coin (version 1.1-0)

vision: Unaided Distance Vision

Description

Assessment of unaided distance vision of women in Britain.

Usage

vision

source

Stuart, A. (1953). The estimation and comparison of strengths of association in contingency tables. Biometrika 40(1/2), 105--110.

Details

Paired ordered categorical data from case-records of eye-testing of 7477 women aged 30--39 years employed by Royal Ordnance Factories in Britain during 1943--46, as given by Stuart (1953). Stuart (1955) used this data set to illustrate a test of marginal homogeneity.

References

Stuart, A. (1955). A test for homogeneity of the marginal distribution in a two-way classification. Biometrika 42(3/4), 412--416.

Examples

## Asymptotic Stuart(-Maxwell) test (Q = 11.96)
diag(vision) <- 0 # speed-up
mh_test(vision)