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nguyên lý thống kê

BÀI TẬP
Thời gian làm việc Tần số (số người) Tần suất (%)
Dưới 1 năm 20
Từ 1 đến dưới 3 91
Từ 3 đến 5 năm 68
Trên 5 năm 145
Lập bảng tần số cho bảng dữ liệu sau

KẾT QUẢ
Số lượng tiểu luận
sinh viên có khả
năng viết trong 1
ngày
Số sinh
viên
7-9 12
9-11 23
11-13 86
13-15 55
15-17 29

2.1. BẢNG TẦN SỐ VÀ TẦN SỐ TÍCH LŨY CHO DỮ LIỆU ĐỊNH LƯỢNG
Bài tập: Lập bảng tần số và tần số tích lũy cho dữ liệu sau:
Giả ddinjhj một thống kê về khả năng giải đề môn thống kê kinh doanh của sinh viên ĐH Nguyễn Tất
Thành có kết quả như sau. Hãy lập bảng tần số và tần số tích lũy cho dữ liệu này
Số lượng tiểu luận sinh viên có khả
năng viết trong 1 ngày
Số sinh viên
7-9 12
9-11 23
11-13 86
13-15 55
15-17 29

2.3. BIỂU ĐỒ THÂN LÁ
Là một công cụ hữu hiệu để tóm lược và trình bày dữ liệu mà vẫn
giúp người xem thấy được cách thức phân tán của dữ liệu gốc một
cách chi tiết
Quy tắc: Những con số được tách thành 2 phần THÂN và LÁ.
 Các số đứng đầu là Thân
 Các số đứng sau là Lá (có thể là 1 hoặc 2 chữ số (tương ứng hàng
chục và hang đơn vị

Presentation.pptx

Presentation.pptx

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Presentation.pptx

1. BÀI TẬP Thời gian làm việc Tần số (số người) Tần suất (%) Dưới 1 năm 20 Từ 1 đến dưới 3 91 Từ 3 đến 5 năm 68 Trên 5 năm 145 Lập bảng tần số cho bảng dữ liệu sau

2. KẾT QUẢ Số lượng tiểu luận sinh viên có khả năng viết trong 1 ngày Số sinh viên 7-9 12 9-11 23 11-13 86 13-15 55 15-17 29

3. 2.1. BẢNG TẦN SỐ VÀ TẦN SỐ TÍCH LŨY CHO DỮ LIỆU ĐỊNH LƯỢNG Bài tập: Lập bảng tần số và tần số tích lũy cho dữ liệu sau: Giả ddinjhj một thống kê về khả năng giải đề môn thống kê kinh doanh của sinh viên ĐH Nguyễn Tất Thành có kết quả như sau. Hãy lập bảng tần số và tần số tích lũy cho dữ liệu này Số lượng tiểu luận sinh viên có khả năng viết trong 1 ngày Số sinh viên 7-9 12 9-11 23 11-13 86 13-15 55 15-17 29

4. 2.3. BIỂU ĐỒ THÂN LÁ Là một công cụ hữu hiệu để tóm lược và trình bày dữ liệu mà vẫn giúp người xem thấy được cách thức phân tán của dữ liệu gốc một cách chi tiết Quy tắc: Những con số được tách thành 2 phần THÂN và LÁ.  Các số đứng đầu là Thân  Các số đứng sau là Lá (có thể là 1 hoặc 2 chữ số (tương ứng hàng chục và hang đơn vị