পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| প্রভাব নির্ণায়ক (কুকের দূরত্ব, DFFITS, লিভারেজ)× | মেডিয়ান অ্যাবসোলিউট ডেভিয়েশন (MAD) অনুমান× | সাধারণ ন্যূনতম বর্গক্ষেত্র (OLS) রিগ্রেশন× | |
|---|---|---|---|
| ক্ষেত্র≠ | পরিসংখ্যান | পরিসংখ্যান | অর্থমিতি |
| পরিবার | Regression model | Regression model | Regression model |
| উদ্ভবের বছর≠ | 1977 | 1974 | 2019 |
| প্রবর্তক≠ | R. Dennis Cook (Cook's distance); Belsley, Kuh & Welsch (DFFITS, leverage) | Hampel (influence-curve treatment); classical robust statistics | Wooldridge (textbook treatment); classical least squares |
| ধরন≠ | Regression diagnostic | Robust scale estimator | Linear regression |
| মৌলিক উৎস≠ | Cook, R. D. (1977). Detection of Influential Observations in Linear Regression. Technometrics, 19(1), 15-18. DOI ↗ | Hampel, F. R. (1974). The Influence Curve and Its Role in Robust Estimation. Journal of the American Statistical Association, 69(346), 383-393. DOI ↗ | Wooldridge, J. M. (2019). Introductory Econometrics: A Modern Approach (7th ed.). Cengage Learning. ISBN: 978-1337558860 |
| অপর নাম≠ | Cook's distance, DFFITS, leverage, influential observation detection | median absolute deviation, MAD scale estimator, robust scale estimation, Medyan Mutlak Sapma (MAD) Tahmini | ordinary least squares, classical linear regression, linear regression, en küçük kareler regresyonu |
| সম্পর্কিত | 5 | 5 | 5 |
| সারসংক্ষেপ≠ | Influence diagnostics are a family of post-fit measures that quantify how much each single observation affects a fitted regression. Cook's distance was introduced by R. Dennis Cook in 1977, with leverage and DFFITS formalised by Belsley, Kuh and Welsch in 1980, to flag the observations that most strongly pull the estimated coefficients. | Median Absolute Deviation estimation is a robust measure of statistical dispersion that replaces the standard deviation when outliers are present. Rooted in the influence-curve framework formalised by Hampel (1974), it summarises the spread of a continuous variable using medians instead of means, so a single extreme value cannot distort the result. | Ordinary Least Squares is the classical linear regression method that explains a continuous outcome as a linear combination of predictors. It estimates the coefficients by minimising the sum of squared residuals, and under the Gauss-Markov assumptions these estimates are the best linear unbiased estimator (BLUE). |
| ScholarGateডেটাসেট ↗ |
|
|
|