What is a Grouped Frequency Distribution Table There are 3 methods for calculation of mean :Direct Method Assumed mean deviation method Step deviation method.1. Direct Method for Calculation of MeanAccording to direct method2. Assumed Mean Method Arithmetic mean = Note : The assumed mean is chosen, in such a manner, thatIt should be one of … [Read more...] about What is a Grouped Frequency Distribution Table
Step deviation method
Correlation
https://www.youtube.com/watch?v=ugd4k3dC_8Y Correlation The relationship between two variables such that a change in one variable results in a positive or negative change in the other variable is known as correlation. Types of correlationPerfect correlation: If the two variables vary in such a manner that their ratio is always constant, then the correlation is … [Read more...] about Correlation