> For the complete documentation index, see [llms.txt](https://docs.ngsurvey.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ngsurvey.com/fr/form-management/reports/tendances-historiques.md).
# Tendances historiques
## 📆 Quelles sont les tendances historiques ?
Les tendances historiques vous permettent de visualiser, sur une période donnée, l'évolution des réponses de vos répondants.
Grâce aux tendances historiques, vous pouvez observer comment les réponses de vos répondants évoluent sur une période en jours, mois ou années. De cette manière, vous pouvez comparer des indicateurs clés comme le NPS, les scores d’évaluation et repérer toute variation importante sur une période donnée.
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