Hello, If I have a variable X with N observations and Min and Max values, how can I find the parameters of a log normal distribution that fits X's distribution?   Thanks ... View more

Hello,   Please I need to determine the distribution fitting for a quantitative variable (normal, lognormal, uniform, weibull, triangular, etc, ...) and required parameters to define it .   Is there any procedure that can combine all distributions together to test?   thank you ... View more

Hello,   Please I need to create the ROC to study the discriminatory ability of a QUESTIONAIRE score to classify subjects into a risk group (High or not) based on BMI zscore, example below:   Can you assist with the syntax/variables needed to produce the curve?   Thank you ... View more

Hello,   Please I need to save in a SAS dataset the comparison of means between the risk groups as shown below: the code I used is: PROC GLM DATA=NUTR OUTSTAT=PLEASE; class riskc; model VITB3=riskc; means riskc / tukey; run;   However I cannot track the output in a saved dataset under WORK library.   Thanks for the help! ... View more

Hello, While proceeding with proc reg, I was not able to produce several regression models with the below displayed error message under LOG:   ERROR: An exception has been encountered. Please contact technical support and provide them with the following traceback information: The SAS task name is [REG] ERROR: Write Access Violation REG Exception occurred at (0EBD30F0) Task Traceback Address Frame (DBGHELP API Version 4.0 rev 5) 000000000EBD30F0 000000000F76F700 sasimgu:tkvercn1+0x220B0 000000000EB86F5F 000000000F76F708 saszimg:tkvercn1+0x5F1F 000000000EB82733 000000000F770050 saszimg:tkvercn1+0x16F3 000000000DD65E16 000000000F770058 sasstgr:tkvercn1+0x84DD6 000000000DD7011A 000000000F7709D0 sasstgr:tkvercn1+0x8F0DA 000000000DD5FDDC 000000000F771170 sasstgr:tkvercn1+0x7ED9C 000000000DD7011A 000000000F7711B0 sasstgr:tkvercn1+0x8F0DA 000000000DD5F5D1 000000000F771220 sasstgr:tkvercn1+0x7E591 000000000641755A 000000000F771228 sasods:tkvercn1+0x22651A 0000000006245BED 000000000F771500 sasods:tkvercn1+0x54BAD 0000000006244E3D 000000000F7717D0 sasods:tkvercn1+0x53DFD 000000000641755A 000000000F771810 sasods:tkvercn1+0x22651A 000000000626B226 000000000F776B00 sasods:tkvercn1+0x7A1E6 000000000641755A 000000000F776B40 sasods:tkvercn1+0x22651A 000000000625BDB1 000000000F779470 sasods:tkvercn1+0x6AD71 000000000DBB1BEA 000000000F779478 sasreg:tkvercn1+0x120BAA 000000000DB069EA 000000000F77F220 sasreg:tkvercn1+0x759AA 000000000DAA3AF8 000000000F77F530 sasreg:tkvercn1+0x12AB8 000000000DAA1989 000000000F77F5F0 sasreg:tkvercn1+0x10949 000000000DA91EC7 000000000F77F6A0 sasreg:tkvercn1+0xE87 000000000566FE76 000000000F77F6A8 sasxshel:tkvercn1+0x4EE36 000000000DBB1953 000000000F77F7C0 sasreg:tkvercn1+0x120913 000000000DA916F7 000000000F77FBE0 sasreg:tkvercn1+0x6B7 000000000364A066 000000000F77FBE8 sashost:Main+0x11BA6 000000000365011D 000000000F77FF50 sashost:Main+0x17C5D 00007FFD8C963034 000000000F77FF58 KERNEL32:BaseThreadInitThunk+0x14 00007FFD8EE81431 000000000F77FF88 ntdll:RtlUserThreadStart+0x21   Can you please advise? ... View more

Hello,   I am working on a variable that needs to be presented in fraction format, not decimal.   I know there is an existing  format=FRACT. However it presents the reduced fraction which I don’t want to.   I want the derived data (Z) to be as follow : X     2        5 Y     4        25 Z   2/4    5/25 and NOT 1/2  1/5 Can you please advise on this, knowing that I need the fraction for numerical calculation, so I cannot consider the CATX function. I am using SAS 9.4  - ANALYTIC PRO WX6. ... View more