1. Announcement:
05-10-2017
Views:
1,942
Page 293 of 294 First ... 193 243 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 Last
Threads 17521 to 17580 of 17595

# 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: 197,217
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: 66,990
09-30-2005, 09:44 AM
1. ### [ASK] Measures of Central Tendency in Symmetrical Distribution

If a population's distributon is a symmetrical distribution, Does Mean, Median and Mode always has a same value? :confused: From what I know,...

• Replies: 1
• Views: 3,551
11-04-2010, 09:12 AM
2. ### [Basic Help] How to present statistical estimates like standard errors in general?

Could anyone tell me how to present statistical estimates for qualitative data in general? The following sampled data are given with weighting...

• Replies: 0
• Views: 1,294
07-15-2012, 06:54 AM
3. ### [chi-square test] Should I use a chi-square test or other test?

Hello guys, I'm analyzing the question: "Is Age a factor that influences having high blood pressure?" The survey was divided to age...

• Replies: 0
• Views: 1,029
09-19-2015, 04:37 AM
4. ### [chi-square test] Should I use a chi-square test or other test?

Hello guys, I'm analyzing the question: "Is Age a factor that influences having high blood pressure?" The survey was divided to age...

• Replies: 2
• Views: 1,253
09-19-2015, 03:21 PM
5. ### [Conjoint Analysis] Measuring (cognitive) cost functions instead of value functions?

Hello :wave:, usually one uses Conjoint Analysis, like in my case ACBC (Adaptive Choice Based Conjoint) in order to measure preferences and...

• Replies: 0
• Views: 1,385
11-06-2016, 04:58 AM
6. ### [Correlation Analysis] Information on entering and analyzing Likert-scale data

Hi, I am a Psychology student seeking advice for using SPSS (version 21). My research question is whether personality traits (extravertedness,...

• Replies: 4
• Views: 1,882
12-02-2014, 09:51 AM
7. ### [Diffiult problems] Extract meaningful information from a data set

This is a project for 10 minutes presentation and we need to find meaningful information from the data set shown as follows, ...

• Replies: 6
• Views: 3,638
11-30-2010, 09:51 PM
8. ### [Exact Multinomial Test] Chi square Goodness-of-fit with expected frequencies of 0

----------------

• Replies: 1
• Views: 2,119
11-07-2013, 12:13 AM
9. ### [Excel/SPSS] - How to compare group homogeneity (2 variables)

Hey dear forum members, it's my first time here, so a big hello to everyone reading this. First of all, I hope my headline gave you a clear idea...

• Replies: 5
• Views: 1,264
01-27-2016, 05:16 AM
10. ### [Excel] How to keep track of metrics

I have a data table with 3 Columns that I want to be able to measure the performance for. Ex. Number| Stage | Date/time 111111 ...

• Replies: 2
• Views: 2,713
07-01-2015, 03:23 PM
11. ### [Excel]Coming up with prime numbers

Hi guys, So I have two sets of data. Group A and Group B, 35 subjects in each group. I want to generate another set of data based on data in...

• Replies: 2
• Views: 2,580
09-15-2011, 06:11 PM
12. ### [FactorialANOVA] Which N to use when converting standard error to standard deviation?

When converting standard error to standard deviation (using the formula SD = SE x SRT of N), I am having trouble with is which N to use - the N of...

• Replies: 1
• Views: 897
02-17-2016, 05:30 AM
13. ### [HELP Self-learning] When use Z distribution and When T?

I really think Stats is not for dump gal like me... Finally I get some questions to test my understanding. Can some gurus see if I applied Z / T...

• Replies: 11
• Views: 3,858
11-04-2010, 07:30 PM
14. ### [SOLVED] [HELP] i need help with them plz

19. The weights of cats are normally distributed with a known standard deviation of 2 lb. If we take a sample of 64 cats and get a sample mean...

• Replies: 8
• Views: 2,427
12-24-2011, 10:48 AM
15. ### [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...

• Replies: 12
• Views: 2,634
BGM
11-27-2013, 12:41 AM

The given model is from Merrill and fox. The data are presented (table 3.1) are presented for demand and supply of meat in the united states for...

• Replies: 0
• Views: 809
05-13-2014, 11:09 PM
17. ### [Homework Question] Canonical Correlations (Dason)

This question appeared in my homework assignment. It comes from pg. 567 of Johnson & Wichern's Applied Multivariate Statistical Analysis (6th...

• Replies: 1
• Views: 2,975
10-26-2010, 04:03 PM
18. ### [HOMEWORK-USING R] Poisson Model using likelihood

Question :A well-known example involving the Poisson model was described by LJ Bortkiewickz (1868-1931). The data refer to the annual number of...

• Replies: 4
• Views: 1,515
08-27-2014, 10:35 AM
19. ### [Independent and Repeated T Tests] Choosing Best Design Methods

No feedback. Problem solved.

• Replies: 0
• Views: 1,346
12-09-2011, 10:52 PM

Hello, Two things: (1) I will be happy if someone could refer me to a link whether it is explained what an interaction is. (2) I was...

• Replies: 0
• Views: 1,371
05-29-2012, 11:06 AM
21. ### [JMP] Which test should I use? Comparing the fit between nominal variables

Hello, I have a data set of 136 participants. Each participant completed a drawing and a story. The drawings and stories are each rated twice, as...

• Replies: 2
• Views: 2,113
02-24-2013, 05:21 PM
22. ### [Meta-data analysis] Combining multiple correlations and p-values

Hi all, I have 4 correlation values (pearson's correlation coefficient) and their p-values from 4 identical experiments (just different subjects...

• Replies: 0
• Views: 1,714
06-05-2014, 02:23 AM
23. ### [Minitab] Sample size for nonparametric distributions

I have 4 years of atmospheric monitoring data which is lognormally distributed. I have run Kruskall-Wallis test on the data and established there is...

• Replies: 2
• Views: 3,079
09-06-2012, 05:31 PM
24. ### [Multivariate analysis] Interest in each response variable separately

Hei everyone I have a fully crossed experiment with three factors (Season, Infection, Starvation) and for each combination I measure gene...

• Replies: 0
• Views: 1,099
03-17-2015, 10:42 AM
25. ### [Multivariate analysis] MANOVA vs PCA vs LDA

Hi I have a little trouble deciding which test I use best for my data and was hoping you could help me a bit. I have four different classes of...

• Replies: 0
• Views: 2,856
08-26-2014, 12:36 AM
26. ### [need help] example Variogram in excel

Hi All ! im newbie here ^^ I need example of creating variogram in excel.. Any help is very welcome. Thanking in advance. Kind regards,...

• Replies: 1
• Views: 9,302
03-10-2011, 12:33 PM
27. ### [need help] Transformation for skewed distribution

I have 2 variables (n=5527). The 1st variable is positive skewed and the 2nd is negative skewed. I want to correlate those 2 variables. So the...

• Replies: 0
• Views: 2,821
09-22-2009, 09:18 AM
28. ### [newbie statistics question] High School Homework

• Replies: 3
• Views: 3,246
02-18-2011, 12:43 PM
29. ### [Ordinary Least Squares Regression By Hand] Explanation help needed

Hi, I'm working on a problem that requires doing OLS by hand. I have the answers but I'm trying to understand why it uses certain formulas, which...

• Replies: 3
• Views: 1,790
05-10-2013, 02:37 AM
30. ### [Paired T-Test] Assumptions & Violations

poor design methods

• Replies: 5
• Views: 4,893
12-07-2011, 02:50 AM

Hi everyone, I got a big problem with proving the lemma of checking independence for normal variable sample by merely checking the covariance, anyone...

• Replies: 0
• Views: 1,353
11-22-2014, 09:43 PM
32. ### [Post Hoc Tukey Repeated-Measures T-Test] Interpreting results & Confidence intervals

This has been solved using SPSS

• Replies: 0
• Views: 1,522
12-07-2011, 02:06 AM
33. ### [Prism 5] Gather or Individual Analysis? ANOVA or Kruskal?

To whom it may help: My research is on cellular/molecular responses after hormones farmacological administration and I'm not quite sure how to...

• Replies: 13
• Views: 2,229
08-28-2015, 08:49 AM
34. ### [question] wich program to make basic analysis?

Hi, my sister sell's cloths in internet, and she ask me if i can make a basic analysis of wich type of cloth she is selling better. some basic...

• Replies: 0
• Views: 2,082
09-22-2007, 01:59 PM
35. ### [Q] Confidence interval

If the question asks how to reduce the confidence interval to 0.2, does that mean zs/sqrt N = 0.1?

• Replies: 4
• Views: 3,014
11-14-2010, 09:02 PM
36. ### [R - Wilcoxon] Appropriateness of Wilcoxon test for tox data?

I have toxicity data (percent mortality) for a pesticide on a given organism. I want to compare the mortality at the end of 24 hr observation vs the...

• Replies: 0
• Views: 1,325
05-16-2013, 09:42 AM
37. ### [Relation of daily sales] Chi-Square, T-Test or Correlation?

Hello, Which to use to test whether Monday sales and sales on the other days of the week are independent from each other. Case: A promotion...

• Replies: 8
• Views: 1,473
mba
09-25-2012, 08:26 PM
38. ### [Reliability analysis\PCA] Calculate alpha for whole itemset or separate components?

Hi. I'm writing a report for class and need some help at the moment. I am studying the halo effect, I created a survey for three groups, number of...

• Replies: 0
• Views: 972
11-15-2013, 09:10 AM
39. ### [response set analysis] respondents unaware of negative formulated items

Hi I’m wondering what to do when negative items does not break response set. In other words, it remain unclear if respondent was where of the...

• Replies: 0
• Views: 1,846
06-23-2013, 10:58 AM
40. ### [R] Methods to determine reliability of measurements using median and median absolute

I have been looking for a solution to this problem for days, so I hope you can help me. I have several datasets containing hundreds of variables,...

• Replies: 0
• Views: 829
07-01-2014, 03:12 AM
41. ### [R] Nonparametric residuals for multiple regression. Timming, Bootstrapping, ranking?

Hi, I’ve been looking through the forum and Google, but I can’t find the answer. I’ll post my problem here. I got a dependent variable...

• Replies: 6
• Views: 1,361
05-22-2015, 10:34 PM
42. ### [R] Prevalence by site. Stuck after fisher.test and pairwise.t.test

Hi, I run into a problem I can't solve and I got stuck doing the pairwise.t.test. I'll try to give you as many details I could so maybe you can...

• Replies: 0
• Views: 1,015
06-01-2015, 08:46 AM
43. ### [Sample Test Question] Generalized and Total Variance

Here is a sample midterm question that the instructor provided: A colleague says that the "generalized variance", defined as the determinant of a...

• Replies: 0
• Views: 5,629
10-27-2010, 11:05 PM
44. ### [Sampling] Which type of sampling to use in this case

I would appreciate any help in this case took from a book (without answers and tips): Consider that a court wishes to evaluate the proportion of...

• Replies: 4
• Views: 1,197
04-11-2017, 11:42 AM
45. ### [Sincere] Likert Scale Problem

Hi, I am not a statistics student nor do i understand what can i derive from SPSS. But.. i seriously require help and am sincerely requesting...

• Replies: 1
• Views: 4,308
06-22-2010, 01:11 PM
46. ### [Solved] f(x) > 1 ???

I'm using kernal desnity estimation for the first time. I plotted the density that I got using R's density() function and noticed that portions of...

• Replies: 3
• Views: 2,839
10-21-2011, 10:11 PM
47. ### [Solved] How to graph a partial correlation?

Hi everyone, I would like to be able to make a graph for a partial correlation. Of course, to do so, I'll need the new X and Y values. I used SPSS...

• Replies: 5
• Views: 23,808
01-09-2011, 03:48 PM
48. ### [Solved] Problem with regards to Poisson! Need some help.

Provided information; No. of particles in sample / No. of samples 0 / 32 1 / 47 2 / 37 3 / 18 4 / 4 5 / 2

• Replies: 8
• Views: 6,265
01-09-2011, 08:55 PM
49. ### [Solved] Use mean or not?

Hi everbody, Here's probably a quite simple question but I just want to be sure before doing tests on it. I'm not sure if I have to take the...

• Replies: 2
• Views: 3,823
01-06-2011, 03:38 AM
50. ### [Sponsored]Statistical estimations with Finaquant Protos – free .net library with tab

Hello all, We would like to introduce our non-commercial software for students and academic staff: finaquant® protos - free .net library with...

• Replies: 0
• Views: 21,539
02-26-2013, 01:38 AM
51. ### [SPSS - Correlation] Correlation between binary variables?

Hi, I have a question about the limitation of a correlation. I'm using SPSS and have a lot of multiple choice questions with multiple answers...

• Replies: 2
• Views: 940
05-16-2017, 06:18 PM
52. ### [SPSS - Kaplan-Meier] show curves for all patients AND subgroups

In SPSS, is it possible to add the curve for all patients to a Kaplan-Meier plot which displays two subgroups? Another question: is there a...

• Replies: 0
• Views: 1,819
11-18-2015, 02:42 PM
53. ### [SPSS - nonparametric test] - which test should I use?

Hello! I want to compare two groups: green-wearers versus orange-wearers (DV) I have 20 subjects: 10 wore green, the other 10 orange. One...

• Replies: 0
• Views: 1,667
09-22-2014, 05:35 AM

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.

Note: when sorting by date, 'descending order' will show the newest results first.