Refer to the following table showing the probability distribution of payoffs from an activity to answer the question below: 
What is the variance of the distribution?
Definitions:
Transfer RNA
An adaptor molecule in protein synthesis that carries a specific amino acid to the ribosome, where its anticodon pairs with the corresponding codon on mRNA.
Ribosomal RNA
A type of RNA which, along with proteins, forms the structure of ribosomes and plays a role in the translation of mRNA into proteins.
DNA Molecule
The carrier of genetic information in living organisms and viruses, composed of two long strands forming a double helix.
mRNA Molecule
A molecule of RNA that encodes a chemical blueprint for a protein product.
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