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| التوقع، القيمة المتوقعة | |||
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| التباين لمتغير عشوائى | |||
| التوقع لمتغير عشوائى ؛متوسط لمتغير عشوائى | |||
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espérance : 35 phrases in 7 subjects |
| Demography | 6 |
| Health care | 3 |
| International Monetary Fund | 3 |
| Mathematics | 7 |
| Reliability | 4 |
| Statistics | 10 |
| United Nations | 2 |
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