Annexe 3: Résultats du test
d'égalité des moyennes _ Student test
Two-Sample T-Test and CI: Janvier;
Période
|
Two-sample T Période N
|
for Janvier
Mean StDev
|
SE
|
Mean
|
|
1 30
|
15,7
|
24,4
|
|
4,4
|
|
2 30
|
13,4
|
21,9
|
|
4,0
|
|
Difference =
|
mu (1)
|
- mu
|
(2)
|
|
Estimate for difference: 2,28000
95% CI for difference: (-9,70291; 14,26291)
T-Test of difference = 0 (vs not =): T-Value = 0,38 P-Value =
0,705 DF = 57
Two-Sample T-Test and CI: Février;
Période
Two-sample T for Février
Période N Mean StDev SE Mean
|
1
|
30
|
39,4
|
37,7
|
6,9
|
|
2
|
30
|
31,0
|
37,6
|
6,9
|
Difference = mu (1) - mu (2)
Estimate for difference: 8,44667
95% CI for difference: (-11,03078; 27,92411)
T-Test of difference = 0 (vs not =): T-Value = 0,87 P-Value =
0,389 DF = 57
Two-Sample T-Test and CI: Mars;
Période
Two-sample T for Mars
SE
Période N Mean StDev Mean
|
1
|
30
|
86,6
|
61,9
|
11
|
|
2
|
30
|
69,9
|
57,0
|
10
|
Difference = mu (1) - mu (2)
Estimate for difference: 16,6867
95% CI for difference: (-14,0880; 47,4613)
T-Test of difference = 0 (vs not =): T-Value = 1,09 P-Value =
0,282 DF = 57
Two-Sample T-Test and CI: Avril;
Période
Two-sample T for Avril
SE
Période N Mean StDev Mean
|
1 30
|
136,8
|
58,0
|
|
11
|
|
2 30
|
132,0
|
84,7
|
|
15
|
|
Difference =
|
mu (1)
|
- mu
|
(2)
|
|
Estimate for difference: 4,88333
95% CI for difference: (-32,73273; 42,49940)
T-Test of difference = 0 (vs not =): T-Value = 0,26 P-Value =
0,795 DF = 51
Two-Sample T-Test and CI: Mai; Période
Two-sample T for Mai
SE
Période N Mean StDev Mean
|
1 30
|
198,7
|
60,1
|
|
11
|
|
2 30
|
206,3
|
89,4
|
|
16
|
|
Difference =
|
mu (1)
|
- mu
|
(2)
|
|
Estimate for difference: -7,57000
95% CI for difference: (-47,07590; 31,93590)
T-Test of difference = 0 (vs not =): T-Value = -0,38 P-Value =
0,702 DF = 50
Two-Sample T-Test and CI: Juin;
Période
Two-sample T for Juin
SE
Période N Mean StDev Mean
|
1 30
|
367
|
150
|
|
27
|
|
2 30
|
343
|
151
|
|
28
|
|
Difference =
|
mu (1)
|
- mu
|
(2)
|
|
Estimate for difference: 23,7767
95% CI for difference: (-54,1585; 101,7119)
T-Test of difference = 0 (vs not =): T-Value = 0,61 P-Value =
0,544 DF = 57
Two-Sample T-Test and CI: Juillet;
Période
Two-sample T for Juillet
SE
Période N Mean StDev Mean
|
1 30
|
151
|
154
|
|
28
|
|
2 30
|
126
|
103
|
|
19
|
|
Difference =
|
mu (1)
|
- mu
|
(2)
|
|
Estimate for difference: 24,9800
95% CI for difference: (-43,1228; 93,0828)
T-Test of difference = 0 (vs not =): T-Value = 0,74 P-Value =
0,465 DF = 50
Two-Sample T-Test and CI: Août;
Période
Two-sample T for Août
SE
Période N Mean StDev Mean
|
1 30
|
47,3
|
79,0
|
|
14
|
|
2 30
|
47,9
|
75,1
|
|
14
|
|
Difference =
|
mu (1)
|
- mu
|
(2)
|
|
Estimate for difference: -0,580000
95% CI for difference: (-40,449031; 39,289031)
T-Test of difference = 0 (vs not =): T-Value = -0,03 P-Value =
0,977 DF = 57
Two-Sample T-Test and CI: Septembre;
Période
Two-sample T for Septembre
SE
Période N Mean StDev Mean
1 30 84,4 62,1 11
2 30 129,4 88,9 16
Difference = mu (1) - mu (2)
Estimate for difference: -45,0867
95% CI for difference: (-84,8364; -5,3369)
T-Test of difference = 0 (vs not =): T-Value = -2,28 P-Value =
0,027 DF = 51
Two-Sample T-Test and CI: Octobre;
Période
Two-sample T for Octobre
SE
Période N Mean StDev Mean
1 30 137,4 69,9 13
2 30 153,8 76,2 14
Difference = mu (1) - mu (2)
Estimate for difference: -16,3433
95% CI for difference: (-54,1516; 21,4650)
T-Test of difference = 0 (vs not =): T-Value = -0,87 P-Value =
0,390 DF = 57
Two-Sample T-Test and CI: Novembre;
Période
Two-sample T for Novembre
Période N Mean StDev SE Mean
1 30 48,2 35,4 6,5
2 30 32,2 22,3 4,1
Difference = mu (1) - mu (2)
Estimate for difference: 16,0633
95% CI for difference: (0,7270; 31,3996)
T-Test of difference = 0 (vs not =): T-Value = 2,11 P-Value =
0,140 DF = 48
Two-Sample T-Test and CI: Décembre;
Période
Two-sample T for Décembre
Période N Mean StDev SE Mean
1 30 16,7 17,3 3,2
2 30 16,7 28,6 5,2
Difference = mu (1) - mu (2)
Estimate for difference: 0,053333
95% CI for difference: (-12,220659; 12,327326)
T-Test of difference = 0 (vs not =): T-Value = 0,01 P-Value =
0,993 DF = 47
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