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Forum: Statistics

Statistics course and homework discussion. Elementary statistics.

1. 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...

• Replies: 1
• Views: 196,581
07-16-2014, 11:01 AM
2. 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)...

• Replies: 0
• Views: 66,632
09-30-2005, 09:44 AM
1. 2 within design but interested only in main effect and interaction

hi i'm doing a research where i want to find out pupil dilation reactions to false and true statements. and would like to find out if there are...

• Replies: 0
• Views: 1,815
03-05-2008, 06:47 AM
2. 2 x 2 OR 2 x 2 x 2 Design?

Hi, I need advice as to whether my design is a 2 x 2 or a 2 x 2 x 2. I have the following IV's IV 1 - facial emotion (happy vs. sad) IV 2...

• Replies: 4
• Views: 2,543
08-09-2012, 08:20 AM
3. 2 x 2 data, statistical test

Hi, This is a simple question, but what is the appropriate statistical test for the following situation. ...

• Replies: 3
• Views: 1,763
05-06-2013, 06:28 AM
4. 2 x 3 Chi Square?

Hi All, I have a simple question about how to input raw data into excel for a 2 x 3 chi square. I have 2 groups (I've coded them as 0 or 1...

• Replies: 1
• Views: 6,548
10-07-2009, 01:29 PM
5. 2 x 9 Chi-square analysis

Dear all, I am hoping for some advice/guidance on my statistical output. I have run a chi-square test in SPSS on a 2 x 9 grid. The output indicates...

• Replies: 1
• Views: 1,169
06-01-2015, 04:33 AM
6. 2 x2 repeated measures ANOVA, significant interaction, all the pairewise comparisons

I ran a 2 x 2 repeated measures ANOVA using SPSS (both IVs are within-subject factors). Both main effects and interaction were significant. Then I...

• Replies: 0
• Views: 936
08-05-2016, 08:27 AM
7. 2- way unbalanced ANOVA- Interaction

Hi I am wondering if it is possible to test for interaction in a 2 way unbalanced ANOVA when some cells are empty and some only contain one...

• Replies: 1
• Views: 2,333
01-14-2009, 10:45 PM
8. 2-factor Anova, why doesn't it make sense to test main effects if we have interaction

Hi Lets say you have a two factor anova model: X_{ijk}=\mu + \alpha_{i} + \beta_{j} + \gamma_{ij} + \epsilon_{ijk} Then there are 3...

• Replies: 4
• Views: 2,226
02-13-2014, 08:14 AM
9. 2-Sample or Matched Pairs Test??

A group of forty male patients at a certain hospital were randomly chosen. This group is then randomly divided into two groups. Group A received...

• Replies: 3
• Views: 11,456
05-11-2011, 10:36 PM
10. 2-sample t test - interpreting results

I have been continuing with my 2-sample t test analysis (as suggested in a previous thread). I'm having a lot of trouble explaining my results to...

• Replies: 5
• Views: 4,697
03-30-2012, 08:45 AM
11. 2-Way Analysis when the DV is Bimodally Distribution

Hello, I conducted a study with a 2X2 between-participants design. The DV is continuous but is theoretically assumed to be distributed bimodally,...

• Replies: 6
• Views: 2,065
05-22-2013, 10:23 AM
12. 2-way ANOVA and the post tests

Hi everyone :) I was wondering if you could help me with a question which should be simple... but the more I am trying to figure it out, the more...

• Replies: 0
• Views: 1,658
04-04-2014, 05:45 PM
13. 2-way ANOVA for combing results

Hello I am working in a biological science and am looking for a valid way of combining results from independent experiments. I am inexperienced in...

• Replies: 0
• Views: 1,490
07-31-2013, 01:41 PM
14. 2-way ANOVA instead of 3-way

I'm wondering if the following process is sound in place of a 3-way ANOVA... 1. I have 3 independent categorical vars: Color Shape Size ...

• Replies: 3
• Views: 2,378
09-23-2008, 12:54 PM
15. 2-way ANOVA variable problem..

Hi, if anybody has any suggestions please let me know, myself and my dissertation partner cannot figure this out! So, we have two independent groups...

• Replies: 2
• Views: 2,095
02-23-2009, 05:56 AM
16. 2-way ANOVA, kinda sorta maybe?

I am looking at the changes in organism growth over 2 months with 2 pH values and 2 temperatures. Treatments First set of organisms: pH 7.3 and...

• Replies: 1
• Views: 882
05-07-2014, 02:12 AM
17. 2-way anova? 2 independent variables, each with only 2 levels

I'm confused as to whether I should do a t-test multiple times, or one-way ANOVA, or two-way. Would really appreciate any help! basically, there...

• Replies: 4
• Views: 1,575
02-16-2014, 05:57 PM
18. 2007, per capita, personal disposable income,

Hello, I'm a TalkStats newb, this is my first real post :) . I have a source (bea) for average 2007, per capita, personal disposable income...

• Replies: 4
• Views: 4,421
07-02-2008, 02:29 PM
19. 25th percentile of right-skewed and left-skewed distribution

Hi All, Is it possible to have two lists of numbers with the same number of elements and same average, where one has a left-skewed distribution and...

• Replies: 0
• Views: 1,193
03-19-2016, 04:52 PM
20. 2by2 ANOVA post-hoc correction?

I would like a second opinion on the claim that if you have a 2 by 2 ANOVA (2 factors, 2 levels each) then for pairwise comparisons (simple effects)...

• Replies: 2
• Views: 2,796
Cel
02-26-2008, 02:57 AM
21. 2D Conditional Probability

Question X, Y are two independent random variables with cumulative distribution functions: F_X(x) = {0, x<0; x/3, 0<x<3; 1, x > 3} F_Y(y) =...

• Replies: 2
• Views: 1,593
07-23-2014, 05:00 PM
22. 2IVs, multiple-levels; 1DV=frequency

EDIT: (in title I meant 2 IVs, not 2DVs!) - I fixed it for you - Dason Hi, I have a question: what test would be appropriate? IV = genotype,...

• Replies: 17
• Views: 4,320
11-18-2011, 03:49 PM
23. 2nd year biochemist in need of help!

hi there, I am a second year University student studying biochemistry, and i was hoping someone on here might be able to lend me a bit of a hand. I...

• Replies: 0
• Views: 2,124
04-11-2008, 03:41 PM
24. 2way anova problem

hello!!! im studying psychology and i have a problem in my dissertation.in my study i used 3x2 anova in order to examine the effect of colour...

• Replies: 3
• Views: 1,242
05-14-2013, 02:02 PM
25. 2x14 Chi Square Homogeneity Test Tool Needed

Hello, I need to run a Chi-squre homogeneity test for a 2x14 contingency table. The most rxc matrix tool I can find is a 10x10 at: ...

• Replies: 8
• Views: 6,528
12-09-2010, 09:11 AM
26. 2x2 Anova, im struggling to report the assumptions

Hello, I've ran a 2x2 anova and am trying to report the assumptions but would like to make sure ive done it correct, statistics is my weak point!...

• Replies: 3
• Views: 832
02-22-2016, 04:45 PM
27. 2x2 contigency table non-independent but not paired data

I am looking at male-biased sexual size dimorphism in a bird species (males average larger than females). I am interested in the proportion of males...

• Replies: 3
• Views: 1,303
06-24-2014, 08:10 AM
28. 2x2 mixed ANOVA interaction - do I analyse simple main effects?

I've conducted a 2x2 mixed factorial ANOVA: IV1 - repeated measures (control vs. experimental) IV2 - between groups (I counter-balanced the order...

• Replies: 0
• Views: 1,140
02-19-2016, 06:35 AM
29. 2x2 repeated measure ANOVA

Hi there, I have 2x2 factorial experiment within subject (repeated measures), I wonder if there is a rule of thumb that i can use to enter my IVs...

• Replies: 1
• Views: 2,471
12-21-2016, 04:29 PM
30. 2x2 Repeated Measures ANOVA

Hi Everyone! I am working on a 2x2 repeated measures ANOVA and I am having trouble finding much information about it. Basically I taught the same...

• Replies: 3
• Views: 7,339
09-03-2006, 07:11 AM
31. 2x2 repeated measures Anova or one way

I need help with the analysis of my latest experiment, I need to write it up by Mon so please help! I have two conditions with two different time...

• Replies: 0
• Views: 1,730
09-18-2015, 05:34 PM
32. 2x2 repeated measures factorial design for non parametric data?

Hi I have a 2x2 repeated measures factorial design, variables: (length- short/long, complexity- low/high) resulting in four conditions. I have four...

• Replies: 0
• Views: 3,465
07-08-2012, 06:12 AM
33. 2x2 Table of Counts Help! URGENT

I'm having trouble with my homework. The question is: FIV (feline immunodeficiency virus) attack's a cat's immune system causing feline AIDS. It...

• Replies: 1
• Views: 2,048
09-11-2011, 10:56 PM
34. 2x2 with structural zeroes?

Hi All, Sorry to bother you, but could anyone help with a question, please? Suppose I have N patients who tested positive for a condition and...

• Replies: 1
• Views: 2,636
07-11-2007, 12:51 PM
35. 2x3 factorial design

Hi, I need to analyse a 2x3 factorial design of an experimental group and a control group, doing 3 serial recall tests over time. so far I've used...

• Replies: 0
• Views: 2,407
04-04-2013, 01:31 PM
36. 3 Arm Study: Categorical Data needs a P-Value!

Hi, I conducted a 3 arm study and now I am trying to find signficance/lack of signififance. Some data I gathered, such as age was easy to...

• Replies: 3
• Views: 1,468
08-17-2013, 03:11 PM
37. 3 boxes with each 2 balls

• Replies: 0
• Views: 2,008
12-03-2011, 02:50 PM
38. 3 columns of categorical data - what test to use for significance?

Hi I did surveys on pre-teens, teens, 20s (3 "columns") and need to find signfifiance (p-value). What test do I use? I keep trying Chi square on...

• Replies: 4
• Views: 2,469
08-15-2013, 12:33 PM
39. 3 Factors (2 Fixed, 1 Random) - Selecting and applying the appropriate model

This is related to a homework question. I've had trouble finding info on models with 2 fixed and 1 random factor. Any input guiding me in the right...

• Replies: 1
• Views: 1,229
04-15-2014, 10:58 PM
40. 3 parameter distributions. pdfs?

Hi, this is my first post and this looks like the most appropriate place for it. I've used minitab to get the most appropriate distributions for...

• Replies: 2
• Views: 4,289
09-01-2007, 12:25 PM
41. [SOLVED] 3 things connected? Pairwise inappropriate, rejected variable, missing residuals

Hi all, I am trying to run a standard multiple regression with a variety of variables, some of them dummy coded. When I choose to deal with...

• Replies: 1
• Views: 1,387
03-12-2014, 11:46 PM
42. 3 values ordinal variable: Mann-Whitney or Chi-squared?

Hello, I have an ordinal variable which assumes only 3 values. I need to do a comparison between 2 treatments. I used Mann-Whitney test, since...

• Replies: 9
• Views: 2,260
02-18-2015, 05:46 AM
43. 3 variables, level of significance...help!

I'm having trouble with this problem. It's different from anything I've come across so far and I'm not sure how to begin. Here it is: John, Ken,...

• Replies: 1
• Views: 2,420
04-24-2007, 10:40 PM
44. 3 way ANOVA

Hi, is there anyone who could advise me about running and interpreting a 3 way ANOVA in SPSS. many thanks in advance, Mary-Jane

• Replies: 1
• Views: 2,533
08-06-2010, 11:50 AM
45. 3 way chi-square- help to simplify my analysis

Hello all, I believe this is a simple question, but I can't find any reference to it online. I have 3 groups (A,B,C). I want to know if the...

• Replies: 1
• Views: 3,953
04-14-2012, 12:39 PM
46. 3 way or 2 way ANOVA?

Hi everyone, So I'm currently completing my thesis for a BSc in Psychology and am having a nightmare trying to find help in the statistics end of...

• Replies: 3
• Views: 1,633
01-23-2014, 12:34 PM
47. 3 x 2 between-within factorial ANOVA

Hello: I am a novice researcher and have recently been conducting a study investigating the effect of resistance training on the peak running...

• Replies: 4
• Views: 6,205
04-17-2012, 10:39 AM
48. 3 x 2 Repeated measures ANOVA question

Hello, I'm doing a study in which I'm looking into the effects of three different repeated sprint training modes on performance, whilst also...

• Replies: 0
• Views: 1,015
04-06-2016, 02:41 PM
49. 3-data points and a t-test

For a while now I've been measuring "gloss" of a material. Each material sheet is about the size of a piece of paper and I've been wanting to know...

• Replies: 3
• Views: 3,279
06-10-2009, 01:29 PM
50. 3-option poll and significance

Is it possible to test for significance in this situation? As part of my summer internship required for school, I had to poll employees at the...

• Replies: 2
• Views: 2,693
06-25-2007, 01:05 PM
51. 3-Parameter Weibull Distribution

Nevermind. My exponent was in the wrong location.

• Replies: 0
• Views: 1,174
01-28-2013, 08:57 PM
52. 3-way anova containing 3 repeated measures variables (I think)

Looking at effect of drinking caffeine on memory. Two memory tests: one done without drinking caffeine, one done after drinking caffeine. All...

• Replies: 0
• Views: 3,917
04-02-2010, 04:29 AM
53. 3-way anova, following up 2-way interaction

I'm running a 3-way ANOVA. I have a non-significant 3-way interaction (axbxc), but one 2-way interaction is significant (axb), and all the main...

• Replies: 0
• Views: 3,840
03-15-2012, 07:03 PM
54. 3-way interaction: calculation of the SEb

Hello, Im working on the statistics of my thesis and I am afraid Im stuck. I conducted a regression analysis with three-way interaction and now I...

• Replies: 4
• Views: 8,155
08-10-2009, 01:22 AM

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