
解析几何与统计学综合测试
Quiz
•
Mathematics
•
12th Grade
•
Hard
Jinhan Ling
Used 1+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
解析几何中,直线方程式y−y1=m(x−x1)中,斜率m的计算公式是?
m = (x1 - x2) / (y1 - y2)
m = (y1 - y2) / (x1 - x2)
m = (x2 - x1) / (y2 - y1)
m = (y2 - y1) / (x2 - x1)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
统计学中,平均数的计算公式是?
x = ∑(fi * xi) / ∑fi
x = ∑(xi - x̄) / ∑fi
x = ∑(xi) / ∑fi
x = ∑(xi - x̄) / ∑(fi)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
解析几何中,圆的标准式中,r代表什么?
半径
直径
周长
面积
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
统计学中,众数的计算公式是?
L + dt / (d1 * d2)
L + dt / (d1 - d2)
L + dt / (d1 + d2)
L + dt * (d1 + d2)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
解析几何中,点到直线的距离公式中,A、B、C分别代表什么?
系数
常数
斜率
坐标
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
统计学中位数的计算公式中Fn代表的是?
中位数组上一组的累积频数
组距
中位数组的频数
下组界
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
解析几何中,两直线的夹角θ的tan值计算公式是?
tanθ = (m2 - m1) / (1 + m2m1)
tanθ = (m2 + m1) / (1 - m2m1)
tanθ = (m1 + m2) / (1 - m2m1)
tanθ = (m1 - m2) / (1 + m2m1)
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