## Saturday, 3 September 2011

### BUBBLE GRAPHS, some analysis and some OLAP CUBES!

We had a pretty interesting and colorful class today. And more importantly, my laptop dint conk off in between class due to lack of charge.

Pie charts and graphs are so much easier to understand. U know that the whole point of making the chart is to make it easier to understand to someone like me, who just don’t have an appetite for numbers. Hence, making it easier to write today’s blog assignment.

Now, bubble graphs were super simple. SPSS also can’t survive without MS Excel.

According to WIKIPEDIA, bubble chart is a type of chart where each plotted entity is defined in terms of three distinct numeric parameters. Bubble charts can facilitate the understanding of the social, economical, medical, and other scientific relationships.

This chart type lets you compare three variables at once.

· One is on the x-axis,

· One is on the y-axis

· The third is represented by area size of bubbles.

We Use a Bubble chart when we want specific values to be more visually represented in a chart by different bubble sizes.

Bubble charts can be used in analyzing a student’s academic strengths and weakness. In the chart, each subject can be represented with a bubble and the axis can present the scores and the quality of education and the size of the bubble can represent the overall intensity of the subject.

Analysis can be made by understanding the graph and relating all the dimensions of the graph. This analysis is based on correlation of the data on the graph.

And NOW OLAP CUBES

OLAP cube (for online analytical processing) is a data structure that allows fast analysis of data. It can also be defined as the capability of manipulating and analyzing data from multiple perspectives. The arrangement of data into cubes overcomes some limitations of relations database. (Wikipedia)

OLAP cubes are used to analyze data with many different dimensions. For example, a country may want to analyze its GDP growth, by time period, by classes of revenue and cost and comparing it with the actual budget that was preplanned.

That was all for today.

Written by: Anita Nair

Group: Marketing1