IIS (version 1.0)

infant_walking: Infant Walking

Description

This data set contains the ages at which 12 infants were reported to have started walking by their mothers. The infants were randomly split into "exercise" and "no-exercise" groups" as part of the study conducted by Zelazo et al. (1972). This data is displayed in Table 9.8 of Wolfe and Schneider - Intuitive Introductory Statistics.

Usage

infant_walking

Format

A data.frame with 6 rows and 2 columns indicating the age (in months) at which infants first walked for the exercise and no-exercise groups.

Examples

# NOT RUN {
data(infant_walking)
summary(infant_walking)
# }