Learning code can seem like a very intimidating task to do. There are dozens of different languages, a multitude of platforms, and an insane list of commands and functions that make you think “is all of this really worth learning?” Continue reading Wanna Learn Code?
There are many ways data scientists can make error in sampling the population. Using non random samples will usually not give a good presentation of the population. Taking a survey in a specific neighborhood will not result in a good Continue reading Some sources of error in data collection.
Big data. Its become the talk of the town these days. It seems that there is not a company left in the country that hasn’t delved into this field, and if there are any, it’s only a matter of time Continue reading What is Big Data?
Statistics deal with collecting, organizing, analyzing, interpreting, and presenting data. There are two types of statistics: Descriptive and inferential. Descriptive statistics summarizes data from a data set using mean, median, mode, standard deviation…etc. On the other hand, Inferential Statistics makes inferences about populations using Continue reading Which type of Statistical Test should we use?
With the launch of Tableau 9.0, the amount and types of data you can work with have drastically increased. If you’re anything like me and have just recently started working with Tableau, you may have trouble building a dashboard that Continue reading Best of Tableau Visualizations
When working with a new data set, it is important to make sure that all of your information is ready for analysis before it is imported into Tableau. Through this blog post, I will cover various tools to consider while Continue reading Preparing Data for Tableau Analysis
After learning the Tableau for a while, I feel this is a very useful software. It is not just a simple tool that helps to make a better visualization for audience, but it is a software that provides different ways Continue reading The Beauty of Tableau
Tableau and Qlikview have emerged as leading data visualization tools in the last few years. I compared both companies earnings of the last four years from NASDAQ. Qlikview is still number one in revenue but Tableau is gaining a lot of Continue reading Tableau or Qlikview for a fresh career in BI?
Slicers in Excel 2013 are a very important tool that make you filter and see just the fields you want to analyze. Slicers hide all other irrelevant data to the specific analysis. Slicers filter pivot tables. We can filter and Continue reading Slicers in Excel 2013
Below is the list of things or perquisites that need to be performed for smooth and error free configuration of Hadoop Cluster using CDH and Cloudera Manager on CentOS servers. Primarily login as root user into the server Continue reading Prerequisites that need to be performed before setting up a Hadoop Cluster on CentOS and bring up Cloudera Manager