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Độ Lệch Chuẩn (Standard Deviation) Là Gì? Ý Nghĩa Và Công Thức Tính

Độ lệch chuẩn là gì? Đây được biết đến là kiến thức quan trọng trong toán học. Nó liên quan đến việc tính toán thống kê và báo cáo cũng như được áp dụng vào trong lĩnh vực đầu tư phân tích tài chính.
Tuy nhiên nhiều người vẫn chưa hiểu rõ tính chất, ý nghĩa, cách tính của độ lệch chuẩn. Vì vậy, đừng bỏ qua những kiến thức quan trọng trong bài viết dưới đây của VNCash24h nhé.

Độ Lệch Chuẩn Là Gì?

Độ lệch chuẩn trong tiếng anh còn gọi là Standard Deviation. Đây là đại lượng dùng để phản ánh độ phân tán của các giá trị trong bộ dữ liệu.
Nói cách khác, độ lệch chuẩn dùng để đo mức độ phân tán của một tập dữ liệu đã được lập thành bảng tần số. Nó thể hiện sự biến thiên của giá trị trong một thời điểm phản ánh xu thế của sự thay đổi.
Trong tài chính, độ lệch chuẩn là một phép đo thống kê. Khi áp dụng tỉ lệ hoàn vốn hàng năm của một khoản đầu tư, nó làm sáng tỏ lịch sử biến động của khoản đầu tư đó.
Còn đối với lĩnh vực tài chính, Standard Deviation là một trong những biện pháp đo lường rủi ro cơ bản. Các nhà quản lý, phân tích rủi ro, chuyên gia chiến lược đều áp dụng độ lệch chuẩn để ước lượng trước khi đưa ra bản kế hoạch.
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