1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    1,882
+ Post New Thread
Page 282 of 294 FirstFirst ... 182 232 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 LastLast
Threads 16861 to 16920 of 17592

Forum: Statistics

Statistics course and homework discussion. Elementary statistics.

  1. Sticky Thread 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...

    Started by TheEcologist‎, 11-27-2010 12:13 PM
    • Replies: 1
    • Views: 197,032
    07-16-2014, 11:01 AM Go to last post
  2. Arrow Sticky Thread 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)...

    Started by quark‎, 09-30-2005 09:44 AM
    • Replies: 0
    • Views: 66,893
    09-30-2005, 09:44 AM Go to last post
  1. 95% confidence interval help

    How much money does the average professional football fan spend on food at a single football game? That question was posed to ten randomly selected...

    Started by sinful‎, 10-25-2006 04:50 PM
    • Replies: 8
    • Views: 9,148
    10-25-2006, 09:36 PM Go to last post
  2. trending method for count data

    Does anyone have a suggestion on a charting/trending method for count data? I have reason to believe my data is not Poisson distributed because in...

    Started by statgirl26‎, 10-25-2006 11:12 AM
    • Replies: 1
    • Views: 2,170
    10-25-2006, 08:47 PM Go to last post
  3. Post Please help

    My question is about z scores. To calculate probablity in a normal distribution, where we know mean and standard deviation we calculate z and then...

    Started by e09pka‎, 10-25-2006 11:22 AM
    • Replies: 1
    • Views: 2,310
    10-25-2006, 08:46 PM Go to last post
  4. Normal Distribution

    A set of reading scores for fourth-grade children has a mean of 25 and a standard deviation of 5. A set of scores for sixth-grade children has a mean...

    Started by Amanda8991‎, 10-25-2006 11:54 AM
    • Replies: 1
    • Views: 5,006
    10-25-2006, 08:44 PM Go to last post
  5. Z-Statistic and proportion

    Hi:) , I'm having some difficulty with this question. The question asks A matched pairs experiment compares the taste of instant versus...

    Started by jena2007‎, 10-25-2006 08:35 PM
    • Replies: 1
    • Views: 6,630
    10-25-2006, 08:39 PM Go to last post
  6. t tests

    Hello... t tests (like one sample, related samples, and independent) are just testing the mean of the samples means against the population mean,...

    Started by Christy‎, 10-22-2006 05:25 PM
    • Replies: 2
    • Views: 3,047
    10-24-2006, 06:31 PM Go to last post
  7. Help with null hypothesis and T-Statistics

    Hi:) , I'm having problems understanding null hypothesis and t-statistics. Especially this question(below): 12. You will have complete sales...

    Started by jena2007‎, 10-16-2006 09:37 PM
    • Replies: 4
    • Views: 5,743
    10-24-2006, 06:30 PM Go to last post
  8. Red face What test to use for comparing strengths of relationship

    I would like to compare the strength of one independent variable (A) on two separate dependent variables (B and C). That is, I would like to know...

    Started by sophie3173‎, 10-24-2006 05:49 PM
    • Replies: 0
    • Views: 2,345
    10-24-2006, 05:49 PM Go to last post
  9. 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?

    Started by Aegis‎, 10-24-2006 05:12 AM
    • Replies: 1
    • Views: 2,755
    10-24-2006, 06:25 AM Go to last post
  10. Posted in wrong thread i think ill try here

    OK ive been up all night its 3:02 AM here I cant get this one question: barry bonds of the san francisco giants had the highest batting average in...

    Started by piro829‎, 10-24-2006 01:59 AM
    • Replies: 1
    • Views: 4,571
    10-24-2006, 02:07 AM Go to last post
  11. Post In Desperate Need Of Help! Midterm Due Tomorrow

    Hey, I am a first time user so I have not had time to browse other threads or anything. Anyways, I am in dire need of help, as I have a midterm due...

    Started by youcantkillaliar‎, 10-24-2006 12:27 AM
    • Replies: 0
    • Views: 2,584
    10-24-2006, 12:27 AM Go to last post
  12. Newbies Question

    Is there a way that statistically you can determine the cut-off point. Ex. I have a large data set looks like this ( millions of records): Code ...

    Started by jimmy23‎, 10-23-2006 08:15 PM
    • Replies: 0
    • Views: 1,981
    10-23-2006, 08:15 PM Go to last post
  13. How to prove an exponential function?

    hi! My problem is that i have a large sequence of inter-arrival times and i want to know how can i prove that they are indeed exponential? i draw...

    Started by oxinosch‎, 10-23-2006 09:09 AM
    • Replies: 2
    • Views: 4,830
    10-23-2006, 07:05 PM Go to last post
  14. Mean

    The lifetimes of interactive computer chips produced by a certain manufacturer are normally distrubuted with aprameters u = 1.4 x 10^6 hours and ro =...

    Started by teacher2be‎, 10-23-2006 06:05 PM
    • Replies: 1
    • Views: 2,807
    10-23-2006, 07:00 PM Go to last post
  15. Unhappy Lost in stats!

    The amount of time one spends in a bank is exponentially distributed with mean 10 minutes. a.) What is the probability that a customer...

    Started by teacher2be‎, 10-23-2006 05:53 PM
    • Replies: 0
    • Views: 1,718
    10-23-2006, 05:53 PM Go to last post
  16. E(X)===> Help with Expectation problem

    Assume the length X in minutes of a particular type of telephone conversation is random variable with probability density function f(x)={1/5...

    Started by snthorne‎, 10-20-2006 12:36 PM
    • Replies: 2
    • Views: 5,095
    10-23-2006, 04:57 PM Go to last post
  17. Log transform

    Hi, When should I transform my data into log? Thanks!

    Started by Sphaero‎, 10-21-2006 11:10 AM
    • Replies: 2
    • Views: 4,259
    10-23-2006, 04:46 PM Go to last post
  18. Question Greenhouse-Geisser and effect size

    Hi, The data I am currently looking at is from a 2-way repeated measures ANOVA. My question is what do you recommend for a measure of effect size...

    Started by srf99‎, 10-23-2006 01:49 PM
    • Replies: 0
    • Views: 4,042
    10-23-2006, 01:49 PM Go to last post
  19. Nominal data - how thick am I?!!!

    Help needed!!! I'm currently completing my dissertation on sustainable procurement - looking at the buying practices of staff and suppliers to my...

    Started by Ali‎, 10-23-2006 10:59 AM
    • Replies: 0
    • Views: 2,644
    10-23-2006, 10:59 AM Go to last post
  20. Red face Reporting Means

    If n=149 and you have one case each for a few of the outcomes with an exceptional result, do the single cases get discussed in "results" for a...

    Started by kalbright36‎, 10-22-2006 01:53 AM
    • Replies: 0
    • Views: 2,099
    10-22-2006, 01:53 AM Go to last post
  21. How do I get either conditional or joint probabilities if I'm given the prior...

    How do I get either the conditional and joint probabilities if I'm given the prior and posterior probabilities. I'm doing a decision analysis that...

    Started by Emawk‎, 10-20-2006 04:34 AM
    • Replies: 2
    • Views: 2,363
    10-21-2006, 01:24 PM Go to last post
  22. Exclamation Have I chosen the right analysis?

    I am analysing changes that happened in a merger. It is an archival study utilizing survey data. I have a set of 9 survey items (5 pt scale) that I...

    Started by CFairbank‎, 10-21-2006 12:25 PM
    • Replies: 0
    • Views: 1,672
    10-21-2006, 12:25 PM Go to last post
  23. How do I explain this to other students?

    This is a problem that a student I am tutoring brought to me and I am not sure how to solve it or explain it to him, can you give me any suggestions?...

    Started by teacher2be‎, 10-17-2006 07:48 AM
    • Replies: 1
    • Views: 2,759
    10-21-2006, 10:49 AM Go to last post
  24. density function

    I am struggling with density functions. Can you help with this? Let Y have the density function given by .4, ...

    Started by teacher2be‎, 10-16-2006 05:41 PM
    • Replies: 1
    • Views: 7,205
    10-20-2006, 07:50 AM Go to last post
  25. mean or median for presenting statistics

    I am currently writing a paper and I am in a dilemma about which statistics to use when I present the descriptive data. Some of the data is normally...

    Started by Drkmfh‎, 10-18-2006 06:21 AM
    • Replies: 3
    • Views: 2,495
    10-20-2006, 07:43 AM Go to last post
  26. Question Beginner needs help

    Question on my first assignment in statistics: The adjacent data summarize daily absences for an assembly plant. The HR director wonders if absence...

    Started by mbrother11‎, 10-13-2006 10:59 PM
    • Replies: 4
    • Views: 3,273
    10-19-2006, 11:06 PM Go to last post
  27. How to start - analyzing - Plizzzzz Help really needed

    :confused: :confused: Hi. I'm lost in statistics: Is a two factorial design. I have two treatments and a control. :confused: One factor is...

    Started by pink‎, 10-19-2006 05:08 PM
    • Replies: 0
    • Views: 1,636
    10-19-2006, 05:08 PM Go to last post
  28. Exclamation Joint Probability Function HELP!!!

    Let the joint density function of X and Ybe given by: f(x)={kxy^2 for 0<x<y<1 {0 otherwise what is the value of k? Can...

    Started by snthorne‎, 10-18-2006 07:20 PM
    • Replies: 1
    • Views: 2,689
    10-19-2006, 11:54 AM Go to last post
  29. Which test: binary dependent, ordinal independent

    Dear Colleagues, Which test do I use when I have a binary dependent variable (Join a company or not join) and an ordinal independent variable...

    Started by dave‎, 10-19-2006 04:41 AM
    • Replies: 0
    • Views: 3,515
    10-19-2006, 04:41 AM Go to last post
  30. Explaining Statistical conclusions--confidence intervals

    I am having a problem explaining what exactly the confidence interval gives me.....for example, If you say that "I am 95% confident that the...

    Started by reretriple2‎, 10-17-2006 10:23 PM
    • Replies: 1
    • Views: 2,735
    10-18-2006, 06:18 AM Go to last post
  31. Do I have to Normalise & Standardise?

    Hi Everyone :wave: new here (and new to stats so bear with me!) Here is my task (in brief). I have 600,000 call records, each with an age and...

    Started by Maz‎, 10-10-2006 10:18 AM
    • Replies: 1
    • Views: 2,628
    10-18-2006, 06:17 AM Go to last post
  32. please help me I'm not sure what I"m supposed to do here?

    Okay here is the questions Refer to table 3 in the article and focus on the row " Perceptions of parent efficacy". Explain the meaning of each...

    Started by dana82‎, 10-17-2006 04:56 PM
    • Replies: 0
    • Views: 1,637
    10-17-2006, 04:56 PM Go to last post
  33. Cool Help!!

    Hi everyone, any ideas on how to prove the following? I am nearly there but can't get it right, any help would be greatly appreciated. Many thanks ...

    Started by gem_150‎, 10-17-2006 08:57 AM
    • Replies: 0
    • Views: 1,424
    10-17-2006, 08:57 AM Go to last post
  34. mean/variance

    Scores on an examination are normally distributed with mean 75 and variance 22. a. What is the probability that a student scores 70 or higher?...

    Started by teacher2be‎, 10-16-2006 07:51 PM
    • Replies: 2
    • Views: 2,016
    10-17-2006, 07:44 AM Go to last post
  35. Confidence level 99%

    Hi, I just getting confused by these two questions below. In the survey described in the previous exercise, there were 1050 borrowers whose...

    Started by jena2007‎, 10-10-2006 12:13 AM
    • Replies: 1
    • Views: 4,283
    10-16-2006, 09:40 PM Go to last post
  36. Expected Value and Standard Dev.

    I need some guidance with the following...please help!! Scenario: You pay $10 and roll a die. If you get a 6, you win $50. If not, you get to...

    Started by HuskerJay‎, 10-16-2006 06:15 PM
    • Replies: 0
    • Views: 7,265
    10-16-2006, 06:15 PM Go to last post
  37. I need help!

    Hi everyone, Here is my situation: I have never in my life taken a statistics course. I have an exam for a position with the state of CA on 10/18....

    Started by Andrew‎, 10-16-2006 03:53 PM
    • Replies: 0
    • Views: 1,859
    10-16-2006, 03:53 PM Go to last post
  38. Question Question about Significance in a binary system

    I do not have an extensive stistics background, but do have a better than average mathematical background. My question is regarding a binary system...

    Started by lid73‎, 10-12-2006 04:41 PM
    • Replies: 1
    • Views: 2,257
    10-16-2006, 02:39 PM Go to last post
  39. I need help with stats

    I have couple of questions that I don't know how to answer. how the standard error of the mean is calculated. Is the standard error of the mean...

    Started by Jessie‎, 10-13-2006 01:06 PM
    • Replies: 1
    • Views: 3,853
    10-16-2006, 11:33 AM Go to last post
  40. Determining modality

    Hello, I have a large number of spectra with gaussian-distributed noise superimposed on to it. There are large parts of the spectra where we know...

    Started by brummiejim‎, 10-16-2006 11:13 AM
    • Replies: 0
    • Views: 2,867
    10-16-2006, 11:13 AM Go to last post
  41. Determining a covariance matrix

    :confused: Let Sigma be an m x m matirx given by sigma = theta^2 *..... | 1 p p ......p | | p 1 p...

    Started by utsahalfpint‎, 10-15-2006 12:20 PM
    • Replies: 0
    • Views: 2,616
    10-15-2006, 12:20 PM Go to last post
  42. how to interpret the sign of a t-value

    Hi, If you did a t-test against the null hypothesis involving the beta coefficients from a multilinear regression, how would you interpet the sign...

    Started by nymphnode‎, 10-15-2006 08:28 AM
    • Replies: 0
    • Views: 5,618
    10-15-2006, 08:28 AM Go to last post
  43. Chi-squared test

    Hi, I think I'm right in thinking I should use a chi-squared contingency table test here because the data is nominal, but it seems to over-simplify...

    Started by gem‎, 10-13-2006 10:16 AM
    • Replies: 3
    • Views: 2,942
    10-15-2006, 01:01 AM Go to last post
  44. Probability help

    I'm trying to set up a probability analysis to determine if a recall is necessary. We found one of our 13 machines started to break down fairly...

    Started by allskewedup‎, 10-13-2006 11:53 AM
    • Replies: 0
    • Views: 1,833
    10-13-2006, 11:53 AM Go to last post
  45. How to interpret Tukey's b

    I was wondering if anyone could assist me on how to interpret my Tukey's b results. I need to indicate which clusters differ significantly from...

    Started by Pieterg‎, 10-12-2006 11:10 AM
    • Replies: 0
    • Views: 7,298
    10-12-2006, 11:10 AM Go to last post
  46. Samping distribution question

    Hello, I am doing work on sampling distributions however I do not understand these questions or what I am supposed to do, if someone could clear it...

    Started by Quantum Bit‎, 10-12-2006 10:07 AM
    • Replies: 0
    • Views: 2,397
    10-12-2006, 10:07 AM Go to last post
  47. Which tests should I use - please help

    Hello. First-time poster here. I've been having trouble trying to figure out how to analyze some data, and I would really appreciate some help. ...

    Started by aroussin‎, 10-11-2006 01:53 PM
    • Replies: 0
    • Views: 1,918
    10-11-2006, 01:53 PM Go to last post
  48. Badly need assistancr L Regression

    Dear JohnM, It looks everything is falling on you. I badly need assistance on this issue which I am putting up for the third time. Please help out....

    Started by dave‎, 10-10-2006 10:25 AM
    • Replies: 0
    • Views: 1,772
    10-10-2006, 10:25 AM Go to last post
  49. Wink Unbalanced Data Designs

    I have four sampling groups with the following sample sizes for each N=201,120,10,40 Question (1) I need to run an ANOVA to determine each groups...

    Started by lstanley‎, 10-08-2006 09:37 PM
    • Replies: 1
    • Views: 4,488
    10-09-2006, 09:08 PM Go to last post
  50. ANOVA help

    Hi All, I have to compute an ANOVA table by hand, and I've only been given total scores for each group, sample size for each group, and...

    Started by MdmeBtrfly‎, 10-09-2006 03:33 PM
    • Replies: 1
    • Views: 2,605
    10-09-2006, 08:52 PM Go to last post
  51. Repeated Measure on Categorical Data

    A group of subjects was tested and re-tested with the same set of measures over a 3-months interval. A total of three sets of scores were collected,...

    Started by Beyon‎, 10-09-2006 03:45 AM
    • Replies: 1
    • Views: 4,105
    10-09-2006, 08:39 PM Go to last post
  52. Help Please

    I have to produce stats for my manager on number of help desk calls fixed each month but the monthly average is inaccurate when compared to a whole...

    Started by simonw‎, 10-09-2006 05:49 AM
    • Replies: 1
    • Views: 2,354
    10-09-2006, 03:56 PM Go to last post
  53. clarification logistic regression

    Dear friends, I put this up some days back, but it seems to have missed attention. Could somebody help me out. Thanks. I am a distance learning...

    Started by dave‎, 10-09-2006 10:40 AM
    • Replies: 0
    • Views: 2,461
    10-09-2006, 10:40 AM Go to last post
  54. Question Standard Error Question

    Greetings! I'm working on a stats assignment and I'm stumped. I've searched several websites and looked through both my current and former stats...

    Started by Stacey‎, 10-09-2006 12:05 AM
    • Replies: 0
    • Views: 1,965
    10-09-2006, 12:05 AM Go to last post
  55. Question Linear Correlation Coefficient

    The text book that I am using does not explain step by step how they used the linear correlation coefficient equation to get the answer. When I...

    Started by blondie23‎, 10-08-2006 06:34 PM
    • Replies: 1
    • Views: 2,235
    10-08-2006, 09:37 PM Go to last post
  56. Help Please!!!!

    Probability distribution for RV X is given by f(x) = { 1/5 for 2 < x < 7; 0 elsewhere find P(3 < X < 5) as a fraction. also, Show that f(x)...

    Started by Leper Messiah‎, 10-08-2006 09:35 PM
    • Replies: 0
    • Views: 1,547
    10-08-2006, 09:35 PM Go to last post
  57. Unhappy Logistic Regression - Odds Ratio's

    Hi, I am attempting to interpret the SPSS output used in direct logistic regression. In the Parameter Estimates table the Exp(B) output's are: .473;...

    Started by Mark‎, 10-08-2006 07:20 AM
    • Replies: 1
    • Views: 2,951
    10-08-2006, 04:34 PM Go to last post
  58. Exponential Distribution problem

    I am having trouble undestanding this question: The daily failure rate of an electrical component follows an exponential distribution with...

    Started by Mare74‎, 10-07-2006 04:44 PM
    • Replies: 0
    • Views: 2,098
    10-07-2006, 04:44 PM Go to last post
  59. T-Test Question

    Hi Everyone, I'm 98% done with my statistics homework, and I'm just stuck on one issue. To make a long story short, I was asked to do...

    Started by MdmeBtrfly‎, 10-07-2006 02:45 PM
    • Replies: 1
    • Views: 2,429
    10-07-2006, 04:00 PM Go to last post
  60. Which Statistics To Use?

    I am looking at the effects of 4 different driving training methods on 4 different groups of people. My dependent variables are thier number of...

    Started by lstanley‎, 10-06-2006 06:44 PM
    • Replies: 3
    • Views: 2,199
    10-07-2006, 12:46 PM Go to last post

+ Post New Thread

Thread Display Options

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.

Order threads in...

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

Icon Legend

Contains unread posts
Contains unread posts
Contains no unread posts
Contains no unread posts
More than 15 replies or 300 views
Hot thread with unread posts
More than 15 replies or 300 views
Hot thread with no unread posts
Closed Thread
Thread is closed
Thread Contains a Message Written By You
You have posted in this thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats