การแจกแจงปรกต, สำหร, บทฤษฎ, ความน, าจะเป, งกฤษ, normal, distribution, เป, นการแจกแจงความน, าจะเป, นของค, าของต, วแปรส, มท, เป, นค, าแบบต, อเน, อง, โดยท, าของต, วแปรส, มม, แนวโน, มท, จะม, าอย, ใกล, บค, หน, เร, ยกว, าค, าม, ชฌ, กราฟแสดงค, าฟ, งก, นความหนาแน, pro. sahrbthvsdikhwamnacaepn karaeckaecngprkti xngkvs normal distribution epnkaraeckaecngkhwamnacaepnkhxngkhakhxngtwaeprsumthiepnkhaaebbtxenuxng odythikhakhxngtwaeprsummiaenwonmthicamikhaxyuikl kbkha hnung eriykwakhamchchim krafaesdngkhafngkchnkhwamhnaaenn probability density function caepnrupkhlayrakhngkhwa hruxeriykwa Gaussian function odykhafngkchnkhwamhnaaennkhxngkaraeckaecngprkti idaekfngkchnkhwamhnaaennkhxngkhwamnacaepnThe red line is the standard normal distributionfngkchnaeckaecngsasmColors match the image abovesykrn N m s 2 displaystyle mathcal N mu sigma 2 twaepresrim m R mean location s2 gt 0 variance squared scale fngkchnkhacun x Rpdf 1 2 p s 2 e x m 2 2 s 2 displaystyle tfrac 1 sqrt 2 pi sigma 2 e frac x mu 2 2 sigma 2 cdf 1 2 1 erf x m 2 s 2 displaystyle frac 1 2 Big 1 operatorname erf Big frac x mu sqrt 2 sigma 2 Big Big khaechliy mmthythan mthanniym mkhwamaeprprwn s2khwameb 0khwamodngswnekin 0exnothrpi 1 2 ln 2 p e s 2 displaystyle tfrac 1 2 ln 2 pi e sigma 2 mgf exp m t 1 2 s 2 t 2 displaystyle exp mu t tfrac 1 2 sigma 2 t 2 cf exp i m t 1 2 s 2 t 2 displaystyle exp i mu t tfrac 1 2 sigma 2 t 2 Fisher information 1 s 2 0 0 1 2 s 4 displaystyle begin pmatrix 1 sigma 2 amp 0 0 amp 1 2 sigma 4 end pmatrix f x 1 2 p s 2 e x m 2 2 s 2 displaystyle f x tfrac 1 sqrt 2 pi sigma 2 e frac x mu 2 2 sigma 2 ody x aethntwaeprsum pharamietxr m aesdngkhamchchim aela s 2 khuxkhakhwamaeprprwn variance sungepnkhathiichbxkprimankarkracaykhxngkaraeckaecng karaeckaecngprktithimikha m 0 aela s 2 1 cathukeriykwa karaeckaecngprktimatrthankaraeckaecngprktiepnkaraeckaecngthiednthisudinthangwichakhwamnacaepnaelasthitisastr sungkmacakhlay ehtuphl 1 sungkrwmthungphlcakthvsdibthkhidcakdklang central limit theorem thiklawwa phayitsphaphthw ipaelw khaechliycakkarsumkhakhxngtwaeprsumxisracakkaraeckaecngid thimikhaechliyaelakhakhwamaeprprwncakd thacanwnkarsumnnihyphx aelwkhaechliynncamikaraeckaecngpramanidepnkaraeckaecngprktilksnathisakhykhxngkaraeckaecngprkti aekikhf x gt 0 displaystyle f x gt 0 thukkhakhxng x displaystyle x f x displaystyle f x ldlngeruxy thakha x displaystyle x hangcak m displaystyle mu ephimkhuneruxy f x displaystyle f x smmatrthi m displaystyle mu khux f m x f m x displaystyle f mu x f mu x thukkha x displaystyle x emux x m displaystyle x mu aelw f x displaystyle f x camikhasungsud aela m displaystyle mu mikhaethakbmthythan kb thanniym tha s displaystyle sigma ldlng swnokhngcaaekhblngdwy phunthiitswnokhngrahwangm s displaystyle mu sigma kb m s 0 68 displaystyle mu sigma 0 68 m 2 s displaystyle mu 2 sigma kb m 2 s 0 95 displaystyle mu 2 sigma 0 95 m 3 s displaystyle mu 3 sigma kb m 3 s 0 99 displaystyle mu 3 sigma 0 99 xangxing aekikh Casella George Berger Roger L 2001 Statistical inference 2nd ed Duxbury ISBN 0 534 24312 6 duephim aekikhkaraeckaecngprktihlaytwaepr bthkhwamekiywkbkhnitsastrniyngepnokhrng khunsamarthchwywikiphiediyidodyephimkhxmul duephimthi sthaniyxy khnitsastrekhathungcak https th wikipedia org w index php title karaeckaecngprkti amp oldid 7815332, wikipedia, วิกิ หนังสือ, หนังสือ, ห้องสมุด,