Sales versus capital expenditure

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Description

Sales versus capital expenditure over 48 months

Format

A data frame with 48 observations (ordered by month) on the following 3 variables.

capital

a numeric vector

pindex

a numeric vector

sales

a numeric vector

References

Peter R. Nelson, Marie Coffin and Karen A. F. Copeland (2003), Introductory Statistics for Engineering Experimentation, Elsevier. (Appendix A)

Examples

1

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