Consider the following array: 
What value will the following expression yield for total?
Definitions:
Dependent Variable
In an experimental setting, the variable being tested and measured, which is expected to change as a result of modifications to the independent variable.
Independent Variables
Variables in an experiment that are manipulated to determine if they cause a change in the dependent variable.
Observations
The individual entities or datapoints collected for research or analysis purposes, providing the basis for statistical conclusions.
Degrees Of Freedom
The number of independent values or quantities which can be assigned to a statistical distribution or to a system, without violating any constraints.
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