1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    1,901
+ Post New Thread
Page 6 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 56 106 ... LastLast
Threads 301 to 360 of 17594

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: 197,148
    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: 66,943
    09-30-2005, 09:44 AM Go to last post
  1. Confidence interval ratio of variances

    Hi guys..I simply don't know where to start and my book isn't helpful at all (it doesn't mention this)....please help! A study was undertaken to...

    Started by blackjesus13‎, 10-29-2008 06:25 PM
    • Replies: 12
    • Views: 9,684
    10-30-2008, 01:25 PM Go to last post
  2. Seeking feedback on a data visualization app

    For the past year I've been assisting with the development of a data visualization application. It is in many ways experimental. My role is mostly in...

    Started by Wornways‎, 05-29-2009 12:51 AM
    • Replies: 12
    • Views: 4,442
    11-01-2010, 12:42 AM Go to last post
  3. analysis for testing improvement size across 2 groups

    I would love input regarding what analysis to use Design: IV: 1 between subjects group (sought assistance, no assistance sought) DV: ...

    Started by lang‎, 06-16-2009 04:03 PM
    • Replies: 12
    • Views: 4,185
    06-17-2009, 10:29 AM Go to last post
  4. Hypothesis testing with multinomial distributions

    If you throw a die and record the outcomes, you can test if the die is 'fair' with a chi-test. But how can you use the same data to determine with a...

    Started by Xeranox‎, 01-06-2010 06:10 AM
    • Replies: 12
    • Views: 13,030
    01-07-2010, 04:48 PM Go to last post
  5. Question Margin of Error - Confidence Level

    I sent out a questionnaire to hundreds of people and recieved 154 responses. Some of the questions have a yes/no answer. So for one of them I...

    Started by psrs0810‎, 09-01-2010 01:54 PM
    • Replies: 12
    • Views: 6,330
    09-02-2010, 03:51 PM Go to last post
  6. More than just stat

    I'm in my first stat class, and I am lost with the practice problems for the first test. They seem to have nothing to do with stat, but use algebra...

    Started by lilfish08‎, 09-14-2010 07:14 PM
    • Replies: 12
    • Views: 5,600
    09-15-2010, 01:06 PM Go to last post
  7. 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: 4,182
    09-30-2010, 12:55 AM Go to last post
  8. Doubt on Experimental study

    Hi I need to conduct an experimental study. The objective is to find the effectiveness of a particular teaching method on pupils. I carried out...

    Started by rockyallen7771‎, 01-20-2011 04:30 AM
    • Replies: 12
    • Views: 2,865
    01-24-2011, 09:42 AM Go to last post
  9. Stats noob needs help using SPSS! Compensation for ~1hour

    Hi, I have collected some data on a study about income inequality, social mobility, and life satisfaction. My deadline is very very soon and I'm a...

    Started by hessenface‎, 08-24-2011 09:48 AM
    spss
    • Replies: 12
    • Views: 4,609
    08-24-2011, 07:34 PM Go to last post
  10. 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: 7,211
    09-15-2011, 06:16 AM Go to last post
  11. How can I do multi column sort?

    Suppose I've a table with multiple columns like this for applicants for a job Applicant name || Degree in Computer || salary John ...

    Started by zornado‎, 09-13-2011 07:50 PM
    • Replies: 12
    • Views: 4,025
    09-17-2011, 02:35 AM Go to last post
  12. [SOLVED] Comparing beta weights

    I'm comparing beta weights for 2 different models and I remember a formula that looks like this: for two groups: A = teacher B = student ...

    Started by trinker‎, 12-10-2011 07:55 PM
    • Replies: 12
    • Views: 6,736
    12-11-2011, 01:08 PM Go to last post
  13. Excel 2007 t-test

    I am trying to do a t-test for two samples. The question asks me compare the mean salary of sample1 and sample2. I know how to do a t-test in excel...

    Started by newbiestats‎, 10-12-2011 08:01 PM
    • Replies: 12
    • Views: 7,466
    10-14-2011, 09:27 PM Go to last post
  14. Pearson's or Spearman's?

    I've plotted a scatterplot of rock pool length against limpet frequency, and I have to look for a correlation. The data is fairly widely scattered,...

    Started by Lightf00t‎, 11-30-2011 02:18 PM
    • Replies: 12
    • Views: 12,596
    02-01-2013, 02:23 PM Go to last post
  15. Using the distribution function method to obtain the of density 1-e^-x

    Use the distribution function method to obtain the density of 1-e^-x when X has exponential distribution with Beta=1 This is the problem word for...

    Started by KZ_EE‎, 12-15-2011 12:38 PM
    • Replies: 12
    • Views: 2,668
    12-16-2011, 12:30 PM Go to last post
  16. How to calculate P-value in this context?

    A pupil can recite 30 words out of 100 wordlist (30%). After practice, he can recite 35 out of 110 wordlist (31%). If this is normal distribution, is...

    Started by learner11‎, 01-03-2012 08:31 AM
    statistica
    • Replies: 12
    • Views: 7,156
    01-08-2012, 10:19 AM Go to last post
  17. Regression diagnostics with large sample sizes

    I've started on the diagnostics with the help of the ucla website. My sample size is 1000. I ran 'proc insight data' as a first step and the...

    Started by StatsClue‎, 01-06-2012 07:40 PM
    • Replies: 12
    • Views: 4,348
    01-07-2012, 03:20 AM Go to last post
  18. Help with interpretation/check I've approached the situation correctly!

    Hey. I was wondering whether anyone would be able to check over my stats to ensure i'm doing the right thing with my data, and also help with the...

    Started by ColdWar_Kid‎, 02-04-2012 06:36 PM
    • Replies: 12
    • Views: 2,758
    02-05-2012, 08:32 AM Go to last post
  19. Collapsing categories with SAS

    I have a discrete variable: "NUMBER OF TIMES ..." It's frequency distribution is somewhat like this: 0 times=45 1 time=29 2 times=100 3...

    Started by StatsClue‎, 02-22-2012 02:01 PM
    • Replies: 12
    • Views: 5,907
    02-22-2012, 10:46 PM Go to last post
  20. Lightbulb Unusual Results - Please shed some light

    I have a large number of regression outputs. In the main one IV, a moderator and the IV*mod. In about 8 regressions I am seeing a significant...

    Started by richieboy‎, 03-16-2012 09:34 AM
    • Replies: 12
    • Views: 3,459
    03-28-2012, 08:45 AM Go to last post
  21. 4 unbalanced groups. Bonferroni/Tukey with proc glm okay to compare means?

    The data is right skewed (all groups). Need to compare means. 3 groups have 300 observations each but the 4th group has only 100. Will a proc glm...

    Started by StatsClue‎, 03-27-2012 05:03 PM
    • Replies: 12
    • Views: 4,297
    03-31-2012, 04:37 PM Go to last post
  22. help with Homework

    can anyone help me with this? I think I use a T-test? A study was conducted to explore the nature and prevalence of peer victimisation and...

    Started by tippiekatie‎, 03-28-2012 05:09 PM
    • Replies: 12
    • Views: 3,644
    03-29-2012, 12:16 AM Go to last post
  23. t-test or mann-whitney

    I have 2 sets of data. Hospital stay duration (days) for a particular illness. Hospital 1: 21, 10, 32, 60, 8, 44, 29, 5, 13, 26, 33 Hospital 2:...

    Started by nigellscott‎, 07-09-2012 03:03 PM
    • Replies: 12
    • Views: 8,166
    07-09-2012, 07:52 PM Go to last post
  24. Question One-way anova, but with 2 IVs

    Hi everyone, I'm doing my thesis for Uni this year and have a question about anova! In a nutshell - I have 2 IVs with 2 levels each. The first...

    Started by shellz‎, 07-26-2012 08:49 AM
    • Replies: 12
    • Views: 4,221
    08-01-2012, 07:27 PM Go to last post
  25. Really stuck on what test!

    Hi all! I have conducted Spearman rank test to find if there is a relationship between two variables, the two variables being perceived stress and...

    Started by Pippy‎, 08-20-2012 01:53 PM
    • Replies: 12
    • Views: 3,069
    08-21-2012, 05:33 AM Go to last post
  26. Please Help - How Do I Prove Hypothesis?

    Hi, I am in 6th grade, trying to do an analysis of data for a science fair project. Sorry, but I am only at Algebra 1, I do not have any...

    Started by Sci‎, 10-15-2012 10:40 AM
    anova, help please, null hypothesis, prove data
    • Replies: 12
    • Views: 3,066
    10-15-2012, 06:50 PM Go to last post
  27. chi square test for binary valued data

    Hi all, I am trying to implement an algorithm using a programming environment. What I am asking is how can use chi square test for binary type...

    Started by genclik27‎, 05-03-2013 07:52 AM
    • Replies: 12
    • Views: 4,843
    05-28-2013, 05:49 PM Go to last post
  28. What test to use?

    Let's say you are testing the affect of two things, A and B, on study subjects. One group of subjects is assigned to A, and the other is assigned to...

    Started by agp‎, 01-03-2013 01:35 PM
    • Replies: 12
    • Views: 2,395
    01-04-2013, 04:00 PM Go to last post
  29. Thumbs up Validating the measurement method used in a study

    Hello all ! I'm doing my first study on my master degree level. I have designed a new measuring method. I should probably validate this...

    Started by Colo-manjaro‎, 06-10-2013 02:15 PM
    • Replies: 12
    • Views: 2,279
    06-13-2013, 01:19 PM Go to last post
  30. standard error of measurement

    Hello I am not a stats expert and I need you help with calculating the standard error of each sample within a collection. For example: Let's...

    Started by DrBorrow‎, 06-07-2013 02:42 PM
    • Replies: 12
    • Views: 2,485
    06-10-2013, 12:51 AM Go to last post
  31. Probability from Mean and Standard Deviation - Please help?

    I've been working on this question all day trying to get my head around it and I just can't. I kind of understand it but get confused halfway, on all...

    Started by smd1994‎, 07-28-2013 09:02 AM
    • Replies: 12
    • Views: 4,457
    07-30-2013, 01:26 PM Go to last post
  32. Random Sampling Over time to make one random sample?

    Hello everyone. I have an interesting question that was brought to me by a friend and I do not know the "correct" way to do it. Okay so basically,...

    Started by Anotherdream‎, 08-26-2013 06:23 PM
    • Replies: 12
    • Views: 2,915
    08-30-2013, 12:42 PM Go to last post
  33. [help] jackknife estimater how do i calculate ?

    how do we calculate jackknife estimater of v(x)= p(1-p) and show that it is unbiased i dont know steps of jackknife estimater calculater but i...

    Started by numerospy‎, 11-24-2013 10:30 PM
    • Replies: 12
    • Views: 2,633
    11-27-2013, 12:41 AM Go to last post
  34. paired t-test or linear regression?

    Hello, I am applying for an IRB to evaluate the effect of lidocaine (local anesthetic) dilution on pain and duration of intradermal anesthesia. ...

    Started by randallgunther‎, 03-17-2014 11:14 AM
    • Replies: 12
    • Views: 3,015
    03-19-2014, 06:45 AM Go to last post
  35. When is data 'nearly normal' - enough to break parametric rules

    Hi everyone, I am a student who has carried out a renewable energy experiment for a dissertation project. My dependent variable is total biogas...

    Started by statsnooby‎, 05-05-2014 05:56 PM
    • Replies: 12
    • Views: 4,101
    05-06-2014, 11:49 AM Go to last post
  36. Very urgent help (not sure how to approach a one-tailed problem)

    Hi guys, I am currently writing my thesis, and I am running out of time here. I keep getting stuck constantly in different parts of the thesis,...

    Started by FastTimes‎, 05-15-2014 05:52 PM
    • Replies: 12
    • Views: 1,784
    05-16-2014, 07:01 AM Go to last post
  37. Logistic Regression

    Could someone explain the basics of logistic regression? Thank you!

    Started by amishrifle‎, 06-04-2014 05:32 PM
    logistic, regression
    • Replies: 12
    • Views: 3,120
    06-06-2014, 05:01 AM Go to last post
  38. GUYS!! Last exercise for GRADUATION!!! EMERGENCY!!!

    Hey guys! I am a Arxelaos, I am about to graduate from BA and have only one course to go: STATISTICS!!! So, m gonna need your help with one exercise!...

    Started by Arxelaos‎, 06-10-2014 12:18 PM
    • Replies: 12
    • Views: 2,455
    06-11-2014, 02:21 PM Go to last post
  39. significant p-value?

    hello I am writing an essay, and I got an r value of 0.1018 at the data I am looking at. the sample size is 13 regions of a country. would this...

    Started by abatementyogin‎, 06-11-2014 03:59 AM
    • Replies: 12
    • Views: 3,315
    06-14-2014, 02:13 AM Go to last post
  40. Mann-Whitney U Test: Ordinal data with few categories

    Hello, I am trying to use the Mann-Whitney U Test to compare ordinal data between 2 groups, but the problem is that there are only 3 categories...

    Started by jwoo94‎, 06-30-2014 02:28 PM
    mann-whitney, ordinal data
    • Replies: 12
    • Views: 3,838
    07-02-2014, 10:03 PM Go to last post
  41. Correlation help

    I have a report on correlation due soon and am looking for help as Math is not my forte. I am attempting to find the correlation between Marathon...

    Started by Yaro567‎, 07-12-2014 02:13 PM
    • Replies: 12
    • Views: 2,591
    07-12-2014, 09:50 PM Go to last post
  42. New to Statistics - PLEASE HELP ASAP!!!

    :confused: I recently began this much dreaded course. I am having a difficult time grasping the concepts. I have an exam on Monday September 26,...

    Started by Rugrats3‎, 09-22-2005 10:34 AM
    • Replies: 11
    • Views: 6,228
    10-08-2005, 06:15 AM Go to last post
  43. Misapplication of Hypothesis Testing?

    I was asked the following question and would like to hear your view: "In the year 2005 National exam, 57.4% of the students who sat for the...

    Started by mutnauk05‎, 11-30-2005 04:37 AM
    • Replies: 11
    • Views: 4,061
    12-01-2005, 09:15 PM Go to last post
  44. Variance/Normal Distributions

    I am currently in a psych tests and measurements class. I have a couple of questions that I can't figure out or find in the book. They are multiple...

    Started by shae13v‎, 01-26-2006 10:04 AM
    • Replies: 11
    • Views: 5,210
    05-09-2007, 10:38 AM Go to last post
  45. Question Very very weird observation...

    :confused: I have a group of data of size 15,000. The variance is 2.7950. I plot the histogram of them and it looks really quite Gaussian (Gaussian,...

    Started by kazec‎, 11-12-2007 03:59 AM
    • Replies: 11
    • Views: 4,169
    11-19-2007, 10:07 PM Go to last post
  46. z score

    Is Z score something like, you convert some other types of distribution like J distribution, reversed J distribution to normal distribution ( with...

    Started by sangfroid‎, 02-27-2008 11:20 AM
    • Replies: 11
    • Views: 6,664
    03-01-2008, 02:05 PM Go to last post
  47. Unhappy Need to calculate percentile score

    I need help from one of you guru's. I have 8 statements that i ask, that are to be rated from 1 to 5 each. so, the lowest score is 8 and the highest...

    Started by Freud52‎, 03-04-2008 12:19 PM
    • Replies: 11
    • Views: 8,055
    03-04-2008, 04:39 PM Go to last post
  48. Red face Proving for Sums of Random Variables

    hi, i was wondering if any1 could help me understand a few things on sums of random variables? If any1 could help me out with this question...

    Started by coconutcrabz54‎, 05-08-2008 05:37 AM
    • Replies: 11
    • Views: 3,730
    05-08-2008, 11:04 PM Go to last post
  49. p-values from Monte-Carlo

    I have data from two different groups and they both have 19 subjects. I find a statistical measure for the two groups and claim that one is greater...

    Started by andru4u‎, 05-20-2008 04:34 PM
    • Replies: 11
    • Views: 3,716
    05-21-2008, 06:42 PM Go to last post
  50. Stat Problems Help (Homework)

    1. A study in the journal of the American Medical Association examined people to see if they showed any signs of IRS (insulin resistance syndrome)...

    Started by Stats student 2008‎, 07-03-2008 03:11 PM
    • Replies: 11
    • Views: 4,980
    07-06-2008, 07:52 PM Go to last post
  51. Need help in excel with right tail??

    Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are...

    Started by tyrankj‎, 08-21-2008 01:55 AM
    • Replies: 11
    • Views: 26,321
    08-21-2008, 12:59 PM Go to last post
  52. just to get this straight

    Hi, I have a column with several hundred percentage changes of stockprices. I was going to make a t-test to test if my expected value is...

    Started by tylerdurden1‎, 10-06-2008 04:07 PM
    • Replies: 11
    • Views: 2,986
    10-07-2008, 05:16 PM Go to last post
  53. What's between ANOVA and linear model

    Hi everybody, I'm new around here, so if i do some mistakes regarding the threads etc. not to mention the statisitcal terms, sorry : ) I have a...

    Started by doctor‎, 10-12-2008 12:44 PM
    • Replies: 11
    • Views: 8,033
    10-15-2008, 07:30 PM Go to last post
  54. Unhappy Help! How to interpret t-tests/t values?

    Hello, I'm a journalist researching a story for a mental health publication. A number of studies I'm looking at give their results in terms of "t...

    Started by KristieR‎, 10-22-2008 12:52 PM
    • Replies: 11
    • Views: 133,448
    10-31-2008, 09:28 AM Go to last post
  55. Where can I find U values

    Hello, I need to find Wilcoxon-Wilcox table for critical values of U,for n1=15,n2=15, a=0.05 & a/2=0.025. I can use the values or where to find...

    Started by pugowner‎, 10-28-2008 08:10 PM
    • Replies: 11
    • Views: 3,973
    10-29-2008, 09:32 PM Go to last post
  56. Ordered wieghted predictors: How to correlate them with observation?

    Dear All, I am a physical chemist (not a statistician) so please forgive what can possibly be a naive question. If I have three ordered...

    Started by quantumjazz‎, 01-31-2009 01:43 PM
    • Replies: 11
    • Views: 3,023
    02-01-2009, 02:06 AM Go to last post
  57. How to do ANOVA test analysis in Excel 2007?

    Hi everybody, I'm new in this forum and in statistics analysis too, hoping that somebody could help me and I'll really be grateful. I don't...

    Started by statser‎, 02-05-2009 10:51 AM
    • Replies: 11
    • Views: 83,107
    07-06-2009, 10:49 PM Go to last post
  58. Probability of getting 13 of the same suit

    Hello! I'm trying to figure out how to calculate the odds of being dealt 13 cards of the same suit out of a standard 52 card deck. Example: Say...

    Started by datune‎, 02-27-2009 02:56 PM
    • Replies: 11
    • Views: 16,635
    03-01-2009, 11:27 AM Go to last post
  59. Not sure what test to use in SPSS?

    i have 4 IVs (wealth, health, social connectedness and love) and 1 DV but theyre all in numberical format. Does anyone know how to measure...

    Started by Elvenmunky‎, 04-24-2009 01:55 AM
    • Replies: 11
    • Views: 8,206
    04-27-2009, 05:32 AM Go to last post
  60. Normality

    I'm not sure how to interpret the Shapiro-Wilk test correctly. Skewness and kurtosis suggest a normal distribution. A normal Q-Q plot suggests a...

    Started by lph2005‎, 04-25-2009 03:03 PM
    • Replies: 11
    • Views: 6,075
    04-27-2009, 06:39 PM Go to last post

+ Post New Thread
Page 6 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 56 106 ... 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