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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: 197,273
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: 67,035
09-30-2005, 09:44 AM
1. ### Analysing percentages

Hi, I'm a newbie to this forum and am not very statistically minded. I've been trying to work out what way to best analyse the data I will be...

• Replies: 1
• Views: 2,854
03-11-2009, 05:04 PM
2. ### Hypothesis Inquiry

I posted this under Discussion, but don't believe it should have gone there so I re-posted here....

• Replies: 2
• Views: 2,854
06-04-2009, 10:37 AM
3. ### Comparing means of two different excel datasets using SAS (how to merge?)

I have two different datasets. Need to compare dose in dataset1 to dose in dataset2 to find out if the difference is statistically significant. Both...

• Replies: 5
• Views: 2,854
02-12-2012, 02:12 PM
4. ### Calculating Probability from Mean and standard deviation

Hello, im having difficulty in solving the following problem, Could anyone please solve this. Lifts usually have signs indicating their maximum...

• Replies: 2
• Views: 2,854
05-06-2013, 01:32 PM
5. ### ANOVA help - comparing growth rates between groups with 3 replicates in each group

Hi I'm really pretty lost, statistics have never been my strong point. I need to test whether my growth rate differences between trees are...

• Replies: 1
• Views: 2,854
09-30-2014, 01:50 PM
6. ### Urgent help on simple problem!!

I don't know why, but I can't seem to get any suggestion on a solution to my simple problem when I search the web or look in my statistics books I...

• Replies: 2
• Views: 2,853
04-23-2007, 01:11 PM
7. ### big difference between sample sizes

I want to check if the making of calls is depending of several variables (e.g. number of individuals present, number of females, number of males)......

• Replies: 1
• Views: 2,853
10-18-2008, 07:39 AM
8. ### Meaning of this integral

What is the physical or statistical meaning of the following integral \int^{a}_{o} g(\vartheta) d(\vartheta) = \int^{\infty}_{a} g(\vartheta)...

• Replies: 0
• Views: 2,853
03-08-2009, 04:55 AM
9. ### ANCOVA question

Hi All ... Why is it that the corrected model in an ANCOVA has a different value than the DP for an ANOVA? (I just know that sounds stupid). ...

• Replies: 6
• Views: 2,853
07-20-2011, 12:27 PM
10. ### Find Outliers in Transaction Data

Hi folks, I'm looking for your opinions on the best way to solve a need I have for finding outliers in a set of data. A while ago I wrote a...

• Replies: 0
• Views: 2,853
DVC
09-11-2012, 02:23 PM
11. ### Help with a problem for hypothesis.

Hi everyone, I am new here. My name is Debbie, and need help working out a problem in which I have to come up with an hypothesis and show all steps...

• Replies: 1
• Views: 2,852
10-14-2008, 01:54 PM
12. ### How to use a Distance Matrix as an Independent Variable?

Hello, Let's say I have 100 locations. I know the distance between each location (i.e. distance matrix). How can I use the distance matrix (or...

• Replies: 9
• Views: 2,852
05-19-2011, 08:32 PM
13. ### skew and kurtosis on questionnaire

I am running a factor analysis on data collected for a Likert scale questionnaire (200 participants) and have found that SPSS shows that a majority...

• Replies: 1
• Views: 2,852
02-17-2014, 11:36 AM
14. ### Time series

I have a poverty dataset and I wish to forecast the poverty percentage of a place in the future. I only have 2 years = 2006 and 2012 data. Is time...

• Replies: 3
• Views: 2,852
12-12-2016, 11:45 PM
15. ### Ancova

Hey, I'm using a two-way ANCOVA for my statistics assignment, but I don't know how to determine whether its a 2x2 or 3x2 ANCOVA (there are two...

• Replies: 2
• Views: 2,851
09-27-2009, 11:51 AM
16. ### rejection region and p-value help

deleted .

• Replies: 0
• Views: 2,851
10-13-2009, 06:51 PM
17. ### Help! ANOA and parameter estimates

Hi I'm new to statistics, but have to take an advanced quant module as part of my research training. We've been set a research task to see...

• Replies: 0
• Views: 2,851
03-19-2010, 08:03 AM
18. ### Central areas

I'm so stuck on this question, its really starting to do my head in. I've listened to my recorded lectures on this topic about 8 times and gone over...

• Replies: 11
• Views: 2,851
09-10-2010, 09:27 PM
19. ### Regression coefficient for reference groups -- yay or nay?

Hi all, When I'm working on a variable with 5 different categories and one is the reference group in a logistic regression, I only have 4...

• Replies: 5
• Views: 2,851
12-01-2016, 10:01 PM
20. ### Geometric standard deviation

Hi, Can someone help? I'm trying to find a method to calculate geometric standard deviation. I thought you just took the natural log of your values...

• Replies: 0
• Views: 2,850
03-26-2008, 03:48 AM
21. ### Mauchly's Test of Sphericity

Hello I ran a repeated measures ANCOVA. However, Mauchly's Sphericity statistic was not defined as I had <2 levels. Thus, do I need to look at my...

• Replies: 0
• Views: 2,850
09-07-2011, 02:41 PM
22. ### Help Please Single Item Likert

Hi I have given 5 single item statements for folk to reply to such as: 1. I have faith in my country's politicians 2. I believe mionority groups...

• Replies: 1
• Views: 2,849
09-30-2007, 02:59 PM
23. ### Waht is the relationship between Q-value and t-values

I am just learning ANOVA, and i found that in the Tukey's procedure, Q-value is introduced(studentized range distribution). however when it refers to...

• Replies: 0
• Views: 2,849
05-19-2008, 04:33 PM
24. ### Problem with Meta-Analysis/Solution: Non-Parametric Test?

Hi everybody, I have the following problem/question: I researched the results of 10 independent surveys conducted in 3 different countries. All...

• Replies: 0
• Views: 2,849
03-19-2010, 08:09 AM
25. ### T Test using stata

hello, i am trying to compare means for different variables by different year groups, i was wondering whether the data i have used for the TTest has...

• Replies: 0
• Views: 2,849
03-19-2011, 06:49 PM
26. ### latent class

For a market research study I am using latent class. I want to find out what kind of things are important to different people. I will use regression....

• Replies: 1
• Views: 2,848
11-01-2006, 01:44 PM
27. ### Probit Model Question

I often work with time-series models and this is my first attempt at a probit model. I am working on a probit model for leveraged buy-out (LBO)...

• Replies: 0
• Views: 2,848
07-02-2007, 10:42 AM
28. ### Drunk Random Walk Stats HW

(c) A drunk performs a "random walk" over position 0;§1;§2;§3; : : : as follows: He starts at 0. He takes successive one-unit steps, going to the...

• Replies: 0
• Views: 2,848
12-13-2008, 11:57 PM
29. ### Change in monthly values at the annual time step

Greetings: I have 56 years of monthly hydroclimatological data. I have used the TREND toolkit ( http://toolkit.ewater.com.au/trend ) to examine...

• Replies: 1
• Views: 2,848
02-01-2010, 10:17 AM
30. ### ***Fun Challenge -- weighted average of global rankings***

Goal The goal is to create a weighted average of global rankings. Does not have to be perfectly accurate (if that was even possible). Specific...

• Replies: 2
• Views: 2,848
08-03-2011, 11:36 AM
31. ### Determining influence on test score

Hello, I'm trying to determine how some tasks (nominal, ordinal) on one test influence the total score of the test (ratio). As I searched, linear...

• Replies: 10
• Views: 2,848
08-01-2011, 10:08 AM
32. ### How to report dummy variables (logistic regression, SPSS)

I am trying to write up a logistic regression analysis into a table, but am confused with what to report. I have a categorical variable which has 3...

• Replies: 0
• Views: 2,848
12-20-2012, 01:52 PM
33. ### Factorization Theorem for Sufficient Statistic

Hi, I am working through a problem using the Fisher–Neyman factorization theorem. Show that \prod_{i=1}^{n}X_i and \sum_{i=1}^{n}X_i are...

• Replies: 6
• Views: 2,848
03-07-2013, 01:21 AM
34. ### test for trend across groups

Dear forum, I would be grateful for some help with a simple problem. I have some data arranged in 5 groups. Each group contains a single data...

• Replies: 3
• Views: 2,848
06-11-2013, 12:53 PM
35. ### Outliers and correlation

Hi all Im working on small size sample (17) . and need to do correlation for alot of prameters my questions is : -is removing the outliers is...

• Replies: 8
• Views: 2,848
08-02-2013, 06:08 AM
36. ### Ordinal Data!

Hi, I am looking for some guidance on what tests to use on some ordinal data I need to analyse. I have exam results of pupils (graded A, B, C, D,...

• Replies: 3
• Views: 2,847
08-28-2008, 05:27 AM
37. ### Help with really f***ed up factorial ANOVA needed

Hi I really hope someone can help me with this. The central analysis of the study i am working on is a factorial ANOVA (1 between subjects...

• Replies: 3
• Views: 2,847
07-28-2010, 05:09 AM

I would be so eternally greatful if somebody could please help me! I am doing my dissertation and have come to analysing my data using SPSS, and i am...

• Replies: 8
• Views: 2,846
02-09-2010, 06:04 PM

Hello I've produced a spreadsheet with the intention of forecasting the odds for soccer games in the Home,draw,away market (1X2). I produce...

• Replies: 2
• Views: 2,846
06-15-2010, 08:40 AM
40. ### Suppose that the first four numbers that where chosen are (3,4,10,11). What is the

the last number you should choose so that the mean is 7 and the median is 10? A. 5 B. 6 C. 7 D. 8 E. 9 F. 10 G. It is impossible to choose...

• Replies: 1
• Views: 2,846
BGM
01-12-2012, 02:37 AM
41. ### Permutational multivariate analysis of variance using distance dissimilarities

Hi, I'm wondering how can I perform a repeated measures permutational multivariate analysis of variance in Adonis (R)? Cheers.

• Replies: 0
• Views: 2,846
03-27-2012, 10:21 AM
42. ### statistics

I need help with this question please The Academy Awards for the Best Actress and Best Actor have been given every year since 1928. The ages of...

• Replies: 3
• Views: 2,846
10-03-2014, 07:56 PM
43. ### Implications of eliminating the middle option of a 5-point Likert

Hi all, Assuming I have data from a multi-item questionnaire, 5-point Likert. Raw scores have been converted into STEN and tabulated into norms....

• Replies: 3
• Views: 2,845
02-27-2008, 04:32 AM
44. ### Goodness of fit indices for comfirmatory factor analysis

I have carried out an exploratory and then a confirmatory factor analysis on a dataset. I need to report a Bentler's Comparative Fit Index (CFI) and...

• Replies: 0
• Views: 2,845
02-26-2009, 11:29 AM
45. ### Dependent Data?

I hope this is the appropriate forum for this: I would be very grateful if anyone were able to advise on this; my background in statistics is...

• Replies: 2
• Views: 2,845
07-31-2009, 06:52 PM
46. ### open output

is there a way i could open my spss tables with word?or excel? I dont have the software at home and I need the tables to do my assignment.

• Replies: 2
• Views: 2,845
Boa
05-31-2010, 08:33 PM
47. ### help with my statistics project!

Hi TalkStats! So im in AP Statistics for my senior year class and needless to say senioritis got a little too bad! I fell behind a bit in...

• Replies: 1
• Views: 2,845
06-03-2011, 11:39 AM
48. ### Q re Kappa statistic

I am trying to calculate inter-rater reliability scores for 10 survey questions-- most of which are binary (yes/no). The agreemeant level bettwen the...

• Replies: 2
• Views: 2,845
06-27-2011, 01:58 PM
49. ### Exponential Distribution Help Needed

Hello all. I am having trouble with the exponential distribution in general, but specifically on the following problems: 4.2.2) Suppose that you are...

• Replies: 2
• Views: 2,845
03-08-2013, 02:15 PM
50. ### Probability question- Help Im stuck

Question: A group of 100 people exhibited the following blood types: A20 B24 AB10 O46 If one person is selected at random, what is the probability...

• Replies: 1
• Views: 2,844
11-20-2008, 07:50 AM
51. ### What sort of data is this? In a pickle

Hi, sorry first of all if is could be suited more towards a different catagory. Basically ive done questionaire and one question is : 3....

• Replies: 13
• Views: 2,844
11-10-2011, 06:50 PM
52. ### Which stats test to use

Hello :) I am really rubbish at stats, so now in my 3rd year project I am totally lost. I was told I need to do multiple regression in SPSS,...

• Replies: 1
• Views: 2,843
02-21-2011, 04:10 AM
53. ### SEM: Latent variable variance

Hello everyone, it would be great if you could confirm whether I understood this or not. I'm having trouble applying SEM results to an agent-based...

• Replies: 0
• Views: 2,843
03-29-2012, 04:42 AM
54. ### A manual example of Moran's Local I (Outlier)

Dear forum, a question about spatial statistics: I am trying to uderstand exactly how the Local Moran's I equation works, the equation can be...

• Replies: 0
• Views: 2,843
10-23-2013, 07:54 AM
55. ### There are no valid cases for VAR when GRP = .. Statistics cannot be computed for this

When I perform a normality test for my variables using the grouping variable named "Group", I got a warning message telling me that there are values...

• Replies: 4
• Views: 2,843
11-01-2014, 04:00 PM
56. ### Simple effects to understand interaction between repeated variables in mixed ANOVA

Hi there, I am having problems with the statistical analysis for a linguistics paper I am writing. So this study is a mixed ANOVA design with 3...

• Replies: 0
• Views: 2,843
01-09-2017, 06:45 AM

Hi everyone, i hope you can help me try to make sense of this midterm review sheet. Data given with x("x-bar"), ("y-bar"), sx, sy and r. Sketch...

• Replies: 3
• Views: 2,842
10-23-2008, 08:42 PM

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