As a business analyst, you often track monthly performance metrics by listing them as a sequence. If your manager asks for the total output over the first quarter, you calculate a partial sum (for example, evaluating ${}3 + 5 + 8$ for the first three months' data). Based on mathematical principles, which of the following is the correct definition of a 'partial sum'?

An investment analyst tracks the annual dividends of a stock as a data sequence, such as ${}100, 110, 120, \dots$. When the analyst calculates the total dividend income for only the first five years of the investment, this resulting sum is mathematically referred to as a(n) ________.

A production manager at a manufacturing plant tracks the number of units completed each hour as a sequence of data. If the manager calculates the total production for only the first 8 hours of a shift, this resulting total is mathematically defined as a partial sum.

A business analyst is reviewing monthly performance metrics to prepare a quarterly report. Match the following mathematical terms to their descriptions as they apply to the process of calculating these metrics.

Defining Totals in Project Management