Understanding Data: Central Tendencies and Variability
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: ...