STAT 100 Lecture Notes - Lecture 5: Exploratory Data Analysis, Temporality, Coordinate Time
14 Jun 2018
School
Department
Course
Professor
Data cleaning :
The process of transforming raw data to facilitate
subsequent analysis
.
Data cleaning Exploratory Data
-Analysis
transforming ,visualizing and summarizing data
Scope :how Cin )complete is the data
Does my data cover my area of interest ?
Is my data too expansive ?
Does my data cover right time frame ?
Temporality :how is the data situated in time
Data is often changing,need to think about when
data is collected
Time stamp :when event happened/enter in system
Fine
Grained a
coarse
Grained
Data and how time is encoded ,time Zone
look for pattern :Does happen same time
Big Data ,need to fitter
