Can someone explain What is “Experimental Unit”, “Replicate”, “Total sample size” , “treatment size” in Bio-statistics? with a practical biological example.
I see some places, they use "n=..." for replications. According to what I've been taught this is totally wrong.
Does sample size equal to replicate? Then how and why should?
Article A technique for optimizing sample size (replication)
As I've seen in different papers, I'll try to summarize what I've observed in root length measuring test; n.b. each seen has control and treatment
Seen 1: in one plate /box plant grow (Control vs Treatment) and each genotype has 20 seedlings and they report n = 20 seedlings. e.g. like in Picture 1
Seen 2: in one plate /box plant grow (Control vs Treatment) and each genotype has 20 seedlings and they report n = 20 seedlings, 5 independent experiments. e.g. like in Picture 1
Seen 3: in one plate /box plant grow (Control vs Treatment) and each genotype has 20 seedlings and they report n = 3. e.g. like in Picture 2