Tag Archives: big data analytics

Data Science

Convert CSV to RDS When Using R for Easier Data Handling

Posted on by Monika Wahi
If you want to use R for a project and the source CSV is very big, it can improve input/output efficiency to convert the file to an RDS.
25
Mar

Convert CSV to RDS is what you want to do if you are working with big data files in R GUI and want to improve efficiency. Read my blog post for an explanation and video demonstrations of this process!

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Data Science

Querying the GHDx Database: Demonstration and Review of Application

Posted on by Monika Wahi
Many data scientists interested in health are looking to query the Global Burden of Disease database, also known as the GHDx
16
Feb

Querying the GHDx database is challenging because of its difficult user interface, but mastering it will allow you to access country-level health data for comparisons! See my demonstration!

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Data Science

Variable Names in SAS and R Have Different Restrictions and Rules

Posted on by Monika Wahi
You need to come up with names of variables in SAS and in R, but they need to be compatible with both languages if you are running a data warehouse.
04
Feb

Variable names in SAS and R are subject to different “rules and regulations”, and these can be leveraged to your advantage, as I describe in this blog post.

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Career Development

Interview Preparation for Data Science Positions: Tips and Tricks

Posted on by Monika Wahi
You can actually prepare for interviewing for data science positions by doing certain activities, like looking up common questions, and practicing answers.
20
Jan

Interview preparation for data science jobs can involve taking several simple, actionable steps to make yourself feel confident and ready to answer questions with ease. Read my blog post for my tips and tricks!

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Data Science

Counting Rows in SAS and R Use Totally Different Strategies

Posted on by Monika Wahi
If you are a data scientist working with large datasets, you need to learn the commands to count both columns and rows in the dataset, whether you are using SAS or R.
14
Jan

Counting rows in SAS and R is approached differently, because the two programs process data in different ways. Read my blog post where I describe both ways.

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Data Science

Native Formats in SAS and R for Data Are Different: Here’s How!

Posted on by Monika Wahi
Why use particular data formats for different programming languages in statistics? Because the programs can then process the data faster and with more accuracy.
07
Jan

Native formats in SAS and R of data objects have different qualities – and there are reasons behind these differences. Learn about them in this blog post!

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Career Development

Paid Mentoring for Data Science: Is it Worth the Cost?

Posted on by Monika Wahi
If you are wondering if you should set up a paid mentoring relationship with a data science mentor, you definitely want to read this. You want to make sure you get your money's worth.
06
Jan

Paid mentoring for data science can be worth the cost in certain circumstances – but not others. My blog post provides guidance on hiring a paid mentor.

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Educational Resources

SAS Macros for Beginners: Learn the Basics with my Tutorial Videos!

Posted on by Monika Wahi
If you are new to SAS, you will want to learn about macros. I make video tutorials and have written a book about data warehousing to help learners grasp automation in SAS.
29
Nov

Want to get started learning about SAS macros? This blog post provides SAS macros for beginners with video tutorials to walk beginners and code newbies through the basic steps!

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Data Science

Dumbbell Plot for Comparison of Rated Items: Which is Rated More Highly – Harvard or the U of MN?

Posted on by Monika Wahi
This is an example of a dumbbell plot from the ggalt package in R that you can also use in RStudio
20
Sep

Want to compare multiple rankings on two competing items – like hotels, restaurants, or colleges? I show you an example of using a dumbbell plot for comparison in R with the ggalt package for this exact use-case!

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Data Science

Data for Meta-analysis Need to be Prepared a Certain Way – Here’s How

Posted on by Monika Wahi
This is the forrest plot resulting from analysis with open source statistical software R using package rmeta.
30
Jul

Getting data for meta-analysis together can be challenging, so I walk you through the simple steps I take, starting with the scientific literature, and ending with a gorgeous and evidence-based Forrest plot!

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