi! I have a database with different speech features (% of pauses, pauses duration and so on) extracted from the vocal responses to two tasks: ...

    Started by aledanda‎, 03-19-2010 06:28 AM
    • Replies: 2
    • Views: 2,465
    03-19-2010, 07:58 AM Go to last post
  18. classification

    Hi, I have the following problem: I have averaged the mean of pauses duration (which is a speech feature) across 4 picture that my participants...

    Started by aledanda‎, 05-26-2010 09:52 AM
    • Replies: 2
    • Views: 2,459
    05-27-2010, 04:15 AM Go to last post
  19. Interjudge agreement

    Hi All, I have the following problem. I asked 3 judges to rate the fragmentation of speech of some subjects in a study. I now need a measure...

    Started by aledanda‎, 11-09-2010 07:19 AM
    • Replies: 2
    • Views: 3,709
    11-10-2010, 05:36 AM Go to last post
  20. Repeated measure mixed models HELP PLEASE!!

    Hi to everyone! I am new to the forum! Very briefly, my problem is as follows: I started a research on videogame exposure and morality. I...

    Started by Alegabby‎, 04-23-2012 05:24 PM
    help needed, mixed models
    • Replies: 1
    • Views: 1,340
    04-24-2012, 03:18 PM Go to last post
  21. Validating and comparing models

    Hello all I am confused about how to get a measure of how well a model fits data. I have a set of failure time observations for a component....

    Started by alejandro107‎, 05-30-2009 11:07 AM
    • Replies: 0
    • Views: 1,490
    05-30-2009, 11:07 AM Go to last post
  22. Estimate of travelling time

    Hello! I'm a Norwegian engineer, now located in Tunisia. Everyday i take a sort of taxi, called collective taxi to my Arabic lessons in the neighbor...

    Started by aleks6561‎, 09-25-2010 04:48 PM
    • Replies: 12
    • Views: 4,190
    09-30-2010, 12:55 AM Go to last post
  23. How to anticipate moderating effects

    Hi. I have a large dataset and based on some or all of the variables in that dataset, I want to create a regression model using SPSS. However, it...

    Started by aleksaah‎, 05-11-2012 09:57 AM
    • Replies: 1
    • Views: 1,543
    05-11-2012, 12:54 PM Go to last post
  24. Mean comparison

    Hi everyone. I am sorry if this is too simple question, but I still cant deal with it. I have a set of data for period of time. I know that this...

    Started by Alergenic‎, 12-13-2016 04:24 AM
    • Replies: 3
    • Views: 3,012
    12-13-2016, 10:27 AM Go to last post
  25. How much high/low is the variance if a variable?

    Hello everyone, How can you determine if a variable has a high variance or not? The variance, the standard deviation and the coefficient of...

    Started by Alessandro_Italy‎, 07-17-2014 08:24 AM
    coefficient of variation, variance
    • Replies: 1
    • Views: 1,086
    07-17-2014, 11:06 AM Go to last post
  26. Test the difference between the variance of two proportions

    Hello everyone, How can I test the difference between the variance of two proportions? Best, Ale

    Started by Alessandro_Italy‎, 07-17-2014 08:44 AM
    proportion, variance
    • Replies: 3
    • Views: 1,630
    07-17-2014, 02:54 PM Go to last post
  27. Exclamation Help with the statistics solving

    Violations 0 0 1 2 3 4 5 >5 Fine A$1000 0 0 10 10 10 20 50 (Please note from the...

    Started by alestairilupul‎, 05-13-2014 01:51 AM
    assumptions, binomial distribution, expected value, probabilities, statistics business
    • Replies: 0
    • Views: 1,484
    05-13-2014, 01:51 AM Go to last post
  28. Order statistics?

    Hi all! First, I am not a statistician, so please forgive potential non-sense in the following question. Lets say we have a table of 3 subjects...

    Started by AlesTalkstats‎, 09-05-2009 04:02 AM
    • Replies: 0
    • Views: 2,146
    09-05-2009, 04:02 AM Go to last post
  29. Multilevel models help

    I am in a situation where I have an outcome variable (dichotomous) that has been measured in different centers (group variable). Here it is a...

    Started by Alex C‎, 04-09-2013 02:14 PM
    • Replies: 3
    • Views: 1,354
    04-10-2013, 04:07 PM Go to last post
  30. building confidence interval for a simulated estimate

    Hi, the context : I'm using a basic logistic regression model on my data, and the values of interest are the basic estimates : Beta regression...

    Started by Alex C‎, 06-03-2013 02:07 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 3,959
    06-06-2013, 10:46 AM Go to last post
  31. homoscedasticity assumption in linear regression

    If we have a usual linear regression model Y = beta0 + beta1*X + e If we say that e is independent of X, does this automatically imply that var(e)...

    Started by Alex C‎, 02-20-2015 09:46 AM
    • Replies: 3
    • Views: 1,313
    02-20-2015, 06:23 PM Go to last post
  32. creating a categorical variable with a continuous variable

    Hi, I have a year of birth variable that I'm regrouping into categories (for example 1970-1974 is coded as 1, 1975-1979 is coded as 2, etc). I...

    Started by Alex C‎, 12-02-2016 11:19 AM
    • Replies: 1
    • Views: 1,790
    12-02-2016, 12:26 PM Go to last post
  33. comparing linear vs logistic regression for a simple model with binary variables

    Let's suppose Y and X are two binary variables. If I do a linear regression model Y=B0 + B1*X and estimate the predicted values for Y, I will get the...

    Started by Alex C‎, 02-06-2017 04:16 PM
    • Replies: 4
    • Views: 2,402
    02-06-2017, 06:28 PM Go to last post
  34. Question about conditional odds ratio

    I have a question about the definition of a conditional odds ratio (COR). Let's assume a very simple scenario of three binary variables Y,X and Z....

    Started by Alex C‎, 10-02-2017 02:25 PM
    • Replies: 3
    • Views: 247
    10-03-2017, 12:05 PM Go to last post
  35. r squared and t stats

    I am running regression analysis of panel data examining whether there exists a relationship between aid and investment as well as between aid and...

    Started by Alex E‎, 04-27-2006 05:28 AM
    • Replies: 2
    • Views: 3,903
    04-27-2006, 11:42 AM Go to last post
  36. Very basic question regarding multiplicity

    Hi all, I'm hoping you can give me some homework help so I can better understand this question. I was asked, given a 0.05 significance level, how...

    Started by alex3483‎, 03-25-2015 06:28 PM
    • Replies: 0
    • Views: 985
    03-25-2015, 06:28 PM Go to last post
  37. identify under-performing meter / counter

    Hello All; I would be gratfull if you could help me solving a problem that I need to integrate into an automation system. The problem is: 1- I...

    Started by alex4evr‎, 01-24-2013 12:05 PM
    • Replies: 1
    • Views: 1,083
    01-26-2013, 09:32 AM Go to last post
  38. Question Not sure what topic this question falls under

    Among 30 children (aged five to six years) living in a particular neighborhood, the standard deviation of diastolic blood pressure is 7.9mm Hg and...

    Started by Alex69‎, 10-18-2011 12:26 AM
    • Replies: 2
    • Views: 1,811
    10-18-2011, 01:20 AM Go to last post
  39. Differentiating between different distributions

    In my last 3 statistics classes I have learned about several different kinds of distributions: the binomial probability distribution the normal...

    Started by Alex69‎, 10-18-2011 01:06 PM
    binomial distribution, sampling distribution
    • Replies: 0
    • Views: 1,982
    10-18-2011, 01:06 PM Go to last post
  40. Quick questions about probability and expected value

    If 22 percent of all sodas dispensed by a vending machine overflow their cups, then : a) What is the probability that exactly five out of the ten...

    Started by alex777‎, 11-01-2011 08:45 PM
    • Replies: 1
    • Views: 1,936
    11-01-2011, 11:28 PM Go to last post
  41. Couple conceptual word problems

    1. A survery of college students was taken to determine what percentage of students would be voting in the upcoming elections. The results were...

    Started by alex777‎, 10-30-2011 07:41 AM
    • Replies: 3
    • Views: 2,900
    10-30-2011, 02:23 PM Go to last post
  42. Completely Stumped by Impossible Stat Question

    The weight of ripe pumpkins grown at Mr. Mike's farm are normally distributed with a mean of 8 pounds and a standard deviation of 2 pounds. The...

    Started by alex777‎, 10-29-2011 09:38 PM
    • Replies: 2
    • Views: 3,021
    10-30-2011, 01:24 AM Go to last post
  43. Bonferroni test - ANOVA post-hoc - Formula for the standard error

    Hi all, Was doing ANOVA (1 and 2 way) and messed with post-hoc with Bonferroni correction. As I understand formula for the test statistic is ...

    Started by alex84‎, 06-09-2010 06:49 PM
    • Replies: 4
    • Views: 17,544
    06-09-2010, 07:39 PM Go to last post
  44. Statistical Test

    Hello, I have 4 sets of data, 2 sets from one individual and 2 from another. I have calculated the % difference between the two sets for each...

    Started by Alex95‎, 02-23-2013 08:58 AM
    • Replies: 2
    • Views: 1,534
    02-23-2013, 10:29 AM Go to last post
  45. Nested sampling: posterior samples randomly scattered in the area under L(x)? Why?

    Hi All, I am new to this forum, so I hope you will bear with me (and forgive mistakes etc:) I am reading on nested samples (got into it reading...

    Started by alexander.scpv‎, 10-04-2013 10:20 AM
    nested sampling, sivia, skilling
    • Replies: 0
    • Views: 1,284
    10-04-2013, 10:20 AM Go to last post
  46. Panel data correlation

    In a panel dataset of multiple years and multiple countries, what is best practice for running correlations among variables? I know that pooling by...

    Started by Alexander8‎, 03-30-2015 09:26 AM
    correlation, panel data
    • Replies: 0
    • Views: 1,011
    03-30-2015, 09:26 AM Go to last post
  47. Non-parametric method: confidence interval for the median (Wilcoxon)

    hello.I have a subject about Non-parametric method: confidence interval for the median (Wilcoxon) but i can't find any usefull information.i would...

    Started by alexandros‎, 06-17-2014 04:15 AM
    • Replies: 0
    • Views: 955
    06-17-2014, 04:15 AM Go to last post
  48. High Variance

    I am running checks for parametric assumptions, and while my data is approximately normally distributed, the variances of some of the variables is...

    Started by alexburke‎, 01-30-2011 07:34 AM
    • Replies: 0
    • Views: 2,426
    01-30-2011, 07:34 AM Go to last post
  49. Sten Scores

    Hi can anyone help me work out sten scores in spss Is it just the z score x 2 + 5.5 Thanks Alex

    Started by AlexDavda1‎, 08-09-2011 01:17 PM
    • Replies: 0
    • Views: 2,497
    08-09-2011, 01:17 PM Go to last post
  50. Exercise in Stationarity

    Hello everyone, I am Alexandra I am completely new to the forum and have no IDEA about statistics. My boyfriend is at his final semester of his...

    Started by alexdent‎, 02-22-2014 11:53 AM
    time series
    • Replies: 7
    • Views: 1,398
    02-23-2014, 11:47 AM Go to last post
  51. two continuous & two categorical variables: how to compare

    Dear all, I have the following biological data: 1st variable (continuous, normally distributed): concentration of a hormone in blood 2nd...

    Started by Alexei‎, 08-01-2016 05:05 AM
    multivariate analysis
    • Replies: 3
    • Views: 1,408
    08-02-2016, 09:21 AM Go to last post
  52. Regression analysis data distribution

    Hello colleagues, Could you please help me understand the following? I am making a linear regression analysis and my dependent variable is...

    Started by alexeymosc‎, 10-17-2013 03:01 AM
    • Replies: 8
    • Views: 2,104
    10-19-2013, 04:00 AM Go to last post
  53. LOF : Local Outlier Factor

    I have a few questions about Lof : http://www.dbs.ifi.lmu.de/Publikationen/Papers/LOF.pdf 1. I don't understand of k-distance(o) inside...

    Started by AlexeyS‎, 06-20-2016 08:38 AM
    lof, outliers
    • Replies: 0
    • Views: 1,556
    06-20-2016, 08:38 AM Go to last post
  54. Need help choosing an appropriate test.

    I have two sets of frequencies, observed and expected. I know I could do a Chi-squared test to determine if the frequency distributions match, but...

    Started by AlexG‎, 06-04-2013 10:49 AM
    • Replies: 3
    • Views: 1,071
    06-04-2013, 05:20 PM Go to last post
  55. Pearson correlation coefficient P-value statistic?

    Original question: How was the P-value for the Pearson correlation coefficient calculated? What is the number of degrees of freedom of the test...

    Started by alexgoh‎, 12-19-2010 01:50 PM
    • Replies: 1
    • Views: 9,517
    12-19-2010, 01:55 PM Go to last post
  56. Help with Anova interpretation

    Hi Guys This is probably simple but I cannot see it. The question is asking how do I determine the number of levels in the anova. Attached is...

    Started by alexi82‎, 10-14-2017 08:12 PM
    • Replies: 2
    • Views: 175
    10-14-2017, 08:20 PM Go to last post
  57. Bland-Altman plot interpretation

    Good afternoon, I am trying to compare humidity levels taken with our old hygrometers vs. our new one. I did some research over the internet,...

    Started by alexiab‎, 02-16-2017 09:06 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 5,121
    03-11-2017, 01:20 PM Go to last post
  58. When/ when not to use Z scores to compare data

    In comparing 2 groups of numbers, could you give me any examples of when would it be (1) beneficial (2) when it would not be beneficial to first...

    Started by alexis2‎, 12-12-2010 01:28 PM
    • Replies: 4
    • Views: 8,401
    12-12-2010, 06:10 PM Go to last post
  59. What does an outlier in a stem and leaf plot look like?

    I have to analyze some displays (e.g. stem and leaf plot, histogram) I have generated for a homework questions from a group of numbers. I have...

    Started by alexis2‎, 12-12-2010 01:39 PM
    • Replies: 6
    • Views: 43,655
    12-12-2010, 04:06 PM Go to last post
  60. Determining whether a study is randomized

    I would appreciate any tips on how to tell whether a study is randomized or not.

    Started by alexis2‎, 12-19-2010 02:35 AM
    • Replies: 1
    • Views: 2,429
    12-19-2010, 06:12 AM Go to last post

+ Post New Thread
Page 9 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 27 28 59 109 ... 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