Questions in topic: "linear"
https://developer.ibm.com/answers/questions/topics/single/260979.html
The latest questions for the topic "linear"Linear Mixed Model repeated covariance type
https://developer.ibm.com/answers/questions/512929/linear-mixed-model-repeated-covariance-type.html
Hello everyone :)
I need your help with regards to specifying repeated covariance type in SPSS.
I am trying to build a Linear Mixed Model in SPSS with the subject being 'borough' and repeated variable being YEAR . My dependent variable is the number of people claiming housing benefit, per year (for 7 years overall), for each borough. All my covariates (fixed effects) represent a value for a tax year. Examples of my covariates are: population, unemployment rate, mean rent, median house price to median earnings ratio. I've tried setting different covariance types and the results do differ significantly, so I guess it is important to set the correct one. I've tried researching, how to determine the repeated covariance type but I've been unsuccessful. This is the only guidance I've found https://www.ibm.com/support/knowled...ariance_structures.html#covariance_structures however, as I am not a statistician (but a sociologist) these descriptions mean nothing to me and sound like a foreign language.
The covariance types options are:
- Ante-Dependence:First Order
- AR1
- AR1 Heterogenous
- ARMA
- Compound Symmetry
- Compound Symmetry: Correlation Metric
- Compound Symmetry: Heterogenous
- Diagonal Factor Analytic: First Order
- Factor Analytic: First Order Heterogeneous
- Huynh-Feldt
- Scaled Identity
- Toeplitz
- Toeplitz: Heterogenous
- Unstructured
- Unstructured:Correlations
I would be grateful for your help!linearmixedmodelsSat, 27 Jul 2019 16:57:22 GMTmaggieldnLinear Mixed-Effects Model error message
https://developer.ibm.com/answers/questions/505775/linear-mixed-effects-model-error-message.html
There are two fixed factors in my LMM: the between-subjects factor of Group and the within-subjects factor of Task. There is the single random factor of Participant nested within Group.
I am getting the **"levels of the repeated effect are not different for each observation within a repeated subject"** error message when trying to run my analysis. I put the Participant factor in the Subjects box and the Task factor in the Repeated box on the first prompt.
I have looked at lots of information on this, including this from IBM - https://www-01.ibm.com/support/docview.wss?uid=swg21479744 - but I have not been able to resolve the problem. The info I've found is geared towards situations when there are single measurements per repeated condition. The issue seems to be that I have **raw data** (RTs) and, thus, multiple measurements per repeated condition - each participant has about 50 trials per Task. Thus, a typical participant looks something like this:
Part. Group Task RT
1 1 1 .015
1 1 1 .024
1 1 1 .073
1 1 1 .009
and so on.
Any suggestions? Do I need to transform the data itself, insert some syntax, or what? How significant are the ramifications if I treat the repeated factor as a between-groups factor?linearmixedmodelsThu, 23 May 2019 15:04:50 GMTPaul SanfordLogistic regression assign gender to probability
https://developer.ibm.com/answers/questions/477654/logistic-regression-assign-gender-to-probability.html
Hello everybody, I have a set of data which I want to analyse with SPSS. Unfortunately, 16.35 % of the data does not have information for the gender. I have noticed following:
- Female: 25.77 %
- Male: 57.88 %
- No gender: 16.35 %
Proportion of males of data with available gender information: 69.19 %
When predicting gender with a binary regression and saving the values one obtains an average for predicted gender of 0.702596488.
But to use binary data, I want to only have 0 (female) or 1 (male) for gender in the dataset. To achieve this, I exported the data with predicted gender probabilities to Excel. You can find the excel worksheet here: https://1drv.ms/x/s!AtNwspiFU1pNhK9b3Vh8tHcDUA71SA
• When using the Round function in Excel I get a column with following average: 0.97375 (nearly only males, which are coded as 1)
• To get a higher (and more realistic) proportion of females, I have used following formula: =IF(AH2>0.7, 1, 0). This yields an average of 0.589.
Now, I am wondering whether there is a different way in Excel to only have binary data but with a similar distribution (70 % males – 30 % females) of the data with existing gender information while using the results from the regression.
Thank you very much for your answer.regressionlineardotMon, 29 Oct 2018 06:34:00 GMTSPSS User 12345Coefficients table for linear regression only shows dot for significance
https://developer.ibm.com/answers/questions/475283/coefficients-table-for-linear-regression-only-show.html
Hello everybody,
I am using SPSS to run a regression analysis. Given data on current assets, total assets, current liabilities and accounts payable from industry averages and the company FOVO I want to forecast NetSales. NetSales are given for the industry but not FOVO so that I want to forecast this.
However, when running a linear regression, I get following output in SPSS:
![alt text][1]
Why can I not see the significance in the coefficients table?
Thank you very much for your help!!
[1]: /answers/storage/temp/24808-1.pngregressionlineardotSun, 14 Oct 2018 05:09:31 GMTSPSS User 12345Missing predictions with Automatic Linear Modelling (ALM)
https://developer.ibm.com/answers/questions/463254/missing-predictions-with-automatic-linear-modellin.html
I want to use a model derived from the ALM facility to predict new data. I do this by: (a) selecting a subset of the records to 'train' the model; (b) selecting all of the records; and (c) using the PREDICT function with the trained model.
Usually, I get predicted values for all of the records, and then pick out the ones I want by hand. However, I notice that there are often gaps in the predicted values for the 'test' data (i.e. not used for training). Instead of a value, I get an empty cell.
Looking at the data, I can see that this happens when my 'test subject' has extreme values in one or more of the predictors which the model employs. My questions are: (a) can anyone confirm what is happening here?; and (b) can anyone tell me how to force the model to make a prediction in this case?spssspssstudentlinearTue, 07 Aug 2018 14:13:52 GMTThomas HopeSum over decision variables, MIP with OPL
https://developer.ibm.com/answers/questions/460091/sum-over-decision-variables-mip-with-opl.html
Hey everybody,
My question is the following:
I have two integer variables: A and B
and many boolean variables x[i].
I would like to write a constraint like:
![alt text][1]
[1]: /answers/storage/temp/23324-sum.png
A and B are also in a finite range.
Any Ideas how to linearize that (it looks linear, I guess variables in the sum are a problem)linearsummarizationMon, 23 Jul 2018 14:40:11 GMTlennartDigitalSPSS Linear Regression no ouput
https://developer.ibm.com/answers/questions/449208/spss-linear-regression-no-ouput.html
Hello,
I am trying to run SPSS partial least squares regression, however, I cannot get the correct graph to output and all I get is
PLS T3_PSI MLEVEL=S WITH T1_PSI
/CRITERIA LATENTFACTORS=5.
How do I fix this?
Thanks in advnacespsssslregression#spsslinearpartialleastTue, 22 May 2018 19:05:17 GMTReesj4how to create a queue manager with both linear and circular logs, is it possible?
https://developer.ibm.com/answers/questions/420385/how-to-create-a-queue-manager-with-both-linear-and.html
Hi,
I would like to create a queue manager with combination of linear and circular logs, is it possible to create ???
Please suggest tips to do this.mqlogslinearcircularThu, 21 Dec 2017 07:04:21 GMTsadiq2010I need to carry out a linear mixed models with post hoc Sidek. Is this possible with version 25?
https://developer.ibm.com/answers/questions/412110/i-need-to-carry-out-a-linear-mixed-models-with-pos.html
I need to carry out a linear mixed models with post hoc Sidek. I can't seem to figure out how to do this on version 25. Any help is appreciated. I am new to SPSS!linearmixedmodelsposthocThu, 09 Nov 2017 20:52:27 GMTcdezynskiSPSS v25 bootstrapping output in linear mixed model analysis does not appear
https://developer.ibm.com/answers/questions/407288/spss-v25-bootstrapping-output-in-linear-mixed-mode.html
Good Evening,
I have recently installed SPSS v25 Premium GradPack from onthehub.com. After inputting all relevant data into the linear mixed models analysis, selecting the bootstrapping icon then checking the "perform bootstrapping" box with adjusted level of 100 sample (at the request of my assignment), all usual output is produced, but the bootstrapping output box does not appear. I have found a similar forum question regarding this issue and have download the fix file provided, but am unable to run it in order to resolve the issue. I have a windows 10 operating system. Any suggestions would be most appreciated. Thank you :)
- fix download found in this post:
Bootstrap Option Active but Table Missing From Output Closed
BettinaW (20771) answered | Sep 15, '17spssspsslicensingspss25bootstraplinearTue, 17 Oct 2017 04:10:19 GMTPhDNSUAre there any advantages to GENLIN over REGRESSION for a multiple linear regression model?
https://developer.ibm.com/answers/questions/405064/are-there-any-advantages-to-genlin-over-regression.html
I am trying to discern whether I have created the best model possible in light of an almost significant finding for our outcome of interest.
I ran a multiple linear regression in REGRESSION by going to Analyze then Regression then Linear. My model was run using the following syntax:
REGRESSION
/MISSING LISTWISE
/STATISTICS COEFF OUTS R ANOVA
/CRITERIA=PIN(.05) POUT(.10)
/NOORIGIN
/DEPENDENT Y
/METHOD ENTER X1 X2 X3 X4 X5 X6 X7
/SAVE COOK
I removed outliers that had a Cooks D of >0.03. There were 8 outliers out of a sample of 133.
Our main outcome of interest is p=0.056 when outliers are removed. It was significant before outliers were removed. It is statistically significant if instead of listwise deletion we use pairwise deletion. It is also statistically significant if we log transform the variable.
I am wondering if there is any merit to creating a model in GENLIN. Might there be additional options in GENLIN that might help us explore if a better model might be built than we could build using REGRESSION? I have tried the following syntax, but am running into a problem with COOKS Distance.
Previously, Cooks D was all under 1 in my REGRESSION model. Now, we see COOKS D above 30. It doesn't look like it is calculating the same value. Also, there is no value given for 15 cases for which there previously was a Cooks D. I'm not sure why SPSS is omitting these cases from Cooks D calculation.
GENLIN Y WITH X1 X2 X3 X4 X5 X6 X7
/MODEL X1 X2 X3 X4 X5 X6 X7 INTERCEPT=YES
DISTRIBUTION=NORMAL LINK=IDENTITY
/CRITERIA SCALE=MLE COVB=ROBUST PCONVERGE=1E-006(ABSOLUTE) SINGULAR=1E-0.12 ANALYSISTYPE=3(WALD)
CILEVEL=95 CITYPE=WALD LIKELIHOOD=FULL
/MISSING CLASSMISSING=EXCLUDE
/PRINT CPS DESCRIPTIVES MODELINFO FIT SUMMARY SOLUTION
/SAVE COOK.
Any information about why the values for COOKS distance are so high in GENLIN in comparison to REGRESSION would be helpful. I am interested in why the COOKS Distance value is missing in GENLIN for observations that do not have any missing data. Also, any insights about how GENLIN is different from REGRESSION would be helpful.regressionlinearThu, 05 Oct 2017 02:33:21 GMTKristen OHow can I compare intercepts of two regression lines?
https://developer.ibm.com/answers/questions/393588/how-can-i-compare-intercepts-of-two-regression-lin.html
I want to compare slopes and intercepts of two regression lines. I did the comparison between the slopes by following this guide "Testing the equality of regression slopes among groups", but I still don't know ho to test the difference between the intercepts. Is there a way to add the comparison to a syntax similar to the one reported in the guide (reported below)?
UNIANOVA
salary BY college WITH gpa
/METHOD = SSTYPE(3)
/INTERCEPT = INCLUDE
/CRITERIA = ALPHA(.05)
/LMATRIX 'Business vs. Engineering' college*gpa 1 -1
/DESIGN = gpa college college*gpa .regressionlinearinterceptSun, 13 Aug 2017 21:29:07 GMTnsambucoHow can I manage MQ linear log files automatically?
https://developer.ibm.com/answers/questions/393209/how-can-i-manage-mq-linear-log-files.html
What are the options available for managing MQ linear log files automatically? What if I want to be able to use old log files to rebuild the queue manager on another system (a backup queue manager)?mqmessaginglogsbackupmanagementlinearThu, 10 Aug 2017 19:10:02 GMTJustin T. Fries3 way interaction graph SPSS
https://developer.ibm.com/answers/questions/381891/3-way-interaction-graph-spss.html
In SPSS I ran a mixed linear model with a three way interaction. The interaction was significant. How do I graph this interaction using SPSS?spssstatisticsgraphlinearinteractionFri, 16 Jun 2017 12:05:30 GMTCindyboopSPSS Syntax - Linear Interpolation
https://developer.ibm.com/answers/questions/377760/spss-syntax-linear-interpolation.html
I have 7 data points (time vs. melatonin concentration) for each ID number (in long format). I need to linear interpolate the time at two different set melatonin concentrations and then loop this through all ID numbers. If anyone has any suggestions on how I can do this, that would be greatly appreciated.linearFri, 26 May 2017 16:04:44 GMTAK1234sepcific features of Automatic Linear modeling
https://developer.ibm.com/answers/questions/364287/sepcific-features-of-automatic-linear-modeling.html
So far, I used ' analysis -> linear.. ' tool when I need to construct my statistic model.
However, I've recently found out there was a 'automatic linear modelling' options just above the 'linear..' button, and I have some questions about its specific features.
1. It looks like they automatically trim outliers according to the Cook's Distance method, which is displayed in the 'Outlier' slide in the output image. Then, are they all considered as outliers and are not included in their final model?
2. It also seems that they offer Forward Stepwise, AIC, and best subsets method to select ideal set of variables. Are there any options for forward, backward, and stepwise method in 'Automatic Linear Model'?
3. Unlike 'Linear..' feature which I can see many decimals of coefficients when I double-click the output image, 'Automatic Linear Modeling' does not display more than 3rd decimals of model's coefficients even if I double - click their tables. How can I see more decimals with their output image?
4. Are their any options of displaying prediction interval of individual predicted values in 'Automatic Linear Model'?spssspssstudentlinearThu, 23 Mar 2017 07:29:52 GMTJHK_26SPSS Modeler Linear Regression Node's Clef codes...
https://developer.ibm.com/answers/questions/317592/spss-modeler-linear-regression-nodes-clef-codes.html
Hi,
I have developed a new algorithm on linear regression model. I want to create a node like as linear node in spss modeler. I am looking for linear regression node's clef code in spss modeler to examine. Then, I want to write my algorithm clef code like as linear regression node.
Where can I obtain linear regression node's clef code? Can you help me, please?
Best,
Murat YAZICI, M.Sc.spssmodelernodemodelalgorithmslinearclefWed, 02 Nov 2016 06:08:05 GMTmuratyaziciLinear Mixed Mode, insufficient memory warning
https://developer.ibm.com/answers/questions/311852/linear-mixed-mode-insufficient-memory-warning.html
I am using SPSS ver23, I am trying to run Linear Mixed Model for repeated measures, however, I always got a warning message of insufficient memory so could not perform the test. Although i tried to simplify the model by removing some variables and cases, it did not work. How I can solve this issue?
I have 2 repeated factors and 3 between subject variables. I am using a laptop built in with Intel i7 core and 8gb ram.
On IBM Central fix website i found a downloadable fix back 1 for ver 24. Mixed model insufficient memory is among the list of fixes on this back. However, no such fix i could find for ver 23
Does the spss 24 trial version give me access to mixed model?
Thank youspssstatisticsmodellinearin-memoryTue, 18 Oct 2016 00:42:14 GMTHNWLinear regression modeling with watson
https://developer.ibm.com/answers/questions/283386/linear-regression-modeling-with-watson.html
I want to find an estimate function for calculating nyc taxi can fares. I found the historical data of actual fares here (http://www.nyc.gov/html/tlc/html/about/trip_record_data.shtml). I've tried use excel and tableau, but my pc does have the specs to handle this much data(about 1.7 gb per month of data)
Is there a way to use Watson analytics to find an estimation function? ie. fare_price = a*distance + bwatsonregressionmodelinglinearWed, 22 Jun 2016 12:42:02 GMTth3alchemistError Running Linear Mixed Effects Model,Error - Mixed Linear Effects Model
https://developer.ibm.com/answers/questions/282571/error-running-linear-mixed-effects-modelerror-mixe.html
I tried using the following syntax:
MIXED FEV1_zscore BY Smoking_Status Time_10years_or_less sex ethnic Spirometer_Type Approved_Person_Number WITH BaseDate TimePoint Time /CRITERIA=CIN(95) MXITER(100) MXSTEP(10) SCORING(1) SINGULAR(0.000000000001) HCONVERGE(0, ABSOLUTE) LCONVERGE(0, ABSOLUTE) PCONVERGE(0.000001, ABSOLUTE) /FIXED=| SSTYPE(3) /METHOD=REML /PRINT=SOLUTION /RANDOM=Spirometer_Type Approved_Person_Number | SUBJECT(id) COVTYPE(UN).
HOWEVER, I GET THE MESSAGE- insufficient memory to estimate model parameters. It works fine if I use only fixed factors- the problem arises when I try adding random effects. I tried increasing workspace but it doesn't help.
,I tried using the following syntax:
MIXED FEV1_zscore BY Smoking_Status Time_10years_or_less sex ethnic Spirometer_Type Approved_Person_Number WITH BaseDate TimePoint Time
/CRITERIA=CIN(95) MXITER(100) MXSTEP(10) SCORING(1) SINGULAR(0.000000000001) HCONVERGE(0, ABSOLUTE) LCONVERGE(0, ABSOLUTE) PCONVERGE(0.000001, ABSOLUTE)
/FIXED=| SSTYPE(3)
/METHOD=REML
/PRINT=SOLUTION
/RANDOM=Spirometer_Type Approved_Person_Number | SUBJECT(id) COVTYPE(UN).
HOWEVER, I GET THE MESSAGE- insufficient memory to estimate model parameters. It works fine if I use only fixed factors- the problem arises when I try adding random effects. I tried increasing workspace but it doesn't help.spssstudentlinearMon, 20 Jun 2016 13:24:47 GMTprachikaisthaHow can I change a MQ Queue Manager from Linear Logging to Circular Logging or vice versa?
https://developer.ibm.com/answers/questions/260981/how-can-i-change-a-mq-queue-manager-from-linear-lo.html
How can I change a MQ Queue Manager from Linear Logging to Circular Logging or vice versa?mqmessagingloggingloglinearcircularTue, 29 Mar 2016 18:44:27 GMTMCregge