Statistics

Páginas: 3 (559 palabras) Publicado: 28 de octubre de 2012
Marc Márquez Martín ESO 4ºA IES Universidad Laboral

Could you imagine playing a game without dice? Let's start talking about the die’s history. The dice aren't a modern invent, people used them alot of years ago. Egyptians invented something similar to the dice we know today in the year 2000 BC. They used them in magic ritual, for predicting the future and for putting curses. Can you imaginethat? An Egyptian throwing two dice and saying: Now you're forever damn. A curiosity about dice: If you add the number in one face to the number in the opposite face, you will always get 7. Forexample, 3+4=7. 3 and 4 are opposite faces.

1

4 6 1 1 6 5 5 2 1 2

3 6 3 5 4 1 4 4 3 6

2 6 4 4 4 3 2 2 5 3

3 2 2 5 2 2 6 2 3 3

2 3 1 3 5 2 1 6 3 3

3 3 6 5 2 4 6 4 5 2

1 1 4 4 2 4 16 5 3

4 1 6 4 6 4 4 1 6 5

1 5 3 6 5 6 2 1 5 5

6 3 5 6 6 3 2 1 3 5

Die Number 1 2 3 4 5 6

Tally

Frequency 14 17 20 16 16 17

□ □□ □ □□∟ □ □ □□ □ □ □‒ □ □ □‒ □ □□∟

2

Xi 1 2 34 5 6

Fi 14 17 20 16 16 17 100

Xi Fi 14 34 60 64 80 102 354

Xi 2 1 4 9 16 25 36

Xi 2 F i 14 68 180 256 400 612 1530

FI 14 31 51 67 83 100

Average

x ̄=

∑ f i⋅x i = 354 =3.54 ∑ fi 100

Variance

∑ f i⋅∑ x 2⋅̄ = 1530⋅3.54 2=2.77 i var = x
N 100

Standard deviation

σ √ variance=√ 2,77=1,66 σ 1.66 C.V = = =0.469=46.9 % x ̄ 3.54 Mode
mo=3

Coefficient of variation(C.V)

Median

me=3=Q 2

Q1 isthe 25 % of 100 so Q1=2because it ' s possition is the 25 Quartiles Q3 isthe 75 % of 10 so Q 3=5 because it ' s possition is the 75

3

On the contrary, number1 is the least repeated

Number 1 Number 2 Number 3 Number 4 Number 5 Number 6

We can't see it well, but number 3 is the most repeated

100 % ― 360º 14 % ― x

x=

360⋅14 =50.4º 100

100 %― 360º 17 % ― x 100 % ― 360º 20 % ― x 100 % ― 360º 16 % ― x

x=

360⋅17 =61.2º 100 360⋅20 =72º 100

x=

x=

360⋅16 =57.6º 100

4

20 18 16 14 12 10 8 6 4 2 0 1 2 3 4 5 6

5

To...
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