# Variance and Standard Deviation of Ungrouped Data

Variance and Standard Deviation of Ungrouped Data Formulas: The variance is . Then ‘σ’ the standard deviation is given by the positive square root of the variance . Calculation of Variance and Standard Deviation for an Ungrouped Data 1. Find the variance and standard deviation of following data 5, 12, 3, 18, 6, 8, 2, Read more about Variance and Standard Deviation of Ungrouped Data[…]

# Heat Engines

Heat Engines Heat is a form of energy that can be easily transferred from one body to another. Heat engine is a kind of heat exchanger that converts heat into thermal and chemical energy. This energy is used to perform mechanical work. Real heat engines are complex and there are many ways of converting heat Read more about Heat Engines[…]