Story Name: Age and height
Datafile Name: ageandheight.xlst

Abstract: The height of a child is not stable but increases over time. Since the pattern of growth varies from child to child, one way to understand the general growth pattern is by using the average of several children's heights, as presented in this data set. The scatterplot of height versus age is almost a straight line, showing a linear growth pattern.

Description: Mean heights of a group of children in Kalama, an Egyptian village that is the site of a study of nutrition in developing countries. The data were obtained by measuring the heights of all 161 children in the village each month over several years.
Number of cases: 12
Variable Names:
1. Age: Age in months
2. Height: Mean height in centimeters for children at this age

The straightforward relationship between height and age provides a simple illustration of linear relationships, correlation, and simple regression.
Image: Scatterplot of height vs. age