1. Announcement:
05-10-2017
Views:
1,901
Page 5 of 294 First 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 55 105 ... Last
Threads 241 to 300 of 17594

# Forum: Statistics

Statistics course and homework discussion. Elementary statistics.

1. ### 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: 66,946
09-30-2005, 09:44 AM
2. ### 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: 197,161
07-16-2014, 11:01 AM
1. ### Likert Scale - Regression Analysis HELP!

I'm contemplating running a regression analysis on Likert scale constructs. My independent variable would be workspace and dependent variable would...

• Replies: 0
• Views: 3,486
03-28-2010, 06:36 PM

I don't know what I should be looking for to find/calculate factor loadings in Amos. Help!

• Replies: 0
• Views: 5,675
04-14-2010, 07:58 AM
3. ### Interpretation of an Interaction Variable in a Quadratic Regression

Hello everyone, this is my first post in this forum and I really hope you can help me with the interpretation of my data. I am currently writing...

• Replies: 0
• Views: 3,818
06-05-2011, 08:58 AM
4. ### Rasch Issue

I'm having some issues with a rasch analysis I'm doing. First off, I'm using the raschtest .ado in stata. I'm trying to reduce 50 items to about 20....

• Replies: 0
• Views: 2,433
04-05-2011, 11:16 AM
5. ### sigma level

OK, I need just a little help and all I can find are calculators that will do the work for me. Maybe I am not asking the correct questions. He is...

• Replies: 2
• Views: 1,904
09-10-2009, 03:16 AM
6. ### connection with distinguishable permutations

The answer I'm trying to figure out is for this question: Find the classical probability of getting a total of 12 when 5 balanced dice are rolled....

• Replies: 1
• Views: 2,415
10-13-2010, 11:57 PM
7. ### determining mean without Z score

Hello, Not looking for the answer, I've just got myself confused. The scenario I have is: I have been given the Standard deviation figure 14.62...

• Replies: 4
• Views: 2,910
05-22-2006, 09:02 PM
8. ### plz help me in solving these 2 probs

I have 2 problems as my assignement and i have to submit them within 5 hours please reply me plz plz plz PROBLEM 1 Muhammad Ali is famous in...

• Replies: 0
• Views: 2,303
03-23-2008, 08:53 AM
9. ### Needing some assistance with this problem (true proportion)

Here's the problem: A U.S. Travel Data Center's survey of 1500 adults found taht 42% of respondents stated that they favor historical sites as...

• Replies: 1
• Views: 5,903
10-07-2006, 08:41 AM
10. ### Joint Distribution

Hi everyone, I've got a problem with a joint probability density function question. Given f(x, y) = e^-(x+y), 0 <= x < ∞ , 0 <= y < ∞ , and...

• Replies: 0
• Views: 945
10-07-2015, 01:48 AM
11. ### Where can I find real data for ANOVA for a project?

Where can I find real data for ANOVA for a project? I have my semester project due soon and I need to get real life data to use for the analysis. I...

• Replies: 2
• Views: 1,499
10-19-2013, 06:51 AM
12. ### The test statistics for the treatment and staging of a disease

What is the test statistics that used to tell whether a particular treatment is effective in altering the staging of a particular disease, typically...

• Replies: 0
• Views: 1,187
07-13-2013, 03:13 PM
13. ### Which test can I use ?

I am doing an analysis for collected data of experimental designe using control group, but my participants in the pre-test group are not the same...

• Replies: 5
• Views: 1,757
02-18-2014, 01:38 PM
14. ### Metric to estimate the allowable error/noise in repeated measurments

Hello, I perform two measurements of a variable once a week and I measured a 10.5% difference from week 1 to week 2. How can I tell if the...

• Replies: 0
• Views: 1,227
06-12-2013, 07:24 PM
15. ### T-test and large but unequal sample sizes

Hi, I'm working with a very large data set and would like to compare two independent populations. For the first population, I have approximately...

• Replies: 2
• Views: 14,568
04-05-2011, 04:03 PM
16. ### Making claims about effect size

Hi, I'm working with a very large sample, and have realized that almost any blip in the data will register as p=0.000 due to the sample size. Of...

• Replies: 0
• Views: 2,723
04-06-2011, 10:46 AM
17. ### Null hypothesis question

Hi, I'm new here, so I hope someone can help. I've read to the point of numbness. Can anyone offer advice? I understand fully the concept of...

• Replies: 0
• Views: 1,721
04-09-2009, 07:03 PM
18. ### Order of Statistics - Joint Density Function

Hello, I have a problem that I just can't seem to solve. Suppose X1; X2; : : : ; Xn constitute a random sample of an in finite population with...

• Replies: 1
• Views: 5,063
BGM
12-08-2010, 01:53 AM
19. ### Help needed for spatial statistics - linearity problem

I am a final year Environmental Geoscience BSc student, currently engaged in a dissertation project on synsedimentary fracturing in carbonates. I...

• Replies: 0
• Views: 1,739
12-28-2006, 05:59 AM

ive been trying for a while and everytime i try to figure it out it seems like im lacking the sample size. Can someone please please please please...

• Replies: 2
• Views: 6,455
02-23-2008, 06:01 PM
21. ### Thanks for the last help!!! i figured it out! one more question please...

I think im supposed to use the anova test but are there any other similar examples i can look at?? The accompanying table shows the grades for...

• Replies: 1
• Views: 2,439
02-24-2008, 08:39 AM
22. ### Help

I'm taking Knowledge management class as part of my MBA , i have dataset of newspaper print depreciation (daily data from Jan. 2002 to Dec. 2009)...

• Replies: 2
• Views: 1,743
02-11-2010, 06:40 PM
23. ### Basic Statitics to Probability Problem

Hi all, I’m new to the site, and only have a very basic understanding of statistics and probability, so forgive me if this question sounds silly....

• Replies: 0
• Views: 1,081
07-18-2015, 11:28 PM
24. ### Calculating % Deviance Explained from JMP

Hello. I am hoping someone might be able to help me. I am interested in calculating the % deviance explained by several different models in the GLM...

• Replies: 0
• Views: 2,981
09-13-2008, 03:18 PM
25. ### Dummy Variables

I have a question regarding Dummy Variables.. Never been good at it.. Question is like this.. Create the dummy variable for Education Level. ...

• Replies: 0
• Views: 2,166
10-25-2012, 07:35 PM
26. ### Which analysis to use?

I work in advertising and it's been a few years since my last stats class (I took two in my undergrad). So, here's the setup: my company will be...

• Replies: 1
• Views: 1,999
02-26-2009, 03:33 AM
27. ### homogeneity of variance with a MANOVA: what test?

hello, i have to realize a MANOVA for my thesis and i would like to know how can i test if the variances are homogen? can i use levene's test like...

• Replies: 2
• Views: 6,492
06-25-2010, 09:05 AM
28. ### Correlation: yes or no?

Hey! Are two variables significantly positively correlated, if SPSS gives me the following Output: Correlation Coefficient: 0.085** Sig....

• Replies: 2
• Views: 3,179
07-14-2013, 08:37 PM
29. ### Normalizing short sample stats

Hi, I am trying to use previous game stats in NCAA basketball games, to predict future games all in the same season. By the end of the season,...

• Replies: 0
• Views: 2,468
01-22-2009, 09:50 AM
30. ### Having a hard time with hypothesis testing...

A group of 25 husbands and wives were chosen randomly. Each person was asked to indicate the most he or she would be willing to pay for a new car...

• Replies: 1
• Views: 3,539
11-05-2011, 04:52 PM
31. ### Mode, non-normal distribution and Chi square

Hello. I would greatly appreciate help from you guys, since I'm kind of stuck. I got the following question: If I have two non normal...

• Replies: 6
• Views: 4,979
02-04-2011, 10:02 PM
32. ### [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: 2,836
10-21-2011, 10:11 PM
33. ### Welch–Satterthwaite equation: proof or derivation?

Hi, I'm studying now the Welch's t-test in which we use the Welch–Satterthwaite equation to calculate the degrees of freedom of the approxiamate...

• Replies: 3
• Views: 109,307
07-18-2010, 01:19 PM
34. ### Cochran's theorem

Hi, I found once again a non proved important theorem, Cochran's theorem, in the introduction of ANOVA decomposition of the sum of squares...

• Replies: 3
• Views: 5,638
07-19-2010, 03:24 PM
35. ### a theorem about pôwer transformation

Hi, while studying on Montgomery's Design and Analysis of experiments, i saw a theorem without proof of which I don't find the correct references....

• Replies: 1
• Views: 82,891
08-09-2010, 03:11 PM
36. ### Discrete or Continuous?

Hello, I've got a question about the use of temperature as a factor in a two-factor design. Should it be treated as a continuous or discrete? ...

• Replies: 1
• Views: 2,905
12-10-2008, 01:24 AM
37. ### Spearman's rho or no? is one of my datasets non-monotonic?

Hi, I'm dyslexic with limited stat education (and the internet is not helping thus far) and I'm having horrible trouble understanding what tests I...

• Replies: 1
• Views: 1,465
08-13-2016, 09:18 AM
38. ### Proof for multiple regression R^2

Hi, I am trying to prove that R2 is the sample squared correlation of yhat and yi, preferably by SS decomposition. I only know how to prove this...

• Replies: 0
• Views: 4,382
aeb
10-21-2010, 01:48 AM
39. ### Is this integration right or wrong...yes or no?

I haven't had calc in a few years and it's not coming back very easily: Are either of these correct?

• Replies: 1
• Views: 2,766
10-24-2006, 06:25 AM
40. ### Problem involving stocks and upper limits

The scenario is as follows: If these criteria are met, the club will issue one new share at a price of \$1,000 for every two average attendees between...

• Replies: 0
• Views: 3,007
11-20-2010, 10:22 PM
41. ### Regression Help!!

I am doing some econometrics work aiming to build a good regression model and I was wondering is it possible to have a Lin-Log regression were only...

• Replies: 1
• Views: 1,346
04-28-2012, 08:02 PM
42. ### Polynomial regression help!

When performing a regression which includes a sqaure term what is it exactly that this term is showing for exmaple regressing price against weight...

• Replies: 0
• Views: 2,205
04-29-2012, 06:44 PM
43. ### Rating scales -- meaningful summary

What is the most meaningful analyses for rating scale (5 point) data? I want to compare attitudes before and after an intervention. I am using Calc...

• Replies: 0
• Views: 1,574
03-09-2012, 11:21 AM
44. ### Factor analysis question

I am working on a project where I need to write Business Requirements for how to take a raw data file, run factor analysis against it and then output...

• Replies: 5
• Views: 2,206
11-17-2011, 03:40 PM
45. ### I don't understand the results of my ANOVA

I have run general linear model (ANOVA) in SPSS to test whether habitat type (2 categories) and habitat disturbance (2 categories) have an effect on...

• Replies: 1
• Views: 1,075
04-30-2014, 03:39 PM
46. ### Stat101 y-intercept of regression line

Slope of regresson line is 1.4, the mean of x-values is 5.0, mean of y-values is 6.5. What is the y-intercept of regression line?

• Replies: 3
• Views: 19,129
09-09-2009, 11:29 AM
47. ### Stat101 expected value

Random sample of 200 people chosen and doy of week of birth is recorded. What is the expected value for the numbers of births for each day of the...

• Replies: 0
• Views: 1,735
09-09-2009, 08:12 AM
48. ### Stat101 Standard Deviation of sample mean

What is the SD of sample mean, given a population SDof 7.36 and a sample size of 30? I just need to verify that the formula is population...

• Replies: 1
• Views: 3,565
09-09-2009, 09:16 PM
49. ### Stat101 95% Confidence Interval

One compared the fertility rate of frogs in two ponds. Suppose p1 denotes fertility rate in Pond1 and p2 denotes fertiliity rate in Pond2. which of...

• Replies: 6
• Views: 2,644
09-11-2009, 07:59 AM
50. ### STAT101 Scatterplot quiz. Just need verification

A scatterplot is best used with which type of data analysis? Pearson r, one-way ANOVA, independent t-test, chi-square I picked pearson r because...

• Replies: 1
• Views: 2,614
09-10-2009, 05:58 PM
51. ### Overlapping error bars and p <0.05

Hi, I have a column chart which represents two means and their error bars (standard deviation), the two error bars overlap of about half of their...

• Replies: 4
• Views: 5,971
09-21-2011, 11:36 AM
52. ### Quick question on tukey's HSD

Using JMP If I run an ANOVA on ranked data (for Kruskal Wallis) and then perform Tukey's HSD, do I need to adjust alpha from 0.05? I have 4 groups....

• Replies: 0
• Views: 2,091
11-03-2010, 01:45 AM
53. ### How can I analyze data that is yes/no (I have it as 1/0)

-Hi, I have a 2x2 factorial ANOVA design. It has several variables measured, but the only one I can't figure out is the one for specimen movement. ...

• Replies: 11
• Views: 22,784
01-16-2011, 06:06 AM
54. ### ANOVA and ANCOVA help please

Hi, I am having problems with my ANCOVA. I have been asked to perform an ANCOVA on the data we have been given. Normally I'm okay with ANCOVAS.. but...

• Replies: 0
• Views: 1,954
04-13-2009, 11:40 PM
55. ### reporting correlations, APA format.

Hallo, I am trying to report my correlation statistics, but I can't remember if it is N-2 in the brackets or N-1. ie. r(n-?)= #, p < .05. I had a...

• Replies: 0
• Views: 6,008
04-14-2009, 09:19 PM
56. ### ANCOVA post hocs?

How do I do post hocs for ANCOVAs?

• Replies: 2
• Views: 4,223
04-18-2009, 01:23 PM
57. ### naming w/ factor analysis

Hallo, I am doing a factor analysis and have identified 2 factors but i don't know what to name them. The first 3 that correlate are french, german...

• Replies: 1
• Views: 2,411
04-25-2009, 04:44 AM
58. ### Question about Hazard Ratio Interpretation

Hi, all. I've done all the coding already for this, I just don't know how to interpret it. For an assignment, we were given this data taken from the...

• Replies: 2
• Views: 2,460
12-02-2013, 06:09 PM

Page 5 of 294 First 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 55 105 ... Last

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.