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Showing posts from June, 2021

Excel for Data Analysis

 Most important functions of Excel for data analysis Excel and google sheets are powerful tools for managing the raw data. There are many functions that can make your task easier.  As a Data Analyst, you use many functions like VLOOKUP, Pivot Tables, Conditional formatting, etc., So here, I have listed some most important functions of excel for data analysis : - 1. Pivot Table Pivot tables are a way to aggregate data to look at smaller subsets without using manual filters. Without it, you would use the manual filters on every column, check to see if they work, and then use [SUM] functions. All of that is built for you with a pivot table and pivot chart. You can set rows, columns, values and filters at the same at your level. You can use any aggregate function while creating a Pivot table.  In short, Pivot table gives you the summary of your data. We will see more detail in next blog. 2. VLOOKUP VLOOKUP stands for "Vertical Lookup", this means the act of looking up da...

Power BI Quiz 1

Quiz 1 : Basics of Power BI and Data Analytics

Data Modelling in Power BI

  Modelling is a process to get your connected data for visualization. Basically, in modelling, you will connect to multiple data sources to create your reports.   Now the question is "How to connect multiple data sources to create a report?"  So, the answer is "You can create a relationship to create a logical connection between different data sources". A relationship enables Power BI to connect tables to one another so that you can create reports. How to Create a Data Relationship? The Model view in Power BI Desktop allows you to visually set the relationship between tables or elements. A relationship is where two or more tables are linked together with one or more join key(s) because they contain related data. In the Model view, notice that a block represents each table and the lines between them represent relationships. Adding and removing relationships is straightforward. To remove a relationship, right-click the relationship and select Delete . To create a r...