{"id":16444,"date":"2018-05-24T07:30:30","date_gmt":"2018-05-24T07:30:30","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=16444"},"modified":"2021-12-05T21:50:13","modified_gmt":"2021-12-05T16:20:13","slug":"stat-logical-interview-questions","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/stat-logical-interview-questions\/","title":{"rendered":"30 Latest SAS-STAT Logical Interview Questions and Answers"},"content":{"rendered":"

SAS-STAT Logical Interview Questions<\/h3>\n

In our previous SAS-STAT tutorial, we discussed Top 30 SAS-STAT Interview Questions<\/strong><\/a>. In this article, we provide 30 latest SAS-STAT Logical Interview Questions. These logical questions are asked in SAS interviews.<\/p>\n

So, Let’s start 30 Tricky SAS-STAT Logical Interview Questions.<\/p>\n

Top Latest SAS-STAT Logical Interview Questions<\/h3>\n

After, discussing SAS-STAT Interview Question first part, we are ready to face this SAS-STAT Logical Interview Questions and Answers.<\/p>\n

Q1. Explain the statements used in the below example.<\/b><\/span><\/p>\n

proc glimmix data=sashelp.iris;\r\nclass species;\r\nmodel age=weight;\r\nrandom age=weight;\r\nrun;<\/pre>\n
The\u00a0CLASS statement instructs the technique to treat the variables species as type variables. The version announcement in the example shown above specifies the reaction variable as a pattern proportion by means of the use of the occasions\/trials approach.<\/span><\/p>\n
the solution option inside the version declaration requests a listing of the answers for the constant-consequences parameter estimates.<\/span><\/p>\n
The RANDOM statement specifies that a random intercept is drawn one at a time and independently for each center in the take a look at.<\/span><\/p>\n
Q2. What is the PROC MIXED procedure in SAS STAT used for?<\/b><\/span><\/p>\n
The PROC blended system in SAS\/STAT fits specific blended models. mixed version have the capability to allow for one of a kind assets of variation in information, it lets in for one of a kind variances for corporations and takes into account correlation structure of repeated measurements.<\/span><\/p>\n
Q3. Write a sample program using PROC MIXED procedure including all the required statements?<\/b><\/span><\/p>\n
proc mixed data=SASHELP.IRIS plots=all;\r\nclass species;\r\nmodel petallength= \/;\r\nrun;\r\n<\/pre>\n
Q4. What is the error in the example below?<\/b><\/span><\/p>\n
proc mixed data=SASHELP.IRIS plots=all;\r\nmodel petallength= \/;\r\nclass species;\r\nrun;<\/pre>\n
The MODEL statement must appear after the CLASS statement always.<\/p>\n
Q5. What is the difference between PROC HPMIXED and PROC NLMIXED?<\/b><\/span><\/p>\n
Through the PROC HPMIXED method, we can specify a linear combined version with variance factor structure, to estimate the covariance parameters via constrained maximum chance. <\/span><\/p>\n
The PROC NLMIXED suits nonlinear blended models\u2014that is, models in which each fixed and random outcomes enter nonlinearly.<\/span><\/p>\n
Q6. What does the PARMS statement in PROC NLIMIXED procedure do?<\/b><\/span><\/p>\n
The\u00a0PARMS statement in the NLMIXED procedure is used to identify the unknown parameters and their starting values.\u00a0<\/span><\/p>\n
Q7. Explain the statements used in the example below.<\/b><\/span><\/p>\n
proc nlmixed data=CARS;\r\nparms b1=220 b2=500 b3=310 s2u=100 s2e=60;\r\nmodel X ~ normal(num\/den,s2e);\r\nrandom u1 ~ normal(0,s2u) subject=NUMBER;\r\nrun;<\/pre>\n
The MIXED MODEL statement defines the dependent variable and its conditional distribution given the random effects. Here a normal (Gaussian) conditional distribution is specified.<\/span><\/p>\n
The\u00a0RANDOM statement defines the single random effect to be\u00a0u1, and specifies that it follow a normal distribution with mean 0 and variance\u00a0s2u. The\u00a0SUBJECT=\u00a0statement in the\u00a0RANDOM\u00a0statement is used to define a variable which will indicate when the random effect obtains new realizations.\u00a0<\/span><\/p>\n
Q8. What are the different procedures used for multivariate analysis in SAS STAT?<\/b><\/span><\/p>\n
\"SAS-STAT<\/a>
SAS-STAT Logical Interview Questions – SAS\/STAT Multivariate Analysis<\/p><\/div>\n
Q9. What is the difference between CANCORR and CORR procedures in SAS STAT?<\/b><\/span><\/p>\n
PROC CANCORR\u00a0in SAS\/STAT is used for canonical correlation of data.<\/span><\/p>\n
The PROC CORR procedure produces Pearson correlation coefficients of continuous numeric variables.<\/span><\/p>\n
Q10. Explain the PROC PRINCOMP statement with syntax.<\/b><\/span><\/p>\n
PRINCOMP stands for principal component analysis. The principal component analysis comes under SAS multivariate analysis and is a technique through which we examine relationships among several variables.\u00a0<\/span><\/p>\n
PROC PRINCOMP dataset <OPTIONS>;\r\nVAR variables;\r\n<\/pre>\n
SAS-STAT Logical Interview Questions for Freshers. Q- 2,3,5,6,8,9<\/strong><\/p>\n
SAS-STAT Logical Interview Questions for Experience. Q- 1,4,7,10<\/strong><\/p>\n
Q11. What is the error in the example below?<\/b><\/span><\/p>\n
proc factor data=SASHELP.CLASS;\r\nvar name ;\r\nrun;<\/pre>\n
In the PROC FACTOR procedure, the variables mentioned in the VAR statement should be numeric in nature.<\/span><\/p>\n
Q12. What are the two separate forms of input to the CORRESP procedure?<\/b><\/span><\/p>\n
There are two forms in which, one form is contained inside the TABLES statement and the other is contained inside the VAR statement. Each time you run PROC CORRESP, you must specify either the TABLES or the VAR statement, but not both.<\/span><\/p>\n
Specify the TABLES statement if you are using raw, categorical data, the levels of which define the rows and columns of a table.<\/span><\/p>\n
Specify the VAR statement if your data is already in tabular form.<\/span><\/p>\n
Q13.What is multidimensional scaling and how can we perform it in SAS STAT?<\/b><\/span><\/p>\n
It comes under the class of methods that help us find out the coordinates of a set of objects that are in space and have a specified dimensionality.\u00a0PROC MDS is used for this.<\/span><\/p>\n
Q14. What are the three methods provided by PROC PRINQUAL to perform market research?<\/b><\/span><\/p>\n
These methods are:<\/span><\/p>\n