St@tmaster > Data sets > ST113 Data file
Last modified: Apr 22, 2003
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Rancidness of steaks.

Key words:   Split-plot

Description

In order to investigate the effect of two different types of feed (1 and 2) and 6 different storage conditions on the rancidness of steaks from cattle given the feeds, 4 cows were randomized on the two types of feed so that 2 cows were given each type. After slaughtering 6 steaks from each animal were used in a storage experiment. Two types of packaging (A and B) were used along with 3 storage periods (2, 5, and 8 weeks). After the storage period the rancidness of each steak was determined by an LTBA-measurement. The data, which are part of a larger experiment, are given in the following table:


A B
Animal Feed 2 5 8 2 5 8
1 1 2.0 2.3 2.3 0.6 2.1 2.1
2 2 0.8 1.7 1.4 0.4 0.8 1.2
3 1 1.2 2.1 2.7 0.9 1.5 1.9
4 2 0.4 0.9 1.3 0.1 1.1 0.9


Number of observations: 24


Variable                Description
animal Cow identification, numbered 1-4
feed Values 1,2
pack Values A,B
storage Values 2, 5, 8 weeks
LTBA rancidness measurement

Source

The Royal Veterinary and Agricultural University, Denmark.

Analysis

Split-plot with 3-way ANOVA treatment structure.


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