
Probability distributions 291
0
0.0005
0.001
0.0015
0.002
0.0025
0.003
0 200 400 600 800 1000 1200 1400 1600
FIGURE 9.22: An array having both expressed and unexpressed genes. The
unexpressed genes are normally distributed with a mean of 400 and a standard
deviation of 150. The expressed genes are normally distributed with a mean
of 1,000 and a standard deviation of 150. Note that there are expressed genes
with values less tha n 700 and unexpressed genes with a value more than 700.
deviation of 150 . Note that there are expr essed genes with values less than
700 and unexpressed genes with a value less than 70 0. This shows that in
most cases, distinguishing ...