השוואת שיטות

	דגימת ג'קנייף (Jackknife Resampling)	רגרסיית קוונטיל (וריאנטים לא-פרמטריים)	רגרסיית ריבועים פחותים רגילים (OLS)
תחום	סטטיסטיקה	סטטיסטיקה	אקונומטריקה
משפחה	Regression model	Regression model	Regression model
שנת המקור	1956	1978	2019
הוגה השיטה	Quenouille (1956); reviewed by Miller (1974)	Koenker & Bassett	Wooldridge (textbook treatment); classical least squares
סוג	Resampling / bias and variance estimation	Quantile regression (nonparametric variants)	Linear regression
מקור מכונן	Quenouille, M. H. (1956). Notes on Bias in Estimation. Biometrika, 43(3/4), 353-360.	Koenker, R. & Bassett, G. (1978). Regression Quantiles. Econometrica, 46(1), 33-50.	Wooldridge, J. M. (2019). Introductory Econometrics: A Modern Approach (7th ed.). Cengage Learning. ISBN: 978-1337558860
כינויים	leave-one-out resampling, Quenouille-Tukey jackknife, delete-one jackknife, Jackknife Yeniden Örnekleme	quantile regression, median regression, distribution-free quantile regression, Kantil Regresyon (Nonparametric Varyantlar)	ordinary least squares, classical linear regression, linear regression, en küçük kareler regresyonu
קשורות	5	5	5
תקציר	The jackknife is a classical resampling method that estimates the bias and variance of a statistic by systematically recomputing it with one observation left out at a time. Introduced by Quenouille in 1956 and later reviewed by Miller in 1974, it predates the bootstrap and remains a simple, deterministic tool for assessing estimator stability.	Quantile regression, introduced by Koenker and Bassett in 1978, models a chosen conditional quantile (such as the median or the 25th and 75th percentiles) of a continuous outcome rather than its mean. Its nonparametric variants fit these quantile relationships without assuming a distribution for the errors, making them a robust complement to mean-based regression on skewed data.	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).