应《网络安全法》要求，自2017年10月1日起，未进行实名认证将不得使用互联网跟帖服务。为保障您的帐号能够正常使用，请尽快对帐号进行手机号验证，感谢您的理解与支持！

24小时热门版块排行榜    

Znn3bq.jpeg
小木虫论坛-学术科研互动平台 » 科研生活区 » 专业外语 » 艺术管理 » "mean velocity" and "average velocity"？
192/2返回列表上一页12
查看: 1965  |  回复: 18
只看楼主 @他人 存档 新回复提醒 (忽略) 收藏    在APP中查看

apollo911

木虫 (正式写手)

【答案】应助回帖

They are the same.
赞一下 回复此楼
11楼2013-08-23 19:09:02
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

不锈蝙蝠

金虫 (正式写手)

懵懂者
引用回帖:
11楼: Originally posted by apollo911 at 2013-08-23 19:09:02
They are the same.

In the paper I read, the "mean velocity" has a distribution along with y-axis which stands for the water depth from the river bed, while the "average velocity" was explained as "total discharge divided by the cross-section's area". So they seem not the same.
赞一下 回复此楼
makefulluseofmylife.
12楼2013-08-23 21:59:50
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

apollo911

木虫 (正式写手)

【答案】应助回帖

引用回帖:
12楼: Originally posted by 不锈蝙蝠 at 2013-08-23 21:59:50
In the paper I read, the "mean velocity" has a distribution along with y-axis which stands for the water depth from the river bed, while the "average velocity" was explained as & ...

‘total discharge divided by the cross-section's area’  I think this defination should be better.
赞一下 回复此楼
13楼2013-08-23 23:34:29
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

etshao

铜虫 (初入文坛)

【答案】应助回帖

mean在数学里面是指中位数
average就指咱们平时运算的均值。
仅供参考
赞一下 回复此楼
14楼2013-09-06 11:43:15
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

不锈蝙蝠

金虫 (正式写手)

懵懂者
引用回帖:
14楼: Originally posted by etshao at 2013-09-06 11:43:15
mean在数学里面是指中位数
average就指咱们平时运算的均值。
仅供参考

谢谢回帖。这里的mean应该不是中位数的解释。Anyway, thanks all the same.
赞一下 回复此楼
makefulluseofmylife.
15楼2013-09-06 15:38:44
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

匿名

用户注销 (小有名气)
本帖仅楼主可见
赞一下
16楼2013-12-17 05:47:44
已阅   申请SFL-EPI   回复此楼   编辑   查看我的主页

befair

铁杆木虫 (正式写手)

【答案】应助回帖

My three cents:
In general these two words should be equivalent in our daily life, in which we tend to say average more than mean. In scientific context there are however some distinctions to make. When it comes to data analysis, often average is referred to as arithmetic mean(even moving average), while in statistical terminology mean has a specific meaning, that is the expectation of a distribution. In this case one cannot say average any longer.

To come back to your question, my suggestions are as follows:
1. If you do data analysis "simplistically" on some velocity measurement values without statistical distributions involved, use average should be fine, or use arithmetic mean
2. If you try to model the velocity as a statistical distribution and then use the mean of (theoretical) distribution, I'd suggest you to stick to mean
Hope it helps
赞一下(1人) 回复此楼
Befairorbeaware
17楼2013-12-17 07:16:24
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

hijack520

金虫 (小有名气)

喵星达人

【答案】应助回帖

1.you don't need  "it"  here of "...o similar to another that I could not understand it accurately enough. ".  
2. you will use plural form of "terms" instead of singular form of "term" here of '...what exactly is the difference between these two term?...'
3. you will use singular form of "equal" instead of "equals" here of  '...Does "mean velocity" equals to "time-average velocity..."'

As to the question, as a terminlogy, to my point, a word definitely has clear connotation in a certain reserch filed. The difference can be figured out from published literatures of that research field.
赞一下 回复此楼
Dig,dig.~!
18楼2013-12-17 16:38:26
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

hijack520

金虫 (小有名气)

喵星达人

【答案】应助回帖

Also check wiki about "mean vs. average": http://en.wikipedia.org/wiki/Average
赞一下 回复此楼
Dig,dig.~!
19楼2013-12-17 16:54:59
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 不锈蝙蝠 的主题更新
192/2返回列表上一页12
普通表情 龙 兔 虎 猫
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 296求调剂 +6 汪！？！ 2026-04-08 6/300 2026-04-08 21:38 by 朱云虎202
[考研] 材料考研求调剂总分280 +30 mkjlz1 2026-04-06 35/1750 2026-04-08 21:25 by cyh—315
[考研] 一志愿南京航空航天大学 材料与化工329分求调剂 +11 Mr. Z 2026-04-05 12/600 2026-04-08 16:15 by luoyongfeng
[考研] 一志愿211，化学学硕，310分，本科重点双非，求调剂 +20 努力奋斗112 2026-04-07 21/1050 2026-04-08 14:54 by screening
[考研] 生物医药调剂｜SCI中科院三区一作+多项科研成果 +8 likangxing 2026-04-07 11/550 2026-04-08 00:02 by lys0704
[考研] 336材料与化工085600求调剂 +19 水星记infp 2026-04-05 22/1100 2026-04-07 21:11 by yongzhesheng
[考研] 生物工程求调剂 +13 喜欢还是不甘心 2026-04-05 13/650 2026-04-07 16:55 by Ecowxq666！
[考研] 考研调剂 +7 15615482637 2026-04-04 7/350 2026-04-06 22:56 by chenzhimin
[考研] 调剂 一志愿吉林大学357分 +5 .Starry. 2026-04-04 5/250 2026-04-06 09:28 by cql1109
[考研] 材料调剂 +7 dxy调剂 2026-04-04 7/350 2026-04-05 09:15 by 陌秋26
[考研] 083200 333求调剂 +3 十二！！ 2026-04-04 3/150 2026-04-05 08:28 by barlinike
[考研] 313求调剂 +3 海日海日 2026-04-04 3/150 2026-04-05 07:48 by 544594351
[考研] 求生物学学硕调剂——364分 +7 云朵遛弯指南 2026-04-04 7/350 2026-04-04 22:49 by zhyzzh
[考研] 材料调剂 +10 懒羊羊轻置玉臀 2026-04-02 11/550 2026-04-04 21:56 by laoshidan
[考研] 0835学硕299求调剂 08大类可接受 +5 useryy 2026-04-03 5/250 2026-04-04 20:07 by 蓝云思雨
[考研] 总分328生物与医药考数学求调剂 +7 aaadim 2026-04-02 9/450 2026-04-03 22:53 by syh9288
[考研] 350一志愿北京航空航天大学08500材料科学与工程求调剂 +5 kjnasfss 2026-04-03 5/250 2026-04-03 22:29 by 无际的草原
[考研] 本科985，专业0812分336求调剂 +4 莫莫很行 2026-04-03 4/200 2026-04-03 21:31 by zhq0425
[考研] 一志愿北京交通大学材料工程总分358 +4 cs0106 2026-04-03 4/200 2026-04-03 13:41 by 百灵童888
[考研] 调剂 +7 祉岷. 2026-04-02 7/350 2026-04-03 09:11 by 花呗还欠600
信息提示
关闭
请填处理意见
关闭