1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    2,826
+ Post New Thread
Page 13 of 295 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 29 30 31 32 63 113 ... LastLast
Threads 721 to 780 of 17649

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: 200,352
    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: 68,570
    09-30-2005, 09:44 AM Go to last post
  1. What kind of test should I use?

    I have 50 test items for 1000 students, each student answered 30 of them. I would like to find out whether the rate of correctness of items is...

    Started by pancy‎, 11-25-2016 12:11 AM
    t-test
    • Replies: 3
    • Views: 2,433
    11-28-2016, 03:13 AM Go to last post
  2. Compute variables? Number of births by year

    Hello - I am working through a university statistics course without prior knowledge of statistics, so I apologize if the description of my question...

    Started by shirinjune‎, 11-27-2016 06:14 AM
    compute variables
    • Replies: 0
    • Views: 1,637
    11-27-2016, 06:14 AM Go to last post
  3. regression/correlation for classified data

    Hi, I have classified data regarding income. Besides, I have a 7-point Likert scale where people express their favor toward mobility management...

    Started by blazey‎, 11-26-2016 09:57 AM
    • Replies: 0
    • Views: 1,720
    11-26-2016, 09:57 AM Go to last post
  4. how can I calculate the percentage

    Hello, I have been trying to search how to calculate the best percentage of wastage that its acceptable, and still get high Sale values by using...

    Started by brexlin‎, 11-26-2016 01:59 AM
    • Replies: 0
    • Views: 1,633
    11-26-2016, 01:59 AM Go to last post
  5. Random survival forests

    Would like to hear if any one has used this method for survival analysis. How does it compare with COX models while building a model with several...

    Started by LathaKadalayil‎, 11-16-2016 11:37 AM
    • Replies: 4
    • Views: 2,874
    11-25-2016, 08:29 PM Go to last post
  6. Regression coefficient for interaction

    Hi! I have a homework question that on the face looks rather simple to me, but I want to check with people who may have greater statistics...

    Started by smashing‎, 11-22-2016 06:08 PM
    • Replies: 2
    • Views: 1,465
    11-25-2016, 04:58 PM Go to last post
  7. Post Voter Engagement Methodology

    I need some help with measuring voter engagement among native and naturalized citizens depending on their respective race. dependent variable/s:...

    Started by Boxer007‎, 11-24-2016 01:54 PM
    • Replies: 1
    • Views: 1,888
    11-25-2016, 06:35 AM Go to last post
  8. Wink Comparing the intercept and the estimate coefficient in time-series regression

    Hi there. I'm still a bit of a novice, and I'm wondering if anyone could advice me if this is empirically "responsible"? So essentially I've...

    Started by Michael54321‎, 11-24-2016 11:46 AM
    • Replies: 0
    • Views: 2,210
    11-24-2016, 11:46 AM Go to last post
  9. Sample Size Calculation/power calcuation for retrospective study

    Hi all, I recently completed a study looking at hospital records over a 5 year period (fixed population of participants based on study period)....

    Started by Damo123‎, 11-24-2016 10:04 AM
    power calculation, retrospective study, sample size
    • Replies: 0
    • Views: 1,723
    11-24-2016, 10:04 AM Go to last post
  10. Assignment

    Can someone help on this? A statistics professor gave three quizzes leading up to the first test in his class. The quiz grades and test grade for...

    Started by J_Stats‎, 11-24-2016 06:41 AM
    • Replies: 0
    • Views: 2,556
    11-24-2016, 06:41 AM Go to last post
  11. Meta-analysis - mean (target mean correction)

    I had a statistical question which I'll mention here if you have time to have a look at it then I'd be very grateful for your thoughts. Im...

    Started by Jack Florence‎, 11-23-2016 06:24 PM
    • Replies: 1
    • Views: 2,283
    11-23-2016, 10:42 PM Go to last post
  12. t-test for large sample size - bike hire data

    Hello everyone, I'm taking a graduate-level statistics course at the University of Glasgow which includes a methods assignment. The assignment...

    Started by bikingman‎, 11-22-2016 03:06 PM
    t-test, t-test two-sample
    • Replies: 2
    • Views: 2,499
    11-22-2016, 06:13 PM Go to last post
  13. Technical efficiency

    Hello to everyone , i'm new in this forum , i would like to know if there is a relationship between the coefficient and the std in the calculation of...

    Started by danilo93‎, 11-22-2016 12:27 PM
    • Replies: 2
    • Views: 1,249
    11-22-2016, 06:02 PM Go to last post
  14. Identifying Effect size in Power Analysis

    I have a set of data for a water quality parameter on which is used to compute Rank Spearman Trend. I am interested to know whether the number of...

    Started by rajabadsha‎, 11-21-2016 08:05 AM
    • Replies: 5
    • Views: 2,813
    11-22-2016, 10:06 AM Go to last post
  15. lottery question

    Connecticut has a lottery game called Cash5. There are 35 numbers to choose from. You have to select 5 numbers. 5 numbers are then drawn...

    Started by tdx‎, 11-22-2016 07:42 AM
    • Replies: 1
    • Views: 1,572
    11-22-2016, 08:16 AM Go to last post
  16. SEM / path model = visualization of a hierarchical regression?

    Hi everybody, nice to have found such a useful forum! And I hope someone can help me with my statistical problem! I have the following...

    Started by Klaus die Maus‎, 11-10-2016 11:27 PM
    • Replies: 3
    • Views: 1,708
    11-22-2016, 06:55 AM Go to last post
  17. Bootstrap procedure to test difference between correlation coefficients

    Hi everyone, I have two correlation coefficients (r1 and r2), obtained within the same sample (20 subjects). My aim is to test it they are...

    Started by smndpln‎, 11-16-2016 05:03 AM
    bootstrap, correlation, neuroscience, resampling, t-test two-sample
    • Replies: 5
    • Views: 2,372
    11-22-2016, 05:07 AM Go to last post
  18. Significant Difference between Students' Evaluation and Teachers' Evaluation

    Good day! I am working with a research paper regarding the significant difference between the students' evaluation and teachers' evaluation in...

    Started by nash0612‎, 11-22-2016 01:52 AM
    • Replies: 1
    • Views: 1,297
    11-22-2016, 03:25 AM Go to last post
  19. Trying to find the root cause of a communication issue.

    Good Morning.. I have four host computers which hold a variety of virtual servers. We are seeing intermittent communication slowness when performing...

    Started by dherde‎, 11-21-2016 01:09 PM
    • Replies: 0
    • Views: 1,766
    11-21-2016, 01:09 PM Go to last post
  20. Which statistical test to use?

    In my study I have two study groups: Group A is composed of X subjects which are either males or females, and every subject is characterized by...

    Started by sylnyapi‎, 11-21-2016 08:41 AM
    • Replies: 2
    • Views: 1,601
    11-21-2016, 11:11 AM Go to last post
  21. p-value and hypothesis testing

    Hi, I've one question concerning the p-value. I've run a regression in STATA with one independent variable (x1) with a small positive coefficient and...

    Started by frankys‎, 11-20-2016 05:01 PM
    • Replies: 3
    • Views: 1,524
    11-21-2016, 09:05 AM Go to last post
  22. Recalculate ratings

    Hi. I wish to compare 3 products that have the follwing scores 1) 86/100 I.e 0.86 from 1200 ratings 2) 78/100 from 100 ratings 3) 81/100 from...

    Started by shaju304‎, 11-20-2016 04:06 AM
    • Replies: 0
    • Views: 1,815
    11-20-2016, 04:06 AM Go to last post
  23. Anova Repeated Measures to compare three different variables?

    In a psychology research (not published yet) an Anova Repeated Measures test was used to compare three different variables measured (at the same...

    Started by flegmatiq‎, 11-20-2016 02:04 AM
    anova repeated measures
    • Replies: 0
    • Views: 1,077
    11-20-2016, 02:04 AM Go to last post
  24. Sensitivity/Specificity of a Test Procedure Question

    Hi everyone, I'm a bit unsure on how to do this problem. It's mainly about sensivity, specificity, and probability. I'm especially confused about...

    Started by Mewtwo‎, 11-20-2016 12:55 AM
    • Replies: 0
    • Views: 1,266
    11-20-2016, 12:55 AM Go to last post
  25. Conditional expectation

    I have been given a expected value of conditional expression. I have to show that the expression is equal to the term on the right side. How do I get...

    Started by trulshalvor‎, 11-19-2016 12:01 PM
    • Replies: 0
    • Views: 1,612
    11-19-2016, 12:01 PM Go to last post
  26. Parametric vs nonparametric tests

    I'm pretty confused about the conditions in which I should use a parametric or a nonparametric test to compare the means of 2 (or more) populations...

    Started by david030177‎, 11-17-2016 05:10 PM
    nonparametric tests, parametric test
    • Replies: 7
    • Views: 3,021
    11-19-2016, 02:03 AM Go to last post
  27. Population specific odds ratio and subject specific odds ratio

    Hey guys, For a school assignment I have to compute the population specific odds ratio and the subject specific odds ratio from the table below. ...

    Started by Iris Ilja‎, 11-15-2016 07:33 AM
    categorial analysis, odds ratio
    • Replies: 5
    • Views: 1,572
    11-17-2016, 12:21 PM Go to last post
  28. Question Sample Data Provided! Ranking Content Performance in Email Sends

    Hello! I have searched the forum, but my question is so specific and I know so little I cannot identify threads that would answer my question. ...

    Started by SamParsons‎, 11-14-2016 10:02 PM
    email, ranking, statistics, technology
    • Replies: 1
    • Views: 1,249
    11-16-2016, 11:44 PM Go to last post
  29. Which SD to use for calculating minimal detectable change values?

    I am hoping for some assistance with understanding the correct SD to use for the calculation of minimal detectable change scores. I have the...

    Started by LeeRC‎, 11-15-2016 07:53 PM
    mdc, minimal detectable change
    • Replies: 0
    • Views: 1,724
    11-15-2016, 07:53 PM Go to last post
  30. Categorical Data Analysis: log linear analysis

    Hey guys, I'm very new to statistics so I have a question: Consider gender (G), neuroticism (N), openness (O), major depression (MDD), and...

    Started by Iris Ilja‎, 11-15-2016 07:22 AM
    categorial analysis, log linear, simple
    • Replies: 0
    • Views: 1,663
    11-15-2016, 07:22 AM Go to last post
  31. Dice problem help

    I'm trying to get this problem set up correctly but I seem to have an issue as my calculated standard deviation seems to be off. Anyone have any...

    Started by Cerran‎, 11-13-2016 10:40 PM
    • Replies: 7
    • Views: 2,133
    11-14-2016, 02:51 PM Go to last post
  32. [STATA - gsem] Multilevel Structural Equation Model - Meta Analysis

    Hello, I am quite familiar with mixed effects (multilevel models) in meta analyses. Now, I want to do a mixed effects (multilevel) meta...

    Started by Bavarian‎, 11-12-2016 07:26 AM
    meta-analysis, sem, stata
    • Replies: 1
    • Views: 1,394
    11-13-2016, 05:07 PM Go to last post
  33. Which analysis for a survey question asking how frequently a group do an activity ?

    I surveyed a group of photographers and asked them how frequently they used a particular type of lens for a specific type of photograph. I now want...

    Started by clivegibbs‎, 11-13-2016 12:43 PM
    friedman test, survey, wilcoxon signed-rank test
    • Replies: 0
    • Views: 1,313
    11-13-2016, 12:43 PM Go to last post
  34. Importing excel sheets using macro statment

    I need to complete an four tasks as follows: There are 3 Excel files, DATAFILE1.XLS, DATAFILE2.XLS and DATAFILE3.XLS Copy these files into the...

    Started by Gpepsicola‎, 11-13-2016 12:55 AM
    • Replies: 0
    • Views: 1,999
    11-13-2016, 12:55 AM Go to last post
  35. Am I choosing the right test?

    My daughter is doing a science fair project testing the efficacy of insect repellants. She has 3 trials each for 3 repellants and 1 control. In...

    Started by ironrabbit‎, 11-11-2016 07:02 PM
    • Replies: 1
    • Views: 1,657
    11-11-2016, 11:03 PM Go to last post
  36. Post Rejecting or not rejecting the null hypothesis.

    A city council is considering drafting legislation related to the exclusion of renters with children. Since implementation will be expensive, they...

    Started by ab541393‎, 11-11-2016 09:45 AM
    statistics help
    • Replies: 1
    • Views: 4,601
    11-11-2016, 01:22 PM Go to last post
  37. Sufficiency - Help solve a very basic problem

    Hello everyone, I have just started a course in statistical inference a t the university. I have a very basic problem which I'm struggling to...

    Started by Interstellar1‎, 11-10-2016 05:18 PM
    • Replies: 0
    • Views: 1,242
    11-10-2016, 05:18 PM Go to last post
  38. Finding the p value

    I am taking a statistics class, and i have some problems Understanding a formula. The formula in question is like this: ...

    Started by bok11‎, 11-10-2016 09:37 AM
    p-value
    • Replies: 12
    • Views: 2,007
    11-10-2016, 12:30 PM Go to last post
  39. How to interpret the results of an autocorrelation test in SPSS?

    Hello everyone, I've been asked to find the serial correlation of BP stock yields and I've managed to get the results pictured below. ...

    Started by finstats99‎, 11-08-2016 11:23 AM
    • Replies: 0
    • Views: 2,018
    11-08-2016, 11:23 AM Go to last post
  40. Most appropriate analysis for my experiment

    Hi all, I'm a newbie to biostatistics and I'm trying to figure out how to set the statistical part of my final project. I'm a dentistry student and...

    Started by Deepchamfer‎, 11-08-2016 06:23 AM
    • Replies: 0
    • Views: 937
    11-08-2016, 06:23 AM Go to last post
  41. PCA analysis - identifying extremes of each factor

    I am analysing the size and shape of a particular population of people using 25 different body measurements. I completed a PCA/factor analysis in...

    Started by NathanD‎, 11-07-2016 10:08 PM
    • Replies: 0
    • Views: 1,361
    11-07-2016, 10:08 PM Go to last post
  42. Limited multiple response data - analysis and sample size calculation

    Hello all, I am a relative novice at statistics and have run into a problem working out how to analyse some data I will hopefully soon be...

    Started by JDRH‎, 11-03-2016 08:20 AM
    multiple response, survey, survey analysis
    • Replies: 2
    • Views: 1,220
    11-07-2016, 03:15 PM Go to last post
  43. Gaussian Copula

    Hey everyone! I have a homework in which I have to fit a certain gumbel copula and, in another task, a Gaussian copula on historical data and...

    Started by MiUSA‎, 11-07-2016 02:45 PM
    • Replies: 0
    • Views: 1,503
    11-07-2016, 02:45 PM Go to last post
  44. Standard Deviations in Normal Distributions

    I have a homework question that is as follows. In a normal distribution, how many standard deviations above the mean is Q3? I know that Q3 is...

    Started by jjk1503‎, 11-06-2016 02:06 PM
    • Replies: 0
    • Views: 2,261
    11-06-2016, 02:06 PM Go to last post
  45. Question [Conjoint Analysis] Measuring (cognitive) cost functions instead of value functions?

    Hello :wave:, usually one uses Conjoint Analysis, like in my case ACBC (Adaptive Choice Based Conjoint) in order to measure preferences and...

    Started by Conjoint Chirs‎, 11-06-2016 04:58 AM
    cbc / acbc, conjoint, conjoint analysis, consumer test, cost estimation
    • Replies: 0
    • Views: 1,614
    11-06-2016, 04:58 AM Go to last post
  46. Normal Probability Plot

    3 questions 1) A perfect Normal distribution displays as a straight line of data points. Right or left skewed display skewness of course. I have a...

    Started by Koloski‎, 11-02-2016 09:42 AM
    • Replies: 2
    • Views: 1,628
    11-05-2016, 06:49 AM Go to last post
  47. E maximal error

    To use e maximal error must one have np > 5 and nq > 5

    Started by Shc‎, 11-04-2016 01:09 PM
    • Replies: 2
    • Views: 782
    11-04-2016, 10:57 PM Go to last post
  48. Definition of small sample

    Is it less than thirty

    Started by Shc‎, 11-04-2016 01:04 PM
    • Replies: 1
    • Views: 1,469
    11-04-2016, 04:00 PM Go to last post
  49. Exclamation Indepedent or paired t-test?

    If you are comparing the number of barnacles (% cover) on two different sides of rock which test would you take?

    Started by katiewarren7‎, 11-03-2016 08:24 AM
    • Replies: 5
    • Views: 1,782
    11-03-2016, 03:05 PM Go to last post
  50. How to choose a method for monitoring delayed statistics in a market?

    Hi there. First time poster, and Statistical newbie. I am trying to wrap my head around an idea for monitoring monthly real estate data. Here is...

    Started by hoffman81‎, 11-03-2016 06:46 AM
    • Replies: 0
    • Views: 1,022
    11-03-2016, 06:46 AM Go to last post
  51. Mixed ANOVA and non-normally distributed data

    Dear all, I have an experiment with three groups of subjects (i.e., three conditions) while each group was tested twice (see attachment; each dot...

    Started by vadim‎, 11-01-2016 02:47 PM
    • Replies: 5
    • Views: 1,847
    11-03-2016, 04:39 AM Go to last post
  52. Post Comparing time lag between two data sets

    Hi, I am trying to compare two data sets available for x number of historical months. These are two different types of claims, i.e. first party...

    Started by Owais‎, 11-02-2016 06:06 PM
    correlation analysis, statistic
    • Replies: 0
    • Views: 1,806
    11-02-2016, 06:06 PM Go to last post
  53. single sample or multiple samples?

    Let's say I run an experiment where I want to measure reaction times to some stimuli. The experiment consists of 100 trials. I collect data from...

    Started by fffrost‎, 10-30-2016 04:44 PM
    • Replies: 7
    • Views: 1,539
    11-01-2016, 11:35 AM Go to last post
  54. Sources about setting up a retrospective cohort study

    Hello, I'm writing a master paper in biomedical sciences that involves doing a retrospective cohort study on a database of soft tissue tumor...

    Started by Klaasde‎, 11-01-2016 09:58 AM
    • Replies: 0
    • Views: 806
    11-01-2016, 09:58 AM Go to last post
  55. Post Marketing Data Analysis

    Looking for some insights if possible from fellow posters. Recently encountered this assignment and I am having trouble diving into it. It seems...

    Started by Auboy‎, 11-01-2016 09:53 AM
    • Replies: 0
    • Views: 1,303
    11-01-2016, 09:53 AM Go to last post
  56. comparing coefficient of variation for multiple samples

    I have three sets of data sets each 10 to 20 data points. I want to test if the coefficient of variation is the same across all the sets. Please...

    Started by zerohour‎, 10-31-2016 07:25 PM
    coefficient of variation, inferential statistics
    • Replies: 0
    • Views: 1,254
    10-31-2016, 07:25 PM Go to last post
  57. Pearson vs. Spearman: negative and positive values

    Hey everyone, thanks for having and helping me :). I calculated both Pearson and Spearman correlation coefficients on time series data of weekly...

    Started by MiUSA‎, 10-31-2016 06:01 AM
    • Replies: 5
    • Views: 3,883
    10-31-2016, 12:20 PM Go to last post
  58. Which of multiple variables is most significant for a set outcome?

    Hello, I'm working on a project where there is a set outcome (a person undergoes a certain medical test), and I have several independent variables...

    Started by ebliss2000‎, 10-30-2016 05:18 PM
    • Replies: 1
    • Views: 1,613
    10-30-2016, 07:55 PM Go to last post
  59. How to compare increase in price from different samples?

    I have data samples of home sales of N different cities, and I want to find the city with the biggest increase in average prices between 2012 and...

    Started by e_man64‎, 10-28-2016 08:47 AM
    data analysis, percentage change, weighted mean
    • Replies: 3
    • Views: 1,307
    10-30-2016, 06:10 PM Go to last post
  60. Probability question

    You rolRemoved Removed RemovedRemivedRemovedRemoved

    Started by Testing‎, 10-29-2016 09:55 PM
    • Replies: 5
    • Views: 2,155
    10-30-2016, 09:50 AM Go to last post

+ Post New Thread
Page 13 of 295 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 29 30 31 32 63 113 ... 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