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Data Analysis Guide

How to Create Graphs in R

How to Create Graphs in R Learning how to create graphs in R is an important step for anyone working with data, assignments, or research results. Graphs make…

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Data Cleaning & Preparation

How to Clean Data in Excel

How to Clean Data in Excel A dataset can look tidy on the screen and still create serious problems during analysis. A date column may contain mixed formats,…

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Data Cleaning & Preparation

How to Clean Data in R

How to Clean Data in R A dataset can look usable and still cause problems the moment analysis begins. Dates may be stored as text, categories may be…

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Data Cleaning & Preparation

How to Clean Data in Python

How to Clean Data in Python Raw data rarely arrives ready for analysis. A dataset may contain missing values, duplicated rows, inconsistent labels, mixed date formats, blank cells,…

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Statistical Analysis

How to Check for Multicollinearity

How to Check for Multicollinearity Multicollinearity is one of the most important assumptions to review before interpreting a multiple regression model. Many students run a regression, look only…

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