皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【单选题】
直方图是概率统计中经常会使用到的一种统计图表，直方图的绘制要基于统计调查的数据，其中每一组数据的相对频数是( )。
A.
该组数据的均值除以样本容量
B.
该组数据的频数除以样本均值
C.
该组数据的频数除以样本容量
D.
该组数据的均值除以样本均值
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【单选题】What happens when teachers pay too much attention to the psychology of their lessons?
A.
They find that the children dislike the lessons.
B.
They tend to blame students for their failure in teaching.
C.
They do not pay enough attention to the actual lessons.
D.
They no longer want to teach children history.
查看完整题目与答案
【单选题】When teachers are mentioned to act as a facilitator, they should be acting
A.
easily.
B.
familiarly.
C.
fast.
D.
helpfully.
查看完整题目与答案
【单选题】Under a fixed exchange rate system, the government bears the responsibility to ensure that the BOP is near zero. If the sum of the current and capital accounts do not approximate zero, the government ...
A.
surplus; sell
B.
surplus; buy
C.
deficit; sell
D.
deficit; buy
查看完整题目与答案
【单选题】______ is a format in which four teams compete on a different motion for every round. Two teams are on the propositional side and two teams are on the oppositional side. The adjudicator must rank the ...
A.
POI
B.
AA
C.
BP
D.
AP
查看完整题目与答案
【单选题】大音量必须在正确的呼吸发生状态下，有控制地进行。 大音量训练，要求是（ ） 。
A.
大而不喊
B.
大而不尖
C.
尖而不刺
D.
强弱适宜
查看完整题目与答案
【判断题】In any purchasing organization, two major problems must first be considered:1. The first issue has to do with where the purchasing function should be located in the organization. 2. The second issue i...
A.
正确
B.
错误
查看完整题目与答案
【单选题】Tom ______ have met us three times last year, but' the first two meetings were canceled.
A.
will
B.
should
C.
had
D.
must
查看完整题目与答案
【单选题】When teachers teach pronunciation to students， which suggestion is useless?
A.
Use hands and arms to conduct choral pronunciation practice.
B.
Move around the classroom when doing choral practice.
C.
Try to use visual aids.
D.
Rely on explanations.
查看完整题目与答案
【简答题】—Guess what？I came first in that contest. —Great！You ________ a lot during the past two weeks. A．must practise B．should practise C．should have practised D．must have practised
查看完整题目与答案
【单选题】What happen when teachers focus too much attention to the psychological method of their lessons?
A.
Education of children becomes the responsibility of psychologists.
B.
They neglect the actual lessons.
C.
Children dislike their lessons.
D.
They dare not to recount stories about violent battles.
查看完整题目与答案
相关题目：
【单选题】What happens when teachers pay too much attention to the psychology of their lessons?
A.
They find that the children dislike the lessons.
B.
They tend to blame students for their failure in teaching.
C.
They do not pay enough attention to the actual lessons.
D.
They no longer want to teach children history.
查看完整题目与答案
【单选题】When teachers are mentioned to act as a facilitator, they should be acting
A.
easily.
B.
familiarly.
C.
fast.
D.
helpfully.
查看完整题目与答案
【单选题】Under a fixed exchange rate system, the government bears the responsibility to ensure that the BOP is near zero. If the sum of the current and capital accounts do not approximate zero, the government ...
A.
surplus; sell
B.
surplus; buy
C.
deficit; sell
D.
deficit; buy
查看完整题目与答案
【单选题】______ is a format in which four teams compete on a different motion for every round. Two teams are on the propositional side and two teams are on the oppositional side. The adjudicator must rank the ...
A.
POI
B.
AA
C.
BP
D.
AP
查看完整题目与答案
【单选题】大音量必须在正确的呼吸发生状态下，有控制地进行。 大音量训练，要求是（ ） 。
A.
大而不喊
B.
大而不尖
C.
尖而不刺
D.
强弱适宜
查看完整题目与答案
【判断题】In any purchasing organization, two major problems must first be considered:1. The first issue has to do with where the purchasing function should be located in the organization. 2. The second issue i...
A.
正确
B.
错误
查看完整题目与答案
【单选题】Tom ______ have met us three times last year, but' the first two meetings were canceled.
A.
will
B.
should
C.
had
D.
must
查看完整题目与答案
【单选题】When teachers teach pronunciation to students， which suggestion is useless?
A.
Use hands and arms to conduct choral pronunciation practice.
B.
Move around the classroom when doing choral practice.
C.
Try to use visual aids.
D.
Rely on explanations.
查看完整题目与答案
【简答题】—Guess what？I came first in that contest. —Great！You ________ a lot during the past two weeks. A．must practise B．should practise C．should have practised D．must have practised
查看完整题目与答案
【单选题】What happen when teachers focus too much attention to the psychological method of their lessons?
A.
Education of children becomes the responsibility of psychologists.
B.
They neglect the actual lessons.
C.
Children dislike their lessons.
D.
They dare not to recount stories about violent battles.
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题