Nina Codeacova

My biggest takeaway from this course is that the efficient use of data analytics involves embedding it in every business process, collecting and presenting results in simple yet exhaustive visuals and finally drawing critical insights from the data presented, the insights that further help in the business decision process. Companies that have the…[Read more]

I think that the most important takeaway from the guest speakers’ presentation was that a good data visualization should be easy to understand for the general audience (with no special background, like statistics or economics), the color scheme should be consistent in all of the graphs used to make it easier for the audience to compare different s…[Read more]

What is the most common visit reason for patients aged 70 and over?
Answer: Difficulty breathing

The following graph shows the correlation between the SAT scores and high school graduation rates. The darker states have higher correlation between these 2 factors.
http://www.datamasher.org/mash-ups/sat-scorescombined-reading-mathematics-divided-people-25-yrs-who-completed-high-school

Q2:
The process is the logical sequence of smaller tasks, the final outcome of a process is the achievement of a result. Each task within a process is performed based on previous data collected and stored in a company’s database. The more accurate and up-to-date the data is, the more accurately it shapes the tasks and the better results are achieved.

In my previous experience at a real estate investment trust, one of the key performance indicators in the accounts payable department was the cycle time to process an invoice. I think it meets the SMART criteria:
– Specific – clearly defined in terms of the target time needed to process an invoice
– Measurable – it can be measured in number of…[Read more]

I did recruitment of experts for a consulting company. The leading indicators for the recruitment process would be: the number of applications received, the number of resumes selected, the number of interviews held. The lagging indicator would the actual number of positions filled. If we compare the leading indicators to the lagging indicators it…[Read more]

Identity Theft: You Should Be Worried

The presented infographic tells a story that is easy to follow. There is a good use of colors and pictures that help imagine the information that is presented. There is no visual clutter and the size of the pictures used is appropriate, the pictures that are bigger grab reader’s attention t…[Read more]

Another example of a cluttered graph: http://danizablu.files.wordpress.com/2011/02/badinfo.jpg

http://exitcreative.net/blog/tag/bad-infographics/
The size of the bubble doesn’t correspond to the percentage number that it shows.

From my understanding the key difference between an ERD and a schema is that an ERD is a diagram that outlines the structure of the database, it shows the relationships between the entities and their attributes and it is created as a very first step; whereas a schema is the actual database comprising a set of tables, a schema is created based on…[Read more]

Q2:
I would consider an ERD a form of information. It contains data, which is interrelated and integrated into a system providing information for the end-users. The end-users, however, may derive knowledge from the information they are extracting from the database. Knowing how to use specific queries, relevant information may be extracted that…[Read more]