Abstract
In the survey teaching materials of China, deducing Bessel mean square error formula is all based on survey values with same mathematical expectation. These methods aren’t perfect. So, based on survey values without same mathematics expectation to prove Bessel mean square error formula is very necessary. Therefore, considering different mathematical expectation, it is meaningful that this paper has perfectively deduced Bessel mean square error formula.
Highlights
INTRODUCTIONC in survey teaching materials of China, we often select survey values with same mathematics expectation [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18], and
Bessel mean square error formula RT v v v m= ± [vv] n −1 (1)is a sort of basic formula about survey error
E ( ) mean square error formula based on survey values with different mathematics expectation cannot be deduced
Summary
C in survey teaching materials of China, we often select survey values with same mathematics expectation [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18], and. A generally survey values with different mathematics expectation are not selected. R ( ) are all national programming teaching materials of Chinese common higher education, and literatures [12,13,15,17] are. E ( ) mean square error formula based on survey values with different mathematics expectation cannot be deduced
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