=+For example, the article “Time Lapse Cinematographic Analysis of Beryllium–Lung Ibroblast Interactions”

(Envir. Research, 1983: 34–43) reported the results of experiments designed to study the behavior of certain individual cells that had been exposed to beryllium.

An important characteristic of such an individual cell is its interdivision time (IDT). IDTs were determined for a number of cells both in exposed (treatment) and in unexposed (control) conditions. The authors of the article used a logarithmic transformation. Consider the following representative IDT data:

28.1 31.2 13.7 46.0 25.8 16.8 34.8 62.3 28.0 17.9 19.5 21.1 31.9 28.9 60.1 23.7 18.6 21.4 26.6 26.2 32.0 43.5 17.4 38.8 30.6 55.6 25.5 52.1 21.0 22.3 15.5 36.3