potato {pbANOVA}

potato data

Description

This dataset potato is from an experiment on how plants adapt to cold climates. The investigators decided to study this problem after observing that plants that have been conditioned to cold previously appear to suffer less damage from the cold. Two species of potato were studied (species 1 and 2). Each plant was exposed to one of two acclimatization regimes (1= plant was kept in cold room; 0= plant was kept at room temperature) for several days. Later, plants were subjected to one of two cold temperatures (-4 degrees C is coded as 1; -8 degrees C is coded as 2). Two responses were measured: damage score for photosynthesis (photo), and damage score for ion leakage (leak).

Usage

data(potato)

Format

This data frame contains the following columns:

variety:

Two species of potato were studied (species 1 and 2)

regime:

Each plant was exposed to one of two acclimatization regimes (1= plant was kept in cold room; 0= plant was kept at room temperature) for several days.

temp:

plants were subjected to one of two cold temperatures (-4 degrees C is coded as 1; -8 degrees C is coded as 2)

photo:

damage score for photosynthesis

leak:

damage score for ion leakage

Details

Use ion leakage to be the response variable. Some of the 80 plants originally assigned to the treatment combinations were lost during the experiment. Analyze the data from the plants that made it through, and assess the effects of the three experimental factors species, regime, and temperature on the response leakage.

References

Alver and Zhang (2022), Parametric Bootstrap Procedures for Three-Factor ANOVA and Multiple Comparison Procedures with Unequal Group Variances

Alver and Zhang (2022), Multiple Comparisons of Treatment vs Control Under Unequal Variances Using Parametric Bootstrap