Page 153 - Bangladesh_classwiz_BOOK2018_rev_Neat

D³ K¨vjKz‡jUiwU, ˆiwLK ev †h‡Kv‡bv g‡Wj e¨envi Kivi ci bZzb gvb Abygvb Ki‡Z mvnvh¨ K‡i| †hgb, 15

†m‡KÛ nvU©weU Gi gvb 30 Gi Rb¨ 60 †m‡KÛ nvU©weU Gi gvb KZ n‡e Zv wbY©q Kiv hvq, Zvi R‡b¨
C30TR45= Ges Dc‡ii 2q w¯ŒbwU †`Lv hv‡e| A_©vr 15 †m‡KÛ Gi nvU©weU 30 n‡j,
60 †m‡KÛ Gi nvU©weU n‡e 111.5294118.

̂
̂
wecixZ fv‡e, 60 †m‡KÛ nvU©weU Gi Rb¨ 15 †m‡KÛ nvU©weU †ei Kiv hvq, Zvi Rb¨ ¯’‡j wb‡Z n‡e| GLb
ïaygvÎ 15 †m‡K‡Ûi nvU©weU Gi Mo Rvb‡Z n‡j, OPTN ZvwjKvi 2q w¯Œ‡b wM‡q, 2(Variable) evUb †P‡c
1( ) evUb Pvc‡Z n‡e Ges = evUb w`‡Z n‡e, Ges wb‡Pi 1g w¯ŒbwU †`Lv hv‡e|

Ges GKB fv‡e 60 †m‡K‡Ûi nvU©weU Gi Mo Rvb‡Z CTR27= evUb Pvc‡j Dc‡ii 2q w¯Œb
†`Lv hv‡e|GLb 60 †m‡K‡Ûi nvU©we‡Ui M‡oi mv‡_ 15 †m‡K‡Ûi nvU©we‡Ui M‡oi cv_©K¨ †`Lvi Rb¨ CT
R27P4= wb‡Pi 1g w¯ŒbwU †`Lv hv‡e|

Avevi, TR21= Pvc‡j Dc‡ii 2q w¯Œb †`Lv hv‡e|

14.2 Ab¨vb¨ wiM‡ikb g‡Wj

ˆiwLK g‡W‡ji g‡Zv, Ab¨vb¨ g‡W‡jI, ClassWiz K¨vjKz‡jUi kyaygvÎ I Gi gvb †ei K‡i, কিন্তু wØNvZ
g‡W‡j Gi gvb mn †ei nq| (`yB-Pj‡Ki Ab¨ g‡Wj evQvB Ki‡jI cÖ‡ekK…Z gvb I Kjv‡g msiwÿZ _v‡K,
hw` bv 1-PjK evQvB ev w6 w`‡q bZzb fv‡e statistics mode cÖ‡ek Kiv†bv nq| †m‡ÿ‡Î cybivq WvUv
cÖ‡ek Kiv‡Z n‡e|)

K¨vjKz‡jU‡ii ‡iRvë wewfbœ g‡W‡j wewfbœ †`Lv‡e, ZvB Av‡M †_‡K wbwðZ fv‡e Rvb‡Z n‡e ‡Kv‡bv g‡Wj wb‡q
KvR Ki‡Z n‡e| `yB-Pj‡Ki 1g g‡Wj ev ‰iwLK g‡Wj ev` w`‡q evKx g‡Wj¸‡jv A‰iwLK m¤úK© wb‡q KvR K‡i

wKš‘ g‡Wj¸‡jv A‰iwLK bq| wKQ g‡Wj eµ-‰iwLK (Curvelinear) bv‡g cwiwPZ, KviY Zv‡`i cÖ`wk©Z wPÎ eµ
z
nq|

Ab¨vb¨ g‡Wj¸‡jv†Z c~e©i g‡ZvB, Av‡M I Kjv‡g DcvË ewm‡q `yB-Pj‡Ki wewfbœ djvdj cvIqv hvq Ges
Regression e¨envi K‡i GKwU Pj‡Ki bZzb gv‡bi Rb¨ Ab¨ Pj‡Ki bZzb gvb †ei Kiv hvq|

14.3 m¤¢vebv (Probability)

m¤¢vebv kãwU Avgv‡`i ev¯Íe Rxe‡bi mv‡_ wg‡k Av‡Q| Avgiv K_vq K_vq m¤¢vebv e¨envi K‡i _vwK, †hgb, AvR
e„wó n‡e wKbv, evsjv‡`k wµ‡KU `j AvR wRZ‡e wKbv ev jUvwi‡Z wRZe wKbv BZ¨vw`| ClassWiz K¨vjKz‡jUi

m¤¢vebv wbY©‡q A‡bK mnvqK, we‡kl K‡i hLb mgm¨vwUi mgv‡ek ev web¨vm eySv hvq|
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