Be wary of including items in a composite measure that are not related to one another empirically. b. you should probably drop any item that is not related to several other items in your composite measure. c. if items are unrelated it is unlikely that they measure the same variable. d. you must check the bivariate correlations between all items that you plan to include in your composite measure. e. face validity does not need to be considered.

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Employees at a library check out books to patrons. books have an isbn and a name. the library sometimes has multiple copies of the same book. books have one or more authors. a patron is an individual who has an active (non-expired) library card. for each library card, we store the person's first and last names and their address. for each employee, we store their employee id, current salary, first and last name and their address. we also store the employee id of their current manager. each time we check out a book to a patron we need to store the date of the transaction, the employee who checked out the book to the patron, and the library card of the patron. some employees have library cards. if an employee patron turns in a book late, the fine that they pay is a percentage of their salary. some employees are authors who have library cards—they are allowed to check out as many books as they like.

According s. m.a. r.t guidline goal should be