Re: Statistics

[Tuan V Nguyen <t.nguyen@garvan.unsw.edu.au>]

Hello Thang (Tha('ng ?),

	Ca'i case ma` Thang ne^u ra ra^'t ddo+n gia?n, nhu+ng 
ddu? no'i le^n su+. ca^`n thie^'t cho mo^.t "tu+ duy tho^'ng 
ke^" (I LIKE THIS TERM!). To^i pha?i no'i tha(?ng la` ba^y 
gio+` ai cu~ng ca^`n pha?i pha?i co' mo^.t TDTK ca?. Ho^`i 
xu+a, o^ng Plato co' no'i nhu+ the^' na`y: 

"Even a man of slow intellect who is trained and exercised 
in arithmetic, if he gets nothing else from it, will at least 
improve and become sharper than before"

Kho^ng ca^`n gi` pha?i bi`nh lua^.n the^m!

	Ga^`n dda^y co' mo^.t tay thuo^.c ha`ng "da^n cho+i" 
dda~ ddi.nh nghi~a tho^'ng ke^ nhu+ sau:

	"Statistics is like a bikini, what it reveals is 
interesting, what it conceals is vital." 

	Ca'c ba'c tha^'y ddu'ng kho^ng?

	Tro+? la.i chuye^.n cu?a anh Tha('ng no'i ve^` ti`nh 
tra.ng u+'ng du.ng tho^'ng ke^ be^n VN mi`nh. To^i tha^'y anh 
no'i ddu'ng la` TK chu+a ddu+o+.c du`ng ddu'ng mu+'c. Lu'c 
to^i ve^` tha(m nha` be^n VN va` co' ghe' tha(m tru+o+`ng Y, 
gave a talk there, ta'n do'c ve^` TK va` bie^'t la` nhie^`u 
ngu+o+`i cu~ng ddu+o+.c go+?i ddi ho.c ca'c kho'a nga('n ha.n 
TK be^n Thailand. Thu' tha^.t vo+'i ca'c ba'c, to^i nghe xong 
ma` "no'ng ma(.t"  va` buo^`n. "No'ng ma(.t" la` vi` cha(?ng 
le~ da^n mi`nh co' tie^'ng gio?i toa'n ma` la.i ddi ho.c 
toa'n tu+` tha(`ng mo.i Thailand a` ? (Xin lo^~i ca'c anh 
chi. ddang ho.c be^n TL). Buo^`n la` vi` mi`nh tha^'y ba^'t 
lu+.c, kho^ng ddu? tie^`n ba.c resource dde^? giu'p ddo+? 
ddo^`ng nghie^.p be^n a^'y. Hy vo.ng nhu+~ng ngu+o+`i nhu+` 
anh Tha('ng will make a difference.

	Tha^.t ra co' hai loa.i TK: mathematical statistics va` 
applied statistics. Math Stat ca^`n pha?i co' tri`nh ddo^. 
toa'n vu+~ng va`ng va` kha' cao mo+'i la`m ddu+o+.c. Co`n 
applied stat thi` de^~ nhu+ "a(n co+m su+o+`n" vi` chi? ca^`n 
ca(n ba?n toa'n so+ so+ la` OK ro^`i. Tuy nhie^n ca'i  
challenge cu?a applied stat la` interpretation va` u+'ng 
du.ng mo^.t ca'ch wisely. 

	Tua^'n

At 03:23 AM 7/14/97 -0500, you wrote:
>Hi anh Tua^'n (NSW) et al
>Bu+~a tru+o+'c anh Tua^'n co' cho ra(`ng nowadays Y ho.c la` mo^.t
>combination  giu+~a Knowlegde va` Stat. To^i tha^'y y' kie^'n ddo' la`
>chi'nh xa'c. Ngu+o+`i Ba'c sy~ muo^'n la`m research thi` pha?i am
>hie^?u Stat, pha?i co' tu+ duy Tho^'ng ke^ ( Statistical thingking)(
>Ne^'u anh ta chi? chu+~a be^.nh tho^i thi` co' the^? kho^ng
>ca^`n). Da'ng tie^'c la` o+? nha` Stat chu+a ddu+o+.c chu' y' ddu'ng
>mu+'c . Va^~n co`n nhie^`u ca'c vi. BS ly' lua^.n : Thuo^'c A cho 100
>ngu+o+`i uo^'ng thi` 60 kho?i, thuo^'c B chi? co' 58 ngu+o+`i
>kho?i. Va^.y thuo^'c A to^'t ho+n thuo^'c B. Hoa(.c: To^i co' trie^.u
>chu+'ng A ma` kho^ng bi. be^.nh B, bo^' to^i va` ca? o^ng to^i cu~ng
>the^'. Va^.y trie^.u chu+'ng A kho^ng co' lie^n quan to+'i be^.nh B.
>Ca'c vi. BS thu+o+`ng ghe't va` so+. Stat. Thu+.c ra ddo' la` mo.^t
>mo^n ho.c thu' vi.  Kho^ng ca^`n nhie^`u background ve^` Toa'n va^~n
>hie^?u to^'t ddu+o+.c. Co' mo^.t paradox sau dda^y elementery but
>interesting.