PROBABILITY

PROBABILITY “Life is a School of Probability” - Walter Bagehot Prasanta Chandra Mahalanobis, born at Kolkata, was an Indian statistician who devised a measure of comparison between two data sets. He introduced innovative techniques for conducting large-scale sample surveys and calculated acreages and crop yields by using the method of random sampling . For his pioneering work, he was awarded the Padma Vibhushan, one of India’s highest honours, by the Indian government in and he is hailed as “ Father of Indian Statistics ”. The Government of India has designated 29th June every year, coinciding with his birth anniversary, as “ National Statistics Day ”. Prasanta Chandra Mahalanobis Recall Measures of Central Tendency It is often convenient to have one number that represent the whole data. Such a number is called a Measures of Central Tendency. The Measures of Central Tendency usually will be near to the middle value of the data. For a given data there exist several types of measures of central tendencies. The most common among them are