Estadística

TALLA DE PANTALÓN
VARIABLE CUANTITATIVA DISCRETA

Xi | ni | fi | pi | Ni | Fi | Pi |
34 | 6 | 0,1 | 10% | 6 | 0,1 | 10% |
36 | 10 | 0,1667 | 16,67% | 16 | 0,2667 | 26,67% |
38 | 15 | 0,25 |25% | 31 | 0,5167 | 51,67% |
40 | 14 | 0,2333 | 23,33% | 45 | 0,75 | 75% |
42 | 8 | 0,1333 | 13,33% | 53 | 0,8833 | 88,33% |
44 | 1 | 0,0167 | 1,67% | 54 | 0,9 | 90% |
46 | 2 | 0,0333 | 3,33%| 56 | 0,9333 | 93,33% |
48 | 3 | 0,05 | 5% | 59 | 0,9833 | 98,33% |
50 | 0 | 0 | 0,00% | 59 | 0,9833 | 98,33% |
52 | 1 | 0,0167 | 1,67% | 60 | 1 | 100% |
TOTAL | 60 | 1 | 100,00% |   |   |  |

MEDIA:
X=204+360+570+560+336+44+92+144+5260=236260=39'367
MEDIANA:
42+442=43
MODA: 38
RANGO: 52-34=18
DESVIACIÓN MEDIA:
DM =32'202+33'67+20'505+8'862+21'064+4'633+13'266+25'899+12'63360=172'73460=2'88
VARIANZA:
VAR=172'828+113'367+28'03+5'61+55'46+21'465+87'993+223'586+159'59360
=14'465

DESVIACIÓN TÍPICA:
DT=14'465=3'80

COEFICIENTE DE VARIACIÓN:
CV=3'8039'367×100=9'65%CUARTILES:
Q₁=604=15 Q₁= 36
Q₂=2×604=30 Q₂= 38
Q3=3×604=45 Q₃= 40
DECILES: |
D₃=36+18-3638-36×2=18D₃= 38D₆=38+36-3840-38×2=36 D₆= 40 |
D₉=42+54-4244-42×2=54 D₉= 44 |

PERCENTILES:

P₂₇=36+16'2-3638-36×2=16'2P₂₇=38

P34=36+20'4-3638-36×2=20'4 P₃₄= 38


P82=40+49'2-4042-40×2=49'2 P₈₂= 42NOTAS DE LITERATURA CATALANA
VARIABLE CUANTITATIVA CONTÍNUA

  | ni | Ni | fi | Fi | pi | Pi |
[2,3) | 2 | 2 | 0,033 | 0,033 | 3,30% | 3,30% |
[3,4) | 6 | 8 | 0,1 | 0,13 | 10% | 13,30% |[4,5) | 24 | 32 | 0,4 | 0,533 | 40% | 53,30% |
[5,6) | 12 | 44 | 0,2 | 0,733 | 20% | 73,30% |
[6,7) | 6 | 50 | 0,1 | 0,833 | 10% | 83,30% |
[7,8) | 3 | 53 | 0,05 | 0,883 | 5% | 88,30% |...