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
2019-03-26
21
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.
【T5】
选项
答案
at random times
解析
转载请注明原文地址:https://kaotiyun.com/show/05EK777K
0
专业英语八级
相关试题推荐
IsEnglishAppropriateforaGlobalLanguage?SeveralintrinsicfeaturesofEnglishlanguagehavemadeitanappropriatechoice
HowtoChooseaCollege?I.Student-facultyratio—Thelowertheratios,themore【T1】_____youwillget【T1】______—Healthyrat
HowtoChooseaCollege?I.Student-facultyratio—Thelowertheratios,themore【T1】_____youwillget【T1】______—Healthyrat
ThisseemstheEnglishmayhavebeenunfairinassociatingbird’sbrainwithstupidity.
ThefirstmentionofslaveryinthestatutesoftheEnglishcoloniesofNorthAmericadoesnotoccuruntilafter1660—somefor
TherearedifferenttheoriesofLanguageDevelopment.Thelearningperspectivearguesthatchildrenimitatewhattheyseeandh
TherearedifferenttheoriesofLanguageDevelopment.Thelearningperspectivearguesthatchildrenimitatewhattheyseeandh
BillGatesmaybeoneofthesmartestguysinthecountry,butevenhe’sannoyedathavingtorememberasortofpersonalpass
Educationgivesustheknowledgeoftheworldaroundus.Itdevelopswithusaperspectiveoflookingatlife.Ithelpsusbuild
Educationgivesustheknowledgeoftheworldaroundus.Itdevelopswithusaperspectiveoflookingatlife.Ithelpsusbuild
随机试题
下列各句中没有使用对比修辞手法的一句是()。
(2021年泰安)《国家中长期教育改革和发展规划纲要(2010—2020年)》明确规定:将“坚持德育为先”作为未来我国教育发展的战略主题之一,强调“(),把社会主义核心价值体系融入国民教育全过程”。
注水井管理中的“三个及时”是指在注水井管理上,要做到及时取全取准资料、及时()、及时调整。
肝脏结构和功能的基本单位是()
若在对数期50min时测得大肠杆菌数为1.0×104cfu/mL,培养450min时大肠杆菌数为1.0×1011cfu/mL,则该菌的细胞生长繁殖速率为()。
“开始”菜单的选项中如果右边有黑色三角形表示该项有下级菜单。()
收回货款1500元存入银行,记账凭证中误将金额填为15000元,并已入账。错账的更正方法是()。
根据个人所得税的相关规定,下列表述正确的是()。
E*ComEasyCommunicationsCompany
A、Sheisgoingtosharearoomwithanotherstudent.B、Shewillhaveherownroombutsharethebathroom.C、Shechoosestohave
最新回复
(
0
)