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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: 196,807
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: 66,786
09-30-2005, 09:44 AM
1. ### ANOVA table confusion - how is error estimate so large?

I am confused about the Adj. MS term in the model. The data for the dependent var. only has a range of 4.25 to 131.4, yet the estimate of error (Adj....

• Replies: 2
• Views: 3,244
08-05-2009, 06:01 AM
2. ### ANOVA table from KyPlot - What does it tell me?

Hello everyone, I've got the following data to evaluate: - there 8 groups, group A to group H - for each group, I have 3 samples - so a total...

• Replies: 0
• Views: 2,197
03-24-2013, 09:07 AM
3. ### ANOVA table, f ratio and mean squares

Hi, Here is my ANOVA table from a nested ANOVA, Treatment and year are fixed. ...

• Replies: 2
• Views: 17,020
07-30-2008, 03:36 AM
4. ### ANOVA terminology

I am reviewing for comps and I am confused about the difference between a factorial and crossed design. In both cases they appear to have each level...

• Replies: 9
• Views: 1,434
08-22-2012, 04:15 PM
5. ### ANOVA test

Hello, I need help with the ANOVA test. I want to compare the % change is weight between 4 groups, 6 objects in each group. I measured my...

• Replies: 2
• Views: 5,768
04-05-2011, 04:26 AM
6. ### ANOVA test noob (need help in a Project)

I am a graduate student who just did take one stat course in my undergraduate study, and this is the first time for me to have to use ANOVA table, my...

• Replies: 1
• Views: 2,755
03-26-2009, 03:46 PM
7. ### ANOVA Test requirements

I got a research article that I need to critically evaluate and I want to check whether the study meet the criteria for using ANOVA test (i.e....

• Replies: 2
• Views: 5,537
09-18-2015, 03:59 PM
8. ### ANOVA test results

I have carried out a two factor ANOVA with replication. The results show that there is no difference between rows or columns, but there is a...

• Replies: 2
• Views: 2,228
05-19-2011, 10:53 PM
9. ### ANOVA test Samples

When running a single factor ANOVA test, do the number of subjects, (sample sizes) have to be equal? Can one column have more data than the other...

• Replies: 5
• Views: 2,746
09-25-2014, 06:37 AM
10. ### ANOVA testing!

Your professor is interested in how to effectively teach statistics to undergraduates so he randomly selects 21 students from the undergraduate...

• Replies: 7
• Views: 4,571
11-15-2010, 09:25 PM
11. ### ANOVA type analysis with unknown weighting

Here's the problem I'm trying to solve... I am trying to measure the performance of a student in five categories. I give the student a test of...

• Replies: 0
• Views: 1,868
GSM
02-25-2008, 02:17 PM
12. ### ANOVA using time variables

I am trying to find the difference between 3 groups to determine if the times between authorization to an event is different (longer, shorter). They...

• Replies: 1
• Views: 1,113
02-15-2016, 07:43 PM
13. ### ANOVA versus Multiple T-Tests?

Maybe someone here clear up some confusion I'm having about ANOVAs and T-Tests.... If you have three or more groups of data being compared to a...

• Replies: 1
• Views: 5,178
01-06-2009, 01:54 AM
14. ### ANOVA versus t tests

I am analyzing data from a 2x2x2 mixed factorial design with A and B being the within-subject factors. More specifically, B is the time of testing,...

• Replies: 0
• Views: 2,738
04-07-2009, 11:23 AM
15. ### anova vs wilcoxon

hi guys! i'm relatively new to statistics, but i'm picking up some of the basics. i was conducting a research on the effect of nicotine gum on...

• Replies: 3
• Views: 4,437
11-30-2013, 06:38 AM
16. ### ANOVA vs. MANOVA

Can you provide a good example that can describe the differences between ANOVA vs. MANOVA? I know the primary differences is that MANOVA involves...

• Replies: 1
• Views: 3,307
10-02-2006, 05:47 PM
17. ### ANOVA vs. t-test

Dear Stats talkers, What's your answer to the question when to use a t-test vs. analysis of variance? Could you also give an example case for...

• Replies: 2
• Views: 6,864
01-17-2007, 07:26 AM
18. ### Anova with non-normal data!

Hello guys, I did an ANOVA for my data -- 1 dependent variable with 4 independent variables -- but after doing that, I decided to check the...

• Replies: 2
• Views: 4,854
11-23-2011, 08:57 AM
19. ### ANOVA with only some levels of a factor?

I have run an experiment which had a within-subjects factor of sentence type, with 5 types of sentences, and a between-subjects factor of test...

• Replies: 0
• Views: 2,536
03-23-2008, 06:46 AM
20. ### ANOVA with percentages

Hello -- I'm looking for some guidance on how to make my percentage data appropriate for ANOVA. Here is what I have: The dependent variable is a...

• Replies: 10
• Views: 12,004
01-13-2013, 02:20 PM
21. ### ANOVA with repeated measurement: multivariate tests; MANOVA for repeated measures

Hello everyone I need help with my analysis of variance with repeated measurement. I did a study where I measured 6 values of every participant...

• Replies: 0
• Views: 946
08-05-2014, 07:56 AM
22. ### ANOVA with unequal sample sizes

hello, I have a question about ANOVA. This is the output I received when testing the effect of 'opnop' on mmse1. opnop is divided in 4 groups,...

• Replies: 1
• Views: 13,673
02-01-2008, 02:54 PM
23. ### ANOVA's

Is it possible for someone to tell me how to do them?

• Replies: 2
• Views: 3,382
10-17-2005, 09:48 PM
24. ### ANOVA's normality assumptions

Hi, I heard that F-tests work well with data that aren't normally distributed, currently with my ANOVA, the data does not have normal...

• Replies: 3
• Views: 2,978
04-20-2009, 07:16 AM
25. ### ANOVA, assumptions mandatory?

So on numerous websites, which of course we can trust completely ;) I've run across arguments that the normality and homogeneity assumptions for...

• Replies: 13
• Views: 10,358
09-12-2008, 07:44 AM
26. ### ANOVA, General Linear Model, Repeated Measures

Hi, i am completing my dissertation on the effects of the colours used in advertising logos with respect to gender. I have done some research and...

• Replies: 0
• Views: 2,143
05-07-2011, 08:04 AM
27. ### anova, Tukey post test, t test

HI all, and thanks in advance for any help you can give. I am analysing data coming out of genetic studies and have 5 groups to compare...

• Replies: 2
• Views: 13,794
08-04-2009, 12:05 PM
28. ### anova,battery of t-tests or something else?

Dear members, I would like to kindly ask for help with the following problem. I have toxicity measurement on logscale for 50+ objects which belong...

• Replies: 0
• Views: 1,990
09-28-2008, 08:16 PM
29. ### Anova. Please I need help

Hello, I'd be grateful if you can help me. I've not come from a Maths background but I must use it in statistics calculations. I was given...

• Replies: 3
• Views: 2,199
07-14-2010, 07:40 AM
30. ### ANOVA/ANCOVA/Regression

question : The linkage between "self learning" and "work efficiency" differs between women and men can be determined by : a. two-way ANOVA....

• Replies: 6
• Views: 3,380
02-08-2009, 10:24 AM
31. ### ANOVA/General Linear Model Confusion

I'm just trying to understand a few things. Although I have "done" a lot of practical statistics I've never really taken beyond the most basic...

• Replies: 4
• Views: 4,424
01-14-2011, 01:57 PM
32. ### ANOVA/Regression

Hi all, First timer here. I am hoping this is the right forum and that someone could point me in the right direction. I am analyzing a dataset...

• Replies: 7
• Views: 2,156
03-02-2014, 01:41 PM
33. ### ANOVA/Ttest for means of means

Hi, I am trying to run stats for some data that are means of means (ie. there are 10 points of data at each site and the mean is taken, then the...

• Replies: 3
• Views: 5,033
07-27-2010, 09:52 PM
34. ### ANOVA: Post-hoc tests

I have run a RM ANOVA on data from a study that had two independent variables: group (age groups, of which there are 4), and type sentence type (of...

• Replies: 0
• Views: 802
12-30-2013, 03:50 PM
35. ### ANOVA: subjects as a factor

Hi, I recently was asked the disadvantages of using subjects as a factor in an ANOVA with regard to generalising to the population. Is it that...

• Replies: 0
• Views: 2,421
08-13-2007, 10:07 AM
36. ### ANOVA? how?

hi all, this is fairly elementary, though would appreciate any help: suppose I have 3 store locations that carry identical number of product types...

• Replies: 3
• Views: 1,378
12-20-2012, 06:24 PM
37. ### ANOVA? Looking at percentage habitat use (6 different habitats) across four seasons

Hi, I am trying to look at whether habitat use of 6 different habitat types differs across 4 seasons. I have managed to run ANOVA tests but I'm...

• Replies: 1
• Views: 854
05-11-2017, 02:16 PM
38. ### Anova? Manova? multiple T-tests? (newbie question warning)

Hello all I have study data to analyze, and my normal stats guru is out of town. The study (some facts altered to protect the innocent) goes...

• Replies: 2
• Views: 1,648
06-04-2013, 04:49 AM
39. ### ANOVAs with different cell sizes

Hi, I ran a 5(identity style) X 2(experimental condition) ANOVA but it turns out my counts for each type of identity style are nowhere near equal....

• Replies: 0
• Views: 2,281
05-08-2009, 02:00 PM
40. ### ANSI/ASQC Q3 - determine sample size?

Hello, I have been required to determine the sample size and risk using ANSI/ASQC Q3 tables. This is to come up with samples to inspect...

• Replies: 0
• Views: 3,437
03-29-2011, 03:06 PM
41. ### Any Assistance Is Appreciated

The Manager wants to use a new tutorial to teach the students about business ethics.* As an experiment he randomly selected 15 students and randomly...

• Replies: 6
• Views: 3,386
06-07-2009, 04:19 PM
42. ### any automatic way to delete data

I have downloaded data in Microsoft Excel format. I need to delete some rows because there are not data in these rows. I can delete them manually....

• Replies: 3
• Views: 2,209
04-10-2012, 12:28 AM
43. ### Any clues on how many combinations there are here?

Laura is training for a week-long mountain cycling tour. She has 12 short hilly routes from which to choose mid-week rides. a) How many ways...

• Replies: 1
• Views: 1,674
08-06-2007, 01:48 PM
44. ### any clues on this one?

Let x be a random variable that represents the length of time it takes a student to write a term paper for Dr. Adam's Sociology class. After...

• Replies: 0
• Views: 1,819
08-06-2007, 05:36 PM
45. ### any guidance on this problem would be great!

Roger has read a report that the weights of adult mail Siberian tigers have a distribution which is approximately normal with mean μ = 390 lb and σ =...

• Replies: 1
• Views: 2,408
07-31-2007, 08:30 PM
46. ### any help greatly appreciated

In January 1993 15% of Irish manufacturers felt we were “well into recovery” ,42% felt we had “just started a recovery” 40% felt we were “still in a...

• Replies: 1
• Views: 2,748
10-17-2008, 02:46 AM
47. ### Any help on solving this one?

You roll two fair dice, one red and one green. a) What is the probability of getting a number less than 5 on both? b) What is the probability...

• Replies: 1
• Views: 2,204
08-06-2007, 05:33 PM
48. ### any help on this probability?

Richard has just been given a ten-question multiple choice test in his history class. Each question has five answers only one of which is correct. ...

• Replies: 1
• Views: 2,027
08-09-2007, 05:49 PM
49. ### Any help on this would be great!

Long-term history has shown that 65% of all elected offices in a rural county have been won by Republican candidates. This year there are 5 offices...

• Replies: 0
• Views: 2,187
08-06-2007, 05:34 PM
50. ### any help on this would be great!

Let x be a random variable that represents the length of time it takes a student to write a term paper for Dr. Adam's Sociology class. After...

• Replies: 0
• Views: 2,152
08-07-2007, 05:28 AM
51. ### Any help would be greatly appreciated

I am desperate for help as my dissertation has to be handed in very soon and i am totally baffled with the data analysis section. I have carried...

• Replies: 3
• Views: 3,092
01-03-2007, 05:58 AM
52. ### Any ideas on where to start on converting these to a standard z score?

Lewis earned 85 on his biology midterm and 81 on his history midterm. In the biology class the mean score was 79 with standard deviation 5. In the...

• Replies: 1
• Views: 2,746
07-30-2007, 06:56 PM

Hi, I would appreciate any input regarding this problem: I showed my effort under each question A college professor found herself assigned to a...

• Replies: 1
• Views: 2,779
06-16-2008, 01:42 AM
54. ### Any One Can Tell Me Desirable Properties of Interval Estimation ?????

• Replies: 8
• Views: 1,428
11-21-2013, 11:48 AM
55. ### Any R experts? Problem here

OK, so I've looked and looked at the help on R, but I can't find a method for solving this. I have some electoral data, including the Polling...

• Replies: 0
• Views: 2,149
01-10-2007, 11:08 AM
56. ### Any Suggestions A Good Discussion Topic For An Online Intro Statistics Course

I'm teaching an online Intro Statistics Course for the first time. This week my Discussion Forum Topic is "How will Statistics be important in the...

• Replies: 0
• Views: 1,532
02-02-2016, 05:36 PM

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