Posts

Showing posts from September, 2025

Understanding Data: Central Tendencies and Variability

Image
  Understanding Data: Central Tendencies and Variability     This blog will explain two basic ideas in Statistics. They are Central Tendencies and Variability. Here, I will explain them with real-life examples so that it could be easily understandable.                  Central Tendencies: Finding “Average” Central tendency helps us to find or identify the central value in a dataset. The three common measures are: ·          Mean : It is often known as average. It is calculated by summing all the values in a dataset and dividing by the number of values. “Figure: Mean calculation formula” For example: Imagine the score of English test of 5 students are : 70,80,90,85, and 95 . The mean score is:    70+80+90+85+95 / 5    = 84 Here, you can understand what kind of question can be formed from the concept of Mean. Below is a small dataset:         ...

Data Portrait

Image
  Data Portrait - A form of art which I had never heard before. A class started with the topic Data Portrait, a session shares about the different sight of visualizing things, numbers, data also feelings. As the concept and the word term has been used here was totally new and the content was moving beyond my expectations.  During the session, many times I felt how it is possible? May be only unique creators can imagine thinks like this. A picture form of data, a colorful form of feelings, a shapes, a unrealistic figures which forms your memories, emotions, noise, smell and ..... As the session started for us, I try to conceptualize things differently. May be I could not add those things perfectly but somehow I tried.  Let me explain my kind of "Data Portrait".  As the session begin with the favorite color or your kind of color. As it was always a Blue, I didn't think twice to grab blue and started moving here and there in a rhythmic form. The blue has always been my ...