handwheel: Handwheel

In clayford/dvdata: Data Files for Design and Analysis of Experiments (Dean & Voss)

Description

An experiment for finding the design of a machine tool handwheel that would maximize the accuracy on the part of the operator in the setting of the machine tool handwheel. (Chapter 15, Table 15.48)

Usage

handwheel

Format

A data frame with 64 rows and 9 variables:

BLOCK

block - 4 levels

A

handwheel diameter - 2 levels (5.5 or 10 in)

B

dial diameter - 2 levels (4 or 8 in)

C

thickness of the dial line - 2 levels (0.008 or 0.064 in)

D

friction of the spindle - 2 levels (7.5 or 45 lb.-in)

E

level of operator's elbow relative to height of handwheel - 2 levels (level or above)

F

previous experience of operator - 2 levels (practiced or nonpracticed)

G

knowledge of accuracy of previous setting - 2 levels (feedback or no feedback)

LOGS

response variable: log of sample variance of 25 repeated observations for a particular treatment combination

Source

http://www.wright.edu/~dan.voss/bookdata/data.html

References

Dean, A. and Voss, D. (1999). Design and Analysis of Experiments. New York, Springer.

clayford/dvdata documentation built on May 13, 2019, 7:38 p.m.