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EL KADIRI Achraf AD2

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EL KADIRI Achraf
EXERCICE 2 :
1)
Xi
89
89.6
89.7
89.8
89.9
90
90.1
90.2
90.3
90.4
92.2
ni
1
1
1
2
6
8
7
1
1
1
1
2) Ni : Effectifs cumulés |fi :Fréquence |Fi :Fréquences cumulés
Xi
89
89.6
89.7
89.8
89.9
90
90.1
90.2
90.3
90.4
92.2
ni
1
1
1
2
6
8
7
1
1
1
1
Ni fi(%) Fi(%)
1 3.33 3.33
2 3.33 6.66
3 3.33 9.99
5 6.66 16.65
11
20
36.65
19 26.66 63.31
26 23.33 86.64
27 3.33 89.97
28 3.33 93.3
29 3.33 96.63
30 3.33 99.96
**90 : le mode de la variable mesure.
**(N+1)/2=6 =>mediane Q2=90
**90.036 : la moyenne de la variable mesure
**0.2183 :la variance
**0.4672 : l’ecartype
3) Le mode, la médiane et la moyenne sont presque égaux.
EXERCICE 3 :
2)
Moy des prix (Y) = 411.2142
Moy de la surface (X)= 82.3214
Surface
(Xi)
28
50
106
196
55
190
110
60
48
35
86
65
32
52
40
260
70
117
90
30
105
52
80
60
140
20
100
28
PRIX_MILLIERS_EUROS
(Yi)
130
280
650
800
268
790
500
320
250
250
350
300
155
245
200
1500
325
950
378
78
375
200
270
295
990
85
495
85
(Xi-X̅ )
(yi-¥)
(Xi-X̅)²
(yi-¥)²
-54.3214
-32.3214
23.6786
113.6786
-27.3214
107.6786
27.6786
-22.3214
-34.3214
-47.3214
3.6786
-17.3214
-50.3214
-30.3214
-42.3214
177.6786
-12.3214
34.6786
7.6786
-52.3214
22.6786
-30.3214
-2.3214
-22.3214
57.6786
-62.3214
17.6786
-54.3214
-281.2142
-131.2142
238.7858
388.7858
-143.2142
378.7858
88.7858
-91.2142
-161.2142
-161.2142
-61.2142
-111.2142
-256.2142
-166.2142
-211.2142
1088.7858
-86.2142
538.7858
-33.2142
-333.2142
-36.2142
-211.2142
-141.2142
-116.2142
578.7858
-326.2142
83.7858
-326.2142
2950.814498
1044.672898
560.676098
12922.8241
746.458898
11594.6809
766.104898
498.244898
1177.958498
2239.314898
13.533
300.030898
2532.243298
919.387298
1791.100898
31569.6849
151.816898
1202.605298
58.9609
2737.528898
514.318898
919.387298
5.38889796
498.244898
3326.820898
3883.956898
312.532898
2950.814498
79081.42628
17217.16628
57018.65828
151154.3983
20510.30708
143478.6823
586916.7147
8320.030282
25990.01828
25990.01828
3747.166039
12368.59828
65645.71628
27627.16028
44611.43828
1185454.518
7432.888282
290290.1383
1103.183082
111031.7031
1311.468282
44611.43828
19941.45028
13505.74028
334993.0023
106415.7043
7020.060282
106415.7043
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