KIEM TRA CHUONG III DAI SO 7

TRƯỜNG THCS VÕ THỊ SÁU KIỂM TRA CHƯƠNG III
TỔ: TOÁN – TIN MÔN: ĐẠI SỐ 7
Thời gian: 45 phút (không kể thời gian giao đề)

Họ và tên:……………………………........

Lớp: 7……


Điểm

Lời phê của thầy giáo

 Câu 1: (2 điểm)
Nêu các bước tình số trung bình cộng của một dấu hiệu.
Viết công thức tính số trung cộng của một dấu hiệu.
Câu 2: (7 điểm)
Điểm kiểm tra học kỳ I về môn toán của học sinh lớp 7A được ghi lại trong bảng sau:
10
9
6
7
8
9
9
9
8
7
10
10
10
8
7
4
7
6
8
7
9
8
8
8
8
10
10
5
9
9
6
7
9
10
8
9
10
9
8
6
5
4
9
9
10
8
10
9

Dấu hiệu ở dây là gì? Hãy nêu các giá trị khác nhau của dấu hiệu.
Lập bảng “Tần số” và nhận xét.
Tính số trung bình cộng và tìm mốt của dấu hiệu.
Vẽ biểu đồ đoạn thẳng.
BÀI LÀM:
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