This 'book has been prepared to bring together, in a form acces Sible for class use, scattered articles and selections upon the sub ject of business statistics. It is designed primarily for purposes of instruction in the course in Business Statistics in the Harvard Graduate School of Business Administration. The subject is one to which scientific attention has only recently been directed; consequently there is a dearth of published material which is strictly scientific. For this reason some selections have been in cluded which are not fully satisfactory but which suggestively furnish a basis for class discussion. The inclusion of any selec tion does not imply that the methods used or the conclusions reached meet with the editor's full approval.
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