The Following Data Were Generated from a Randomised Blocked Experiment

question 3

Essay

The following data were generated from a randomised blocked experiment. Conduct a Friedman test at the 5% significance level to determine if at least two population locations differ. $$\begin{array} { | c | c | c | c | c | c | c | } \hline &&& { \text { Treatment } } \\\hline \text { Block } & \text { A } & \text { Rank } & \text { B } & \text { C } & \text { Rank } & \text { D } \\\hline 1 & 70 & & 80 & 50 & & 65 \\\hline 2 & 50 & & 87 & 52 & & 81 \\\hline 3 & 69 & & 97 & 75 & & 83 \\\hline 4 & 65 & & 72 & 62 & & 73 \\\hline 5 & 58 & & 87 & 52 & & 62 \\\hline\end{array}$$

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Definitions:

Neuron-produced Chemicals

Chemicals, such as neurotransmitters, that are produced by neurons to transmit signals across the synapse to another neuron.

All-or-none Response

A principle that states a neuron fires with the same potency each time, although frequency can vary; it either fires or doesn't.

Electrical Charge

A fundamental property of matter that is responsible for electrical phenomena, existing in a positive or negative form.

Threshold

The level of intensity that must be exceeded for a certain reaction, phenomenon, result, or condition to occur or be manifested.