Question

图中显示 Ms. Jordan 英语班学生家庭中孩子人数的分布。这个分布中，每个家庭孩子人数的中位数是

The graph shows the distribution of the number of children in the families of the students in Ms. Jordan's English class. The median number of children in the family for this distribution is

$1$

$2$

$3$

$4$

$5$

答案：D

知识点：中位数（数据）数据与图表解读

难度评级：960

解答：

图中有 $2$ 个家庭有 $1$ 个孩子， $1$ 个家庭有 $2$ 个， $2$ 个家庭有 $3$ 个， $2$ 个家庭有 $4$ 个， $6$ 个家庭有 $5$ 个，总共 $2 + 1 + 2 + 2 + 6 = 13$ 个家庭。

中位数是按顺序排列的第 $7$ 个值。列出家庭孩子人数后，第 $7$ 个值是 $4$ 。

所以正确答案是 D。

The graph gives $2$ families with $1$ child, $1$ with $2,$ $2$ with $3,$ $2$ with $4,$ and $6$ with $5,$ for $2 + 1 + 2 + 2 + 6 = 13$ families.

The median is the $7$ th value in order. Listing the family sizes, the $7$ th value is $4.$

Thus, the correct answer is D .

1995 AMC 8 第 19 题

答案：D

难度评级：960

解答：

其他年份的第 19 题