Author: Kanda Data
The Difference Between Pearson Correlation and Spearman Rank Correlation in Research
For those currently conducting data analysis, correlation tests are commonly used to measure the relationship between two variables. However, not all correlation tests are suitable for every type of data. As we all know, data types and characteristics can vary.
Differences Between Paired Sample T-Tests and Independent Sample T-Tests
When we want to compare the means of two data groups, we often use a difference test. The most commonly used difference test is the t-test. In a t-test, the samples being compared can be either paired or independent.
The Difference Between Residual and Error in Statistics
In the field of statistics, the terms “residual” and “error” are often used interchangeably. Many researchers and practitioners consider these terms to have the same meaning, but in reality, they represent significantly different concepts.
Assumptions of Multiple Linear Regression on Cross-Section Data
Multiple linear regression is a statistical technique used to predict the value of a dependent variable based on several independent variables. This regression provides a way to understand and measure the influence of independent variables on the dependent variable.
Assumptions of Multiple Linear Regression on Time Series Data
Multiple linear regression is a statistical analysis technique used to model the relationship between one dependent variable and two or more independent variables. The multiple linear regression model is used to predict the value of the dependent variable based on the estimated values of the independent variables.
Analysis of Cobb-Douglas Production Function: Theoretical Basics and Case Study Examples
In economics, production function analysis is an essential tool for understanding how inputs like labor and capital are transformed into output. One of the most renowned and widely used models for analyzing this relationship is the Cobb-Douglas production function.
Understanding the Profit Formula in Financial Analysis and Examples of Its Calculation
In the business world, achieving optimal profit is a goal sought by entrepreneurs. In financial analysis, knowledge of profit calculation is a fundamental skill that entrepreneurs need to possess.
What to Do If the Regression Coefficient Is Negative?
Linear regression is one of the most commonly used statistical analysis techniques to understand the impact of independent variables on a dependent variable. In regression analysis, the estimated coefficients indicate the extent to which each independent variable affects the dependent variable.