首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Time sampling means that researchers choose various time intervals for their observation. Intervals may be selected systematical
Time sampling means that researchers choose various time intervals for their observation. Intervals may be selected systematical
admin
2017-03-07
53
问题
Time sampling means that researchers choose various time intervals for their observation. Intervals may be selected systematically or【T1】______. Suppose we want to observe students’ classroom behaviour. Then in systematic time sampling, our observations might be made during five 20- minute periods,【T2】______. The first observation period could begin at 9 am, the second at 10 am and so forth. However, in random sampling, these five 20-minute periods may be distributed randomly over the course of the day. That is to say, intervals between observation periods could 【T3】______—some longer others shorter. One point I’d like to make is systematic and random time sampling are【T4】______. They are often combined in studies. For example, while observation intervals are scheduled systematically, observations within an interval are made 【T5】______. That means the researcher might decide to observe only during 【T6】______that are randomly distributed within each 20-minute period.
【T6】
选项
答案
15-second intervals
解析
转载请注明原文地址:https://kaotiyun.com/show/s1zK777K
0
专业英语八级
相关试题推荐
Cross-culturalLivingInadaptingtoanewculture,expecttogothroughthreedistinctstages.Iwillgiveyousomeideas
Shortsharptermsmakebigpointsclear.Butpeopleoftenprefertosoftentheirspeechwitheuphemism:amixtureofabstraction
Thereisamarkeddifferencebetweentheeducationwhicheveryonegetsfromlivingwithothersandthedeliberateeducatingof
Animationmeansmakingthingswhicharelifelesscomeliveandmove.Sinceearliesttimes,peoplehavealwaysbeen【M1】______fa
AccordingtotheLegalEveningNews,China’sCriminalLawislikelytoincludeanewchargeof"drivingamotorvehicleinadan
WilliamWordsworth,aromanticpoet,advocatedallofthefollowingEXCEPT______
Heavytrafficonmainexpresswayshasignitedcomplainsaboutthegovernment’stoll-freehighwaypolicyduringthelegalholiday
都市寸土千金,地价炒得越来越高。今后将更高。拥有一个小小花园的希望,对寻常之辈不啻是一种奢望,一种梦想。我想,其实谁都有一个小小花园,这便是我们的内心世界。人的智力需要开发,人的内心世界也是需要开发的。人和动物的区别,除了众所周知的诸多方面,恐怕
A、Potatoes.B、Eggyolk.C、Cereals.D、Tea.B本题考查重要细节。根据句(9)可知,鸡蛋、蛋黄和大豆都能创造通道帮助大脑吸收营养和排除毒素,所以说它们很重要,每天都需要吃,因此[B]为答案。
Humanityusesalittlelessthanhalfthewateravailableworldwide.Yetoccurrencesofshortagesanddroughtsarecausing
随机试题
门静脉高压的三大表现为脾大、_______、腹水。
下列属激光相机成像胶片的是
阿司匹林的抗血小板作用机制为
根据《中华人民共和国环境保护法》,产生环境污染和其他公害的单位,必须把环境保护工作纳入计划,建立()。
避难场地要根据不同的功能合理布置,作为应急的临时避难场地,在火灾、地震和其他突发性灾害发生时具有十分重要的防灾作用,面积按疏散人口配置,人均面积()以上,服务半径在500m左右为宜。
采用下列何种策略时,股价上升买入股票,股价下降卖出股票?()
由于全球金融危机,电脑制造行业进行了行业内的分析,统计数据表明,该行业内市场占有率前五名的企业为A、B、C、D、E,市场占有率分别为29%、25%、21%、15%和10%。其中E公司为了制订自身的发展战略,采用著名的五力模型对行业的竞争结构进行了分析,其分
下列属于心理社会治疗模式中间接治疗技巧的运用对象的是()。
中国与西域文明经过陆上丝绸之路进行交流碰撞。下列诗句中,与中国一西域文明交流无关的是:()
1/2ln2
最新回复
(
0
)