1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    1,878
+ Post New Thread
Page 113 of 294 FirstFirst ... 13 63 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 163 213 ... LastLast
Threads 6721 to 6780 of 17591

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: 197,028
    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: 66,890
    09-30-2005, 09:44 AM Go to last post
  1. comparing group probabilities - which test to use

    Hi all, I have a data set that consists of 19 populations and 14 genetic loci that have been sampled from each of the 19 populations. The 14 loci...

    Started by mrwawa‎, 12-03-2012 10:47 AM
    • Replies: 4
    • Views: 1,506
    12-03-2012, 01:25 PM Go to last post
  2. Unhappy Coding question.

    Hi, This probably has a very simple answer but I can't find any of my 1st year SPSS workshop help sheets. Basically. For our research we...

    Started by kt92m‎, 12-03-2012 09:59 AM
    • Replies: 0
    • Views: 1,354
    12-03-2012, 09:59 AM Go to last post
  3. Correlation Help between ordinal and nominal data

    Hi Im new on these forums and i was having difficulty in deciding what test to use for my data. Let me give a background into my information. i...

    Started by shady‎, 12-01-2012 11:46 PM
    • Replies: 1
    • Views: 1,379
    12-03-2012, 06:20 AM Go to last post
  4. One-way ANOVA or Chi˛.

    Hey guys, I'm busy with a market research case for school and my team is in doubt on which analysis to use. It's important to note that it's not a...

    Started by Dekadez‎, 11-30-2012 11:06 AM
    • Replies: 3
    • Views: 65,514
    12-03-2012, 06:03 AM Go to last post
  5. Kruskal Wallis and Mood's median

    Would appreciate some perspective on the following: Is the Mood's median test now rarely used? I am comparing right-skewed distributions (3...

    Started by StatsClue‎, 11-02-2012 03:25 AM
    • Replies: 11
    • Views: 6,412
    12-03-2012, 03:04 AM Go to last post
  6. Question Comparing means with known standard deviation known

    1). The average number of pages for a simple random sample of 20 physics textbooks is 435. The average number of pages for a simple random sample of...

    Started by devimon‎, 12-02-2012 05:48 PM
    comparing means, simple random sampling
    • Replies: 0
    • Views: 4,581
    12-02-2012, 05:48 PM Go to last post
  7. Determining sample size

    Hi all, I am carrying out a study to compare the accuracy of five independent glucose testing machines against a known calibrated reference machine....

    Started by Statisfactory‎, 12-02-2012 12:17 PM
    • Replies: 0
    • Views: 2,309
    12-02-2012, 12:17 PM Go to last post
  8. Is the transpose of a g inverse the g inverse of transpose of the matrix?

    While working with linear models,I came across the situation where the proof of some results might be easier if we apply that transpose of g inverse...

    Started by arsene_lady‎, 12-02-2012 01:55 AM
    linear models, r programming and usage, statistical model
    • Replies: 2
    • Views: 1,866
    12-02-2012, 09:00 AM Go to last post
  9. MLE for bivariate normal

    How can I estimate parameters mix,miy,sigmax,sigmay and ro with MLE, if I have bivariate normal dist.?

    Started by mboricgs‎, 12-02-2012 06:28 AM
    • Replies: 1
    • Views: 2,130
    12-02-2012, 08:33 AM Go to last post
  10. Kruskal Wallis/Dunn's test issue

    Apologies, I cannot find an answer to this on these boards... Anyway, first post... I have been asked to look at some stats by a colleague, and...

    Started by pnwright‎, 12-01-2012 05:16 AM
    • Replies: 8
    • Views: 14,106
    12-02-2012, 05:11 AM Go to last post
  11. confidence intervals - t or z?

    The question that I have been given on an assignment is this We select a random sample of 10 healthy adults and record their pulse rates. The...

    Started by wonderstruck‎, 12-01-2012 11:20 PM
    • Replies: 0
    • Views: 2,196
    12-01-2012, 11:20 PM Go to last post
  12. correlation coefficient

    The correlation coefficient between x and y is 0.85 Statement 1-then the correlation coefficient between x/2 and y/2 is 0.85/2 Statement 2-then...

    Started by MTE-11‎, 12-01-2012 10:07 AM
    • Replies: 1
    • Views: 2,308
    12-01-2012, 11:06 AM Go to last post
  13. New to statistics, need a few steps on solving problem

    Okay guys, as the title says, I'm pretty new to stats. Currently I am working on a problem for a college class that is giving me a lot of grief. I...

    Started by SilasStrongjaw‎, 11-30-2012 07:36 PM
    95% confidence level, rejection regions, standard deviation, test statistic
    • Replies: 1
    • Views: 1,667
    12-01-2012, 05:35 AM Go to last post
  14. Finding value of a test statistic, but no standard deviation?

    I know there should be another way of finding it if the standard deviation isn't given in the problem, but I can't for the life of me find anything...

    Started by ermagersh‎, 11-30-2012 12:59 PM
    • Replies: 1
    • Views: 2,767
    11-30-2012, 01:13 PM Go to last post
  15. Fisher Information

    Can someone show me visually how the fisher information for a normal distribution goes from... (x-\mu/\theta^2) is equal to (1/\theta^2) I...

    Started by simplemts‎, 11-30-2012 12:20 AM
    • Replies: 0
    • Views: 2,310
    11-30-2012, 12:20 AM Go to last post
  16. mixed design; 2 between subjects and 1 within subjects factors

    Hi everyone, As a follow up to my previous thread, I have 2 between-subjects and 1 within-subjects (w/ 3 levels) factors. 1. For...

    Started by selecttext‎, 11-29-2012 11:15 PM
    • Replies: 0
    • Views: 1,488
    11-29-2012, 11:15 PM Go to last post
  17. Problem Involving Moment Generating Functions

    Hi, I am working on this assignment and have no idea where to begin. I, however, am not asking for anyone to immediately provide an answer, as I...

    Started by S-C-3-1-3‎, 11-29-2012 03:06 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 3,011
    11-29-2012, 03:35 PM Go to last post
  18. Exclamation Need help in Thesis Proposal (Correlational Study) NEED HELP ASAP!

    So my central question is this: Is there a correlation in positive emotional output between winning and losing among young-adult to middle-aged NBA...

    Started by Russ369‎, 11-29-2012 03:10 AM
    • Replies: 13
    • Views: 1,959
    11-29-2012, 01:01 PM Go to last post
  19. opposite of a formula

    I know the formula for number of elements in a correlation matrix triangle is: \frac{p(p-1)}{2} = t where: p = number of predictors t =...

    Started by trinker‎, 11-29-2012 09:31 AM
    algebra
    • Replies: 3
    • Views: 1,845
    11-29-2012, 10:40 AM Go to last post
  20. Sufficient statistics in Generalized Linear Models

    I am learning about Generalized Linear Models, and I am trying understand this page about sufficient statistics. I intuitively know what sufficient...

    Started by blue.eggplant‎, 11-29-2012 04:50 AM
    • Replies: 0
    • Views: 2,553
    11-29-2012, 04:50 AM Go to last post
  21. TOEPLITZ covariance matrix

    I am conduting a repeated measures analysis. My work shows that the TOEPLITZ covariance structure is most suitable. I am now trying to understand...

    Started by emily.stats‎, 11-28-2012 06:22 AM
    • Replies: 4
    • Views: 2,318
    11-29-2012, 03:32 AM Go to last post
  22. negative correlation

    hello i do conjoint analysis in carpet industry. i have six attributes (two of them have 3 levels and others have 4 levels). number of samples are...

    Started by samira‎, 11-26-2012 04:46 PM
    • Replies: 3
    • Views: 2,058
    11-29-2012, 02:42 AM Go to last post
  23. Lightbulb Confidence intervals, proportions

    A simple random sample of 1000 New Yorkers finds that 87 are left-handed. (a) Find the 95% confidence interval for the proportion of New Yorkers...

    Started by devimon‎, 11-28-2012 11:53 PM
    confidence intervals, population, proportions
    • Replies: 1
    • Views: 869
    11-28-2012, 11:59 PM Go to last post
  24. Explain how to conduct statistical analysis on survey results

    I am a philosophy graduate student and am currently taking an empirical research class. I slacked off in this class this semester, as it is not...

    Started by flame‎, 11-27-2012 10:33 PM
    • Replies: 5
    • Views: 3,568
    11-28-2012, 07:50 PM Go to last post
  25. Testing a number sequence for a deviation from expected

    Hi, I have a number sequence (~22,000 numbers) with numbers 1-4 that should be appearing in a random fashion. I know that the numbers have...

    Started by thetalldude‎, 11-28-2012 06:21 PM
    • Replies: 0
    • Views: 1,427
    11-28-2012, 06:21 PM Go to last post
  26. Time Series/Trouble Identifying Model Type

    Here is the question that I have: I'm having trouble identifying what kind of model that is. It looks like ARMA(2,1), but using first order...

    Started by APOCooter‎, 11-28-2012 04:32 PM
    • Replies: 0
    • Views: 1,296
    11-28-2012, 04:32 PM Go to last post
  27. Post Statistic type question university

    The Canadian Census collects demographic data for specific groups such as lone-parent families, seniors, and those from specific language groups via...

    Started by yelloo‎, 11-28-2012 03:21 PM
    • Replies: 2
    • Views: 1,456
    11-28-2012, 03:30 PM Go to last post
  28. Cool a challenging Question !

    any helpful guidelines ? Question As you may have noticed, Dr.Mike says “right” in class, A LOT, and now Dr.Mike has made this into a CFC...

    Started by james12‎, 11-28-2012 10:54 AM
    • Replies: 2
    • Views: 1,206
    11-28-2012, 12:20 PM Go to last post
  29. Can someone help with this question ?

    The Ledd Pipe Company has received a large shipment of pipes, and a quality control inspector wishes to estimate the average diameter of these...

    Started by hamza101‎, 11-28-2012 11:10 AM
    • Replies: 1
    • Views: 1,309
    11-28-2012, 11:13 AM Go to last post
  30. University help, please! Don't know what tests to use! Only 4 needed.

    Hi guys, I'm studying an equine degree, and have had to do a statistics module. Coming from an agricultural background, I have no drive for...

    Started by clarkeya‎, 11-28-2012 10:45 AM
    • Replies: 1
    • Views: 1,376
    11-28-2012, 10:49 AM Go to last post
  31. How to do this question!

    Many colleges and universities hold a “blood drive” for organizations such as the Red Cross. To help with the planning of an upcoming blood drive,...

    Started by hamza101‎, 11-28-2012 05:31 AM
    • Replies: 1
    • Views: 1,184
    11-28-2012, 10:24 AM Go to last post
  32. How to compare two groups of means- HELP!!

    I am a microbiology graduate student struggling to figure out how to analyze some gene expression data. Here is a synopsis of my experiment/data: I...

    Started by pohlcath‎, 11-27-2012 04:24 PM
    • Replies: 2
    • Views: 1,936
    11-28-2012, 09:48 AM Go to last post
  33. Finding the Limiting Distribution

    For the pdf f(x) = (θ^2+θ)*(x^(θ-1))*(1-x), 0<x<1, let Y1<Y2<...<Yn denote the corresponding order statistics. Find β so that Wn = (n^β)*Y1...

    Started by marty6491‎, 11-27-2012 09:22 PM
    • Replies: 4
    • Views: 3,460
    11-28-2012, 09:26 AM Go to last post
  34. distribution of the corelation coefficient

    In the straight-line regression, since r=beta*SY/SX and beta is a normal distribution, so r is a normal...

    Started by eugllena‎, 11-28-2012 12:13 AM
    • Replies: 1
    • Views: 1,120
    11-28-2012, 12:23 AM Go to last post
  35. using alternative for Wilcoxon signed rank test for yield data?

    Hi, for comparing relative yields from a treatment in consecutive trials I now use Wilcoxon signed rank test (example below). This requires identical...

    Started by Robi‎, 11-21-2012 06:03 AM
    • Replies: 2
    • Views: 1,455
    11-28-2012, 12:23 AM Go to last post
  36. Likelihood Ratio (Simple)

    We are given the following distribution: x 1 2 3 4 f0(x) .2 .3 .3 .2 f1(x) .1 .4 .1 .4 The sorted Likelihood Ratio...

    Started by simplemts‎, 11-27-2012 09:07 PM
    • Replies: 2
    • Views: 2,055
    11-27-2012, 09:24 PM Go to last post
  37. not sure of statistical test, probably some kind of ANOVA

    Hi all, I am not sure how to proceed given my data. I would appreciate if anyone could suggest a design. I tested the acceleration responses...

    Started by selecttext‎, 11-27-2012 01:37 PM
    • Replies: 9
    • Views: 1,765
    11-27-2012, 09:23 PM Go to last post
  38. Help rearranging an equation

    Hi all, rearranging equations still baffles me somewhat...I'll give some example sand questions I have re them This is from...

    Started by urbano‎, 11-27-2012 06:03 PM
    • Replies: 1
    • Views: 1,913
    11-27-2012, 08:49 PM Go to last post
  39. Anova help!!!

    I'm just finishing the proposal for my dissertation and i am totally confused! So : I have 4 IV AND 2 DV and i don t know what type of anova to do...

    Started by Merisor‎, 11-26-2012 04:39 PM
    • Replies: 5
    • Views: 1,203
    11-27-2012, 08:28 PM Go to last post
  40. Update: Need P/1 exam practice?

    I now have three practice exams available. You may choose 10 questions in 1 hour, twenty questions in two hours or thirty questions in three hours if...

    Started by geniuslikeme‎, 11-27-2012 08:15 PM
    • Replies: 0
    • Views: 817
    11-27-2012, 08:15 PM Go to last post
  41. Evidence of Reliability and Validity of Revised Inventory

    We have been using a marriage inventory which asks questions of engaged couples about how they feel about different aspects of marriage. They...

    Started by paschif‎, 11-27-2012 07:04 PM
    • Replies: 0
    • Views: 954
    11-27-2012, 07:04 PM Go to last post
  42. Thumbs up Normal Approximation questions. Finding p?

    1) An ESP test involves five shapes (star, square, circle, wave, cross) on cards. We record 1000 attempts. (a) What is the probability that a subject...

    Started by devimon‎, 11-26-2012 11:16 PM
    finding p, normal approximation, probability
    • Replies: 1
    • Views: 1,763
    11-27-2012, 05:35 PM Go to last post
  43. Weighted standard deviation

    Hey everyone, I suppose I have a rather simple question . I have following information: 17 year olds, mean of height 176.50, standard deviation...

    Started by gsp2‎, 11-27-2012 10:48 AM
    • Replies: 0
    • Views: 1,941
    11-27-2012, 10:48 AM Go to last post
  44. Normal Distribution

    Hi I have a question regarding normal distribution that I had on a quiz, but seemed to have gotten wrong. My professor marked the answers and I have...

    Started by nycguy123‎, 11-26-2012 08:56 PM
    • Replies: 1
    • Views: 998
    11-27-2012, 01:55 AM Go to last post
  45. Critical Value (T-Statistic Question)

    Hey everyone, I have gathered some data for a school project and I am calculating the various ways to express the data. I have come to the point...

    Started by themest‎, 11-26-2012 09:02 PM
    critical value, null hypothesis, t-statistic, t-table, t-test
    • Replies: 0
    • Views: 1,073
    11-26-2012, 09:02 PM Go to last post
  46. How should I aggregate data across multiple periods

    Hi, I am trying to figure out the best way to aggregate data and am unable to find anything in the literature (e.g., Google or this site) to give...

    Started by edstahlman‎, 11-26-2012 07:24 PM
    aggregation
    • Replies: 0
    • Views: 1,441
    11-26-2012, 07:24 PM Go to last post
  47. How to eliminate the effect of a correlating variable

    I have two variables with a very strong negative correlation (on the order of -.80). Variable A is my key variable, the variable I want to use for...

    Started by mathgirl‎, 11-26-2012 05:12 PM
    correlations; dependancy
    • Replies: 0
    • Views: 1,149
    11-26-2012, 05:12 PM Go to last post
  48. Distribution of fitted values

    I need to find/show the distribution of the fitted values of y^=μ^ I'm not even sure where to start with this.

    Started by amandabow39‎, 11-26-2012 03:36 PM
    • Replies: 1
    • Views: 1,134
    11-26-2012, 04:09 PM Go to last post
  49. Jacobin of Kronecker product

    If D is a qxq symmetric matrix, let Y=D ⊗ Identity(N) is a kronecker product of D and a NxN identity matrix. Is the Jacobian of Y w.r.t DI,...

    Started by cyrusbea‎, 11-26-2012 03:55 PM
    • Replies: 0
    • Views: 1,263
    11-26-2012, 03:55 PM Go to last post
  50. Sign Test?

    Hi everyone, i've got a question and been told to use a test, and i think its the sign test which i should use, just need some clarification! ...

    Started by davidsmith‎, 11-25-2012 11:05 AM
    • Replies: 3
    • Views: 1,102
    11-26-2012, 03:15 AM Go to last post
  51. Non-parametric test equivalent to two-way anova?

    Hi everyone. I have a question on non-parametric tests that replace anova tests. In my first data set, I have scat density data grouped according...

    Started by mbopi‎, 11-25-2012 10:03 PM
    density, kruskal-wallis, non-parametric test, two-way anova
    • Replies: 1
    • Views: 4,631
    11-25-2012, 11:14 PM Go to last post
  52. What kind of test could be done on the following data ?

    Bit of background....in this hypothetical experiment there are 5 people and there are two different kinds (Type 1 and Type 2) of health tablet...

    Started by urbano‎, 11-25-2012 08:01 PM
    • Replies: 0
    • Views: 1,364
    11-25-2012, 08:01 PM Go to last post
  53. Testing the significance of change between two groups

    Hi all, I was hoping for some advice on how to test the change between two groups. First of all, my groups are relatively large (n=100-150)....

    Started by Bio90‎, 11-25-2012 05:40 PM
    groups, significance testing
    • Replies: 0
    • Views: 2,172
    11-25-2012, 05:40 PM Go to last post
  54. Hypothesis Testing Practice.

    Im here stressing my mind on this question and I would appreciate to know if I am on the right track. So the question is like: A boy is...

    Started by makusaki1337‎, 11-25-2012 04:08 PM
    • Replies: 0
    • Views: 1,370
    11-25-2012, 04:08 PM Go to last post
  55. Can I merge these groups for increased statistical power?

    I did a biological experiment with 4 groups (n=5 per group). Each group received a treatment as follows: Gr.1: Treatment A Gr.2: Treatment B...

    Started by maka09‎, 11-24-2012 05:25 AM
    • Replies: 5
    • Views: 1,666
    11-25-2012, 02:58 PM Go to last post
  56. Please help with t statistics, I really appreciate any assistance

    Thank you for viewing my questions I have solved the answers on my own. Hi, Thank you for any assistance with these questions. I have been...

    Started by determinedtosolve‎, 11-25-2012 12:20 PM
    • Replies: 0
    • Views: 1,122
    11-25-2012, 12:20 PM Go to last post
  57. Average Tenure and Employee Attrition

    Hi All, My company's attrition rate is about 25%. A senior member of the organization believes that because the attrition rate is 25%, this means...

    Started by dbats‎, 11-25-2012 06:09 AM
    • Replies: 0
    • Views: 2,589
    11-25-2012, 06:09 AM Go to last post
  58. Help with inter-rate reliability calculation with multiple raters and nominal data

    I have 12 raters. Each of them is going to rate if a patient needs a certain diagnostic test. The answer is yes or no. I would like to calculate the...

    Started by Sophie500‎, 11-24-2012 11:01 PM
    • Replies: 0
    • Views: 1,934
    11-24-2012, 11:01 PM Go to last post
  59. Help finding probability with sample mean & standard deviation

    Can anyone help me on how to do this problem? I'm so confused

    Started by Laura123‎, 11-24-2012 07:48 PM
    • Replies: 2
    • Views: 2,114
    11-24-2012, 10:00 PM Go to last post
  60. Please assist with this question?

    In a recent survey by the Miami Mental Health Clinic, Miami's general population prevalence mental health illnesses yielded the following data: 21...

    Started by makusaki1337‎, 11-24-2012 08:23 PM
    • Replies: 2
    • Views: 1,771
    11-24-2012, 09:45 PM Go to last post

+ Post New Thread

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