A.An error that occurs when a sample of less than 30 elements is drawn
B.An error that occurs during collection,recording,and tabulation of data
C.The difference between the value of a sample statistic and the value of the corresponding population parameter
[单选题]If nis large and the population standard deviation is unknown, the standard
[单选题]The standard error of the sampling distribution of the sample mean for a sa
[名词解释] cluster sampling
[名词解释] 便利取样(convenience sampling)
[单选题]is defined as the buying and selling of products and services over the Internet. It had included the handling of purchase(67)and funds transfers over computer networks from its inception.A.ElectronicmailB.SearchengineC.MultimediaD.Electroniccommerce
[名词解释] 分层抽样(stratified sampling)
[名词解释] 系统抽样(systematic sampling)
[单选题]G.ratitude is defined as the art of showing for _________every kindness,great and small.A.affectionB.appreciationC.motivationD.opposition
[单选题] Information systems design is defined as those tasks that focus on the specification of a detailed computer-based solution. Typically, there are four systems design tasks for in-house development.1) The first task is to specify (71) , which defines
[单选题]A user interface can be defined as the combination of hardware and software that helps people and computers (72) with each other.(72) A.intercourseB.intercommunionC.communicateD.intercommunicate