The following table shows part of the probability distribution for the number of boats sold daily at Boats Unlimited. It is known that the average number of boats sold daily is 1.57. 
Compute the variance and the standard deviation for this probability distribution.
Definitions:
Table Datasheet
A view or representation of data in rows and columns format, similar to a spreadsheet, often used in database applications to display and manage records.
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Software or functionality within a software application used to create structured presentations of data drawn from a database or other data source.
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Table Datasheet View
Table Datasheet View is a way to display data from a table in a spreadsheet-like format, allowing for data entry and manipulation in databases like Microsoft Access.
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