TABLE 18-8 Recently,a University Switched to a New Type of Computer-Based Registration.The

question 113

Short Answer

TABLE 18-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
-Referring to Table 18-8,an R chart is to be constructed for the time required to register.One way to create the lower control limit involves multiplying the mean of the sample ranges by D₃.For this data set,the value of D₃ is ________.

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Definitions:

Population Location

Refers to the geographical distribution of members of a population across different areas.

Response Times

The duration between the initiation of a query, command, or stimulus and the system's or person's reaction or reply.

Nonparametric Procedure

A nonparametric procedure refers to a type of statistical analysis that does not rely on data belonging to any particular distribution, suitable for ordinal data or when the data's distribution is unknown.

Kruskal-Wallis Test

An analytical method not predicated on parameters for assessing statistically significant disparities among two or more groups related to an independent variable in relation to a dependent variable that is either continuous or ordinal.