Calculated from selected discrete values over a specified time period(adjective)
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Use "time-weighted" in a sentence
"It's usually not the lowest time-weighted opportunity-cost option, unless the borrower isn't the one repaying."
"A Morningstar Inc. report shows that for any time period evaluated, whether measured by time-weighted or by investor returns, public plans have consistently outperformed retail mutual funds."
"Since then, the Dow engaged in stomach-churning see-saws, but the time-weighted average has been stuck around 10,000."