D”P gva¨wgK cwimsL¨vb-cÖ_g cÎ
50
2.19
KvÛ I cÎ ev kvLv I cÎK mgv‡ek Stem and Leaf Display
kvLv I cÎK mgv‡ek MYmsL¨v wb‡ek‡bi Av‡iKwU ZvwjKv wfwËK c×wZ| GB c×wZ‡Z Avgiv Z_¨ wb‡ekb‡K mn‡R Ges Aí Avqv‡m cÖKvk Ki‡Z cvwi| c×wZwU e„‡ ÿi kvLv Ges kvLvwš^Z c·Ki m`„k| GwU cÖ_g D™¢veb K‡ib UzwK (Tukey) 1977 mv‡j| cÎK (Leaf): kvLv I cÎK mgv‡e‡k cÎK (ev cvZv) n‡jv Z_¨mvwii †h †Kvb msL¨vgv‡bi †kl AsK| †hgb-27 hw` Z_¨mvwii GKwU gvb nq Z‡e 7 n‡e cÎK| kvLv (Stem): kvLv I cÎK mgv‡e‡k kvLv n‡jv Z_¨mvwii †h †Kvb msL¨vgv‡bi cÖ_g GK ev GKvwaK AsK| †hgb-27 Z_¨mvwii GKwU gvb n‡j 2 kvLv n‡e| kvLv I cÎK mgv‡e‡k kvLvi gvb¸‡jv Dj¤^fv‡e (Vertically) GKwU Av‡iKwUi wb‡P e‡m| Avi cÖ‡Z¨K kvLvi mv‡_ mvgÄm¨c~Y© cÎK¸‡jv H kvLvi cv‡k G‡Ki ci GK Avbyf~wgKfv‡e GKwU mvwi‡Z em‡e| G‡ÿ‡Î c·Ki gvb¸‡jv †QvU †_‡K eo µ‡g mvRv‡bv nq|
2.20
kvLv I cÎK mgv‡e‡ki ¸iæZ¡ Importance of Stem and Leaf Display
(i) MYmsL¨v wb‡ek‡bi MVb Rvb‡Z kvLv I cÎK web¨vm Avek¨K| (ii) Z_¨mvwii cwimi wbY©q Ki‡Z GwU Kvh©Ki f~wgKv iv‡L| (iii) Z_¨mvwii gvb¸‡jvi †K›`ªxq cÖeYZv cwigv‡ci Rb¨ kvLv I cÎK web¨vm ¸iæZ¡c~Y© Ae`vb iv‡L| (iv) •jwLK Dc¯’vc‡b kvLv I cÎK web¨vm AZ¨šÍ Kvh©Ki f~wgKv cvjb K‡i| D`vniY: wb‡gœ 20 Rb Qv‡Îi †Kvb GKwU cixÿvi cÖvß b¤^i †`Iqv nj: 65, 70, 85, 45, 50, 72, 60, 52, 60, 32, 80, 42, 55, 60, 65, 20, 45, 55, 68, 72 D³ Z_¨‡K kvLv I cÎK wP‡Î Dc¯’vcb Ki| mgvavb: GLv‡b, e„nËg Z_¨ msL¨v = 85 Ges ÿz`Z ª g Z_¨ msL¨v = 20 kvLv I cÎK wPÎ kvLv cÎK MYmsL¨v 2 3 4 5 6 7 8
0 2 2 0 0 0 0
5 2 0 1 5
5 5 5 05 5 8 2
mnvqK (Key): 4|5 Øviv eySvq 45 D”Pgva¨wgK cwimsL¨vb
1 1 3 4 6 3 2
†gvU = 20