Tag Archives: basic

Before You Analyze Data

Before you start analyzing data, you need to 1) know you have the right data, and 2) understand the data and the process that produced it.

This post assumes, of course, that you already accomplished some of the hardest tasks already: figuring out what data you need, where to get it, and actually getting the data. Good luck with that. :)

This post is part of the Excel: Basic Data Analytic series.

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How to Profile Data

Before you analyze data, you should profile it.

Otherwise, your analysis may not be too broad, too narrow, or you may miss some important insights or errors.

This post is part of the Excel: Basic Data Analytic series.

Data profiling is developing a profile of your data, just as facial profiles of a person, taken from various angles, helps you size up a person’s nose, identify whether his chin is sagging, and how far apart the person’s eyes are.

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Kyle and a Conversation about Analytics

kyle bitsA while back, a reader named Kyle and I had a conversation about analytics.

It started with his reading my Excel:Basic Data Analytics post where I list a number of procedures that anyone can do in Excel.

Kyle said he was expecting some “super sophisticated process & methodology that works like magic.”

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Excel: Text to Columns

basic data analytics1Excel’s Text to Columns function allows you to separate pieces of data in a single column into multiple columns.

This function helps when key data is buried in a field with other information and you need to extract the key data into a separate column before you can analyze it.

For example, you obtain a list of email addresses, and all you want are the user IDs. Or you get a list of servers, and the server name is server.domain.com, and you need just the “server” name. Or you need to separate LastName, First Name into separate columns. That’s where Text to Columns saves the day.

This article is the fourth post in the Excel basic data analytic series.

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Excel: Identify Unique Values

Tobasic data analytics1 identify unique values in an Excel table, follow the steps below.

This article is the third post in the Excel basic data analytic series, which starts here.

The steps for identifying unique values are similar to identifying duplicates. The first difference shows up in step 3 below.

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Excel: Identify Duplicates

While thbasic data analytics1e previous post in this series described how to remove duplicate values in Excel, this post describes how to identify duplicates.

The remove duplicates function doesn’t tell you which values are duplicates, it just removes them. Sometimes you need a list of the duplicates so you can review them in detail or include them in your workpapers.

So we’ll look at how to create a list of duplicates across all values/columns and in specific columns.

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Excel: Remove Duplicates

basic data analytics1To remove duplicate values in Excel, follow the steps below.

This is the first post in a series of basic data analytic procedures using Excel. If you work with data regularly, these procedures will help you understand your data better and analyze it faster.

I started this series because I am asked how to do these tasks, sometimes by experienced contractors and auditors.

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