## Introduction to Regression and Correlation

Statistical methods discussed so far are used to analyze the data involving only one variable. Often an analysis of data... Click here to read more

From basic to higher mathematics

Statistical methods discussed so far are used to analyze the data involving only one variable. Often an analysis of data... Click here to read more

Regression involves the study of equations. First we talk about some simple equations or linear models. The simplest mathematical model... Click here to read more

Let us consider an equation By putting the values of in this equation, we find the values of as given... Click here to read more

In a relation, in which one variable is independent and the other is dependent, some people use the terms ‘cause’... Click here to read more

Scatter diagram is a graphic picture of the sample data. Suppose a random sample of n pairs of observations has... Click here to read more

Correlation is a technique which measures the strength of association between two variables. Both the variables and may be random... Click here to read more

Linear Correlation: Correlation is said to be linear if the ratio of change is constant. The amount of output in... Click here to read more

Positive Correlation: The correlation in the same direction is called positive correlation. If one variable increase other is also increase... Click here to read more

Perfect Correlation: If there is any change in the value of one variable, the value of the others variable is... Click here to read more

The degree or level of correlation is measured with the help of correlation coefficient or coefficient of correlation. For population... Click here to read more

The correlation coefficient is symmetrical with respect to and i.e. The correlation coefficient is the geometric mean of the two... Click here to read more

Calculate and analyze the correlation coefficient between the number of study hours and the number of sleeping hours of different... Click here to read more

Curve Fitting: Curve fitting is a process of introduction mathematical relationship between dependent and independent variables in the form of... Click here to read more

The given example explains you that how to find the equation of straight line or least square line by using... Click here to read more

Regression: The word regression was used by Frances Galton in 1985. It is defined as “The dependence of one variable... Click here to read more

Regression is concerned with the study of relationship among variables. The aim of regression (or regression analysis) is to make... Click here to read more