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Statistics Symbols and Notations
Array – collection of data organized in table or rectangular form. They are identified by capital bold letters, X, Y, Z, A….
Given an array X, is the element of X at the ith position. Consider the array below.
ix
Fill in the table
Define as gross sales for month i, and define as operating cost for month i
ix
iy
The Sigma Notation
Fill in the table
Properties of Summation
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