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

Quiz

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Answers