1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    1,849
+ Post New Thread
Page 12 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 29 30 31 62 112 ... LastLast
Threads 661 to 720 of 17586

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: 66,761
    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: 196,763
    07-16-2014, 11:01 AM Go to last post
  1. Finding the time-to-failure of a lightbulb?

    How would I find the time-to-failure of a lightbulb with a z-score of 1.25? I'm not sure what formula I would use... I'm also given the mean, the...

    Started by alphaville‎, 11-15-2012 10:16 PM
    • Replies: 0
    • Views: 1,208
    11-15-2012, 10:16 PM Go to last post
  2. Basic question

    Suppose you had a pile of 120 million red and blue jelly beans where 20 out of every 100,000 of them were red jelly beans. And suppose you moved ten...

    Started by Alpine‎, 07-22-2015 11:12 PM
    • Replies: 2
    • Views: 1,119
    07-23-2015, 08:49 PM Go to last post
  3. How to Calculate p-value of Grade Averages

    I have average test scores for two populations: male and female. The average score for females is 92. The average score for males is 89. Given...

    Started by alpinegroove‎, 03-01-2013 08:50 PM
    • Replies: 11
    • Views: 5,207
    07-05-2013, 03:05 PM Go to last post
  4. P-value: 2 populations (not samples) - different sizes

    Is it possible to compute the p-value when the data I have is for two populations, rather than samples? Additionally, the population sizes are not...

    Started by alpinegroove‎, 10-13-2013 12:40 PM
    • Replies: 6
    • Views: 2,449
    10-15-2013, 04:14 PM Go to last post
  5. Variables which sum to a constant - ANOVA, MANOVA or none of the above?

    Help with the following dilemma would be much appreciated: I asked a group of subjects to make a series of 12 binary choices regarding...

    Started by alps‎, 06-05-2012 05:45 PM
    • Replies: 3
    • Views: 2,224
    06-06-2012, 06:43 PM Go to last post
  6. Confidence Intervals

    Let p1 and p2 be the respective proportions of women with nutritional anemia in each of two developing countries. If a random sample of 250 women...

    Started by ALRS‎, 01-28-2015 08:11 PM
    • Replies: 0
    • Views: 1,541
    01-28-2015, 08:11 PM Go to last post
  7. statistics problem

    Hello :wave: Could you please help me with this problem on statistics? Thanks so much :):) It has been suggested that showing the face of the...

    Started by als20‎, 10-21-2009 03:28 PM
    • Replies: 2
    • Views: 2,578
    10-24-2009, 05:30 PM Go to last post
  8. two-sample K-S test for repeated measurement

    Hello everyone, I would like to know if there is an analog to the 2 samples Kolmogorov-Smirnov test when each sample is composed of repeated...

    Started by alstublieft‎, 12-01-2008 11:44 AM
    • Replies: 0
    • Views: 2,741
    12-01-2008, 11:44 AM Go to last post
  9. Comparing groups - z-scores

    I have two groups A and B. Each subject has provided scores on a number of tests, and I want to give each subject an overall score based on these...

    Started by Alsvartr‎, 08-16-2006 03:20 AM
    • Replies: 2
    • Views: 7,664
    08-16-2006, 11:59 AM Go to last post
  10. Floor Effects

    Hi! I want to compare two groups on an accuracy measure (measured as a %). I have assessed the ditribution of scores for each groups, and while...

    Started by Alsvartr‎, 09-20-2006 04:19 PM
    • Replies: 2
    • Views: 5,673
    09-21-2006, 05:13 AM Go to last post
  11. Two-Way ANOVA without raw scores

    Hey, I need to be able to perform a two-way ANOVA without raw data - i.e. with only means, standard deviations and sample sizes available. ...

    Started by Alsvartr‎, 07-26-2008 11:15 AM
    • Replies: 4
    • Views: 7,752
    07-26-2008, 01:28 PM Go to last post
  12. One-way ANOVA homework help

    My teacher asked the following (and the first part of my answer is included): 1. We are interested whether Motivation (mot) is different among...

    Started by ALT803‎, 12-02-2011 05:02 PM
    • Replies: 10
    • Views: 3,235
    12-02-2011, 06:17 PM Go to last post
  13. effect size question

    I'm trying to find the effect size for an independent samples t-test with unequal groups sizes. n1- 506, X1- 51.45, s1- 9.578 n2- 94, X2- 54.01,...

    Started by ALT803‎, 11-16-2011 09:12 PM
    • Replies: 5
    • Views: 2,546
    11-16-2011, 09:44 PM Go to last post
  14. MANOVA question regarding writing up main effects

    My professor had us run main effects of MANOVA in two different orders in order for us to understand the impact of ordering variables. In this...

    Started by ALT803‎, 03-04-2013 10:24 AM
    • Replies: 2
    • Views: 1,701
    03-04-2013, 01:23 PM Go to last post
  15. SPSS output problem

    Hello, I'm doing a university assignment where we've received a certain SPSS output and we have to write a report on it (including results...

    Started by Altism‎, 01-01-2015 08:18 PM
    spss colinearity
    • Replies: 2
    • Views: 1,227
    01-03-2015, 05:18 AM Go to last post
  16. three-way anova help please!

    hi! i'm currently performing a practical in R requiring 3-way fixed effects ANOVA for my maths degree. There are 2 quantitative factors -...

    Started by alucks‎, 03-05-2006 02:17 PM
    • Replies: 4
    • Views: 3,218
    03-05-2006, 04:21 PM Go to last post
  17. logistic regression for comparison of two gropus

    Is it okay to use logistic regression to compare a variable between two groups? (as a non-parametric alternative to t-test when its assumptions are...

    Started by Alvarez‎, 03-17-2011 05:31 PM
    • Replies: 7
    • Views: 8,627
    05-21-2011, 01:57 AM Go to last post
  18. H0: μ≥18.1 ,H1: μ<18.1, x̄ = 16.8 , s = 4.7?

    Given that level of significance is 0.1, how do I A)find sample size( not sure if i need to find this but i think i do,im really confused on how...

    Started by alvinhwang63‎, 07-21-2010 03:31 AM
    • Replies: 1
    • Views: 31,224
    07-21-2010, 03:28 PM Go to last post
  19. Hypothesis testing

    I have an assignment due in a little while and I would like to double check my answers... it's basically true and false of m/c 1. The probability...

    Started by always_confused‎, 11-01-2006 06:32 PM
    • Replies: 1
    • Views: 3,564
    11-01-2006, 07:55 PM Go to last post
  20. help please

    :confused: i've just started studing statistics and i want to use the chebychev's therorm, however i'm not sure how can i find the value of the...

    Started by aLwEjDaN‎, 08-26-2006 04:09 PM
    • Replies: 1
    • Views: 2,319
    08-27-2006, 12:21 PM Go to last post
  21. Interpreting an unstandardized partial regression coefficient

    Hi, anyone know what two equivalent interpretations of the below unstandardized partial regression is? Y^MathsValue = -7.31-0.27XAnxiety +...

    Started by Alycat‎, 04-04-2013 06:32 AM
    coefficient, interpretation, negative, partial, regression
    • Replies: 0
    • Views: 2,986
    04-04-2013, 06:32 AM Go to last post
  22. Why does a larger sample size produce a smaller p-value?

    Hi, I need help with this problem... The obtained p value for a correlation analysis is .036, for a sample size is 50. If the analysis had been...

    Started by Alycat‎, 04-04-2013 06:37 AM
    correlation, p value, sample size
    • Replies: 2
    • Views: 5,140
    04-05-2013, 05:55 AM Go to last post
  23. Talking How to interpret a standardized multiple regression coefficient

    How can I write an interpretation of the standardized multiple regression equation for both Age of Child and Number of Siblings in this model: ...

    Started by Alycat‎, 04-04-2013 06:44 AM
    coefficient, interpret, multiple, regression, standardized
    • Replies: 4
    • Views: 36,577
    04-05-2013, 09:34 PM Go to last post
  24. Different degrees of freedom when reporting multiple T-tests

    Please refer to Table attached. This study compares those without a phobic disorder (n=83) with those with a phobic disorder (n=16) on Temperament...

    Started by Alyssa1‎, 08-15-2016 12:37 AM
    • Replies: 3
    • Views: 1,040
    08-15-2016, 11:26 AM Go to last post
  25. Is this question as simple as it seems?

    Fluorescent light tubes used by a firm have a target life of 1600 hours. However, accumulated data shows a mean time to failure of 1570 hours. What...

    Started by amahesh2012‎, 04-28-2011 12:32 AM
    • Replies: 8
    • Views: 2,048
    04-28-2011, 01:06 AM Go to last post
  26. Two-way ANOVA with or without replication?

    The logistics department of a large firm employs three “estimators” whose job it is to decide the likely cost of delivering their products to their...

    Started by amahesh2012‎, 04-29-2011 02:02 PM
    • Replies: 0
    • Views: 8,041
    04-29-2011, 02:02 PM Go to last post
  27. Paramaetric and Nonparametric Data

    I NEED help big time! I have been reading and reading forever and I just can't grasp the difference in the two. I have a matching assignment that is...

    Started by Amanda‎, 08-10-2007 01:58 PM
    • Replies: 0
    • Views: 1,950
    08-10-2007, 01:58 PM Go to last post
  28. Random sampling

    Hi, I have a querie about methods of random sampling. I need to do an audit of patient records over a 3 month period. However, the number of...

    Started by amanda29‎, 01-25-2010 07:46 AM
    • Replies: 2
    • Views: 2,219
    01-26-2010, 10:22 AM Go to last post
  29. Normal Distribution

    A set of reading scores for fourth-grade children has a mean of 25 and a standard deviation of 5. A set of scores for sixth-grade children has a mean...

    Started by Amanda8991‎, 10-25-2006 11:54 AM
    • Replies: 1
    • Views: 4,988
    10-25-2006, 08:44 PM Go to last post
  30. How to deal with bimodal distributions in SPSS?

    I ran a psychology study in which kids watched 1 of 4 cartoons, and then performed 3 tasks. On one of the tasks, I obtained a bimodal distribution. I...

    Started by Amandabeth‎, 07-28-2012 03:20 PM
    bimodality, linear regression
    • Replies: 4
    • Views: 16,994
    07-28-2012, 05:12 PM Go to last post
  31. 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: 1,129
    11-26-2012, 04:09 PM Go to last post
  32. Question Assistance - ANOVA

    Hello All - I'm struggling with my Psychology homework. I have to work out MS within, but I'm not sure how to do it. I know that the calculate MS...

    Started by AmandaJ‎, 08-11-2010 03:59 AM
    • Replies: 0
    • Views: 1,692
    08-11-2010, 03:59 AM Go to last post
  33. Smile STATISTICS EASY PROBLEM help

    how many ways can you arrange a 3 digit number if first number cant be 0 and no numbers can be repeated. My guess is 9*8*7 which equals 504. BUT...

    Started by amandalorenzo484‎, 10-08-2017 12:45 AM
    easy
    • Replies: 2
    • Views: 197
    10-08-2017, 08:36 PM Go to last post
  34. Question demonstrate that 3 sequences are equally likely to occur when tossing a coin 10 times

    Hi, I am in an intro to stats class and I am totally lost. Please explain as I said I have no idea what to do. Thanks for your help in advance! ...

    Started by amandaq‎, 02-08-2017 07:38 PM
    • Replies: 0
    • Views: 1,425
    02-08-2017, 07:38 PM Go to last post
  35. Spearmans or Pearsons.....???

    Hello, I am have very last minute dissertation panic. My dissertation is done, except I dont know which results section to use... the one using...

    Started by amandar001‎, 04-19-2010 10:52 AM
    • Replies: 2
    • Views: 2,577
    04-19-2010, 11:16 AM Go to last post
  36. Unhappy Homework Help

    The problem is: Consider the experiment of tossing two dice. Let Y denote the absolute difference of the upturned faces. A) Find the mean and...

    Started by amandaw‎, 02-15-2013 08:20 PM
    expected value, variance
    • Replies: 3
    • Views: 1,154
    02-15-2013, 09:55 PM Go to last post
  37. Exploratory Data Analysis

    Hey guys, I'm a post-graduate university student and for one of my classes I have to undertake an EDA of the following data... I have 20 sets...

    Started by amandaxoxo‎, 08-15-2012 03:51 AM
    • Replies: 5
    • Views: 2,181
    08-15-2012, 07:30 PM Go to last post
  38. median absolute deviation

    I am trying to use median absolute deviation method to test my data for outliers. I understand the formula for MAD and that 'b' is a constant of...

    Started by amanda_hight‎, 03-03-2014 06:57 PM
    • Replies: 2
    • Views: 1,397
    03-04-2014, 10:25 AM Go to last post
  39. Mean, median, mean

    Hi! Seemingly easy question, but I'm really struggling with this. I am trying to determine the "average number" of units bought per customer,...

    Started by Amanda_UK‎, 01-15-2014 01:06 PM
    • Replies: 8
    • Views: 2,210
    01-16-2014, 01:02 PM Go to last post
  40. Statistical error

    Hi! I just need someone to quickly confirm/correct: I ran a survey and managed to get 3540 responses, i.e. people to respond. My sample size is...

    Started by Amanda_UK‎, 01-23-2014 07:21 AM
    • Replies: 0
    • Views: 505
    01-23-2014, 07:21 AM Go to last post
  41. some help with this null/alternative hypothesis. i tried & my professor says im wrong

    This is the problem: Are people who got arrested in NYC in 1989 for the first time younger, on average, than people who are getting arrested more...

    Started by amanduhlopez‎, 05-22-2011 11:57 AM
    • Replies: 2
    • Views: 2,886
    05-23-2011, 11:28 AM Go to last post
  42. jaccard similarity coeff's and lots of zeros...

    I am trying demonstrate that jaccard similarity coefficients for fungal species between different combinations of trees are different. I believe I...

    Started by Amanita22‎, 10-29-2008 05:20 PM
    • Replies: 0
    • Views: 2,597
    10-29-2008, 05:20 PM Go to last post
  43. URGENT Help with Regression Interpretation

    Hi guys, i know this is my first post. i need help urgently with interpreting regression test which i have conducted. i cant figure out how to check...

    Started by amanj‎, 09-23-2008 07:36 PM
    • Replies: 5
    • Views: 3,342
    09-23-2008, 08:31 PM Go to last post
  44. Computing Power

    I know that power is one minus beta...but how do you calculate beta?

    Started by amanning‎, 10-12-2005 09:48 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 7,259
    10-12-2005, 11:25 PM Go to last post
  45. Smile Trend Analysis

    What are the degrees of freedom in trend analysis? And what goes in the denominator? Does it matter what type of trend analysis you are doing, or...

    Started by amanning‎, 12-06-2005 10:49 PM
    • Replies: 4
    • Views: 10,385
    12-06-2005, 11:17 PM Go to last post
  46. Calculating conf intervals from a function of other variables

    Hello, I am analyzing some biochemistry kinetics data, and am trying to determine the confidence interval for a calculated parameter. I would be...

    Started by amanosz‎, 01-02-2008 12:58 PM
    • Replies: 1
    • Views: 2,227
    01-02-2008, 03:08 PM Go to last post
  47. Permutations

    I was asked, how many number of combinations of five digit number followed by three letters. The numbers have to be first and letters in the end....

    Started by amanp786‎, 01-30-2014 03:35 PM
    • Replies: 1
    • Views: 734
    01-30-2014, 11:59 PM Go to last post
  48. Working with size 'range'

    Hi all, Firstly I appreciate this might be a really simple question so I apologise! I have raw data of Size and Frequency (size of fish, number...

    Started by amanxman‎, 04-05-2009 09:41 PM
    • Replies: 0
    • Views: 1,574
    04-05-2009, 09:41 PM Go to last post
  49. how to check if data has the pareto distribution

    I have about 40 data and I want to know if they have pareto distribution or no. I tried SPSS 19 but I couldn't do that. and I'm going to do it by R...

    Started by amarestan‎, 06-13-2011 10:29 AM
    pareto
    • Replies: 1
    • Views: 4,600
    06-13-2011, 02:22 PM Go to last post
  50. Urgent: Multiple Regression Hat Matrix Proof

    Hi all, Quick question for you: How would I go about proving that var(y-hat) = sigma^2 * H (H is the hat matrix) Thanks for any help! ...

    Started by amarkham‎, 03-30-2011 03:44 PM
    • Replies: 4
    • Views: 6,284
    03-31-2011, 06:51 PM Go to last post
  51. Really silly question...

    post deleted

    Started by amarkham01‎, 03-05-2011 11:48 AM
    • Replies: 0
    • Views: 2,534
    03-05-2011, 11:48 AM Go to last post
  52. Binomial response variable with 3 continuous and 1 categorical predictor. Best test?

    Hello I have a binomial response variable. Predictors are composed of 3 continuous variables (the results of a Principle Components Analysis of...

    Started by amarumayo‎, 11-01-2014 09:42 AM
    ancova, binomial, glm, logit
    • Replies: 1
    • Views: 1,652
    11-01-2014, 09:51 AM Go to last post
  53. Correct way to dispaly the fixed effects of a mixed effects model

    I have a question regarding crating a graph displaying the fixed effects of a mixed effects model that I cannot seem to find an answer to. I am not...

    Started by amarumayo‎, 11-03-2014 11:41 AM
    fixed effects, mixed effects model
    • Replies: 0
    • Views: 1,243
    11-03-2014, 11:41 AM Go to last post
  54. time series - ARIMA + ARIMAX + R

    Hello, I am not a statistician, a machine learning computer science person. Recently, have read quite a bit about ARIMA and ARIMAX and using them in...

    Started by Amaterasu‎, 12-29-2016 07:24 AM
    • Replies: 1
    • Views: 3,164
    12-29-2016, 01:42 PM Go to last post
  55. Question about choosing the right test

    Since I have no experience in statistics, I need the advice about how to choose the test that I could apply for the following analysis: there are 16...

    Started by amateur‎, 07-15-2012 04:42 AM
    • Replies: 0
    • Views: 1,183
    07-15-2012, 04:42 AM Go to last post
  56. Contingency Table Disaster

    Please delete thread.

    Started by AmateurStat‎, 01-13-2015 12:33 PM
    • Replies: 3
    • Views: 1,954
    01-14-2015, 11:22 AM Go to last post
  57. Gold Standard vs. New Technology

    Please delete thread.

    Started by AmateurStat‎, 01-15-2015 10:52 AM
    • Replies: 7
    • Views: 2,352
    01-16-2015, 03:52 PM Go to last post
  58. Is there ANOVA way?

    Please delete thread.

    Started by AmateurStat‎, 01-16-2015 10:02 AM
    • Replies: 1
    • Views: 1,547
    01-16-2015, 12:55 PM Go to last post
  59. Interaction term in regression question

    Hi, first time user. I am having trouble with a question and I just wanted some hints/pointers as to how to solve it. Suppose you have a dependent...

    Started by amateurstudent101‎, 04-20-2010 11:00 PM
    • Replies: 0
    • Views: 2,733
    04-20-2010, 11:00 PM Go to last post
  60. What is seasonality and how is it defined?

    Let's say that I have a univariate dataset pertaining to sales and people claim that the sales numbers follow a seasonal pattern. I get that when...

    Started by amathew‎, 01-22-2015 11:14 AM
    • Replies: 5
    • Views: 2,922
    01-22-2015, 12:24 PM Go to last post

+ Post New Thread
Page 12 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 29 30 31 62 112 ... 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