The difference between data mining and data profiling is that:ĭata profiling: It targets on the instance analysis of individual attributes. Some of the common problems faced by data analyst are: List Out Some Common Problems Faced By Data Analyst? It gives information on various attributes like value range, discrete value and their frequency, occurrence of null values, data type, length, etc.ĭata mining: It focuses on cluster analysis, detection of unusual records, dependencies, sequence discovery, relation holding between several attributes, etc. Mention The Name Of The Framework Developed By Apache For Processing Large Data Set For An Application In A Distributed Computing Environment? The missing patterns that are generally observed are: Mention What Are The Missing Patterns That Are Generally Observed? Hadoop and MapReduce is the programming framework developed by Apache for processing large data set for an application in a distributed computing environment. Missing that depends on the missing value itself.Missing that depends on unobserved input variableĮxcel Data Analysis Interview Questions.In KNN imputation, the missing attribute values are imputed by using the attributes value that are most similar to the attribute whose values are missing. #Clinical sas interview questions in cognizant code#Įxplain What Should Be Done With Suspected Or Missing Data? Usually, methods used by data analyst for data validation are: Mention What Are The Data Validation Methods Used By Data Analyst? By using a distance function, the similarity of two attributes is determined.