This tutorial is detailed explanation of Measure of Dispersion like Range, Interquartile Deviation, Quartile Deviation, Mean Deviation with their excel commands. Measures of dispersion is used for analysis of variation in data. It is the important part of descriptive statistics.
The Etiquette of Social Media by Leonard Kim
Technology Management in Business by Dr. Avinash Pawar, Dr. Nitin Zaware and Dr. Kuldip Charak
दादा जी की कहानियां by प्रोफेसर कृष्ण कुमार