## Eac Bac cumulative Cpi Eac when cost performance is negative and schedule dates must be met Eac Ac [BAC EV cumulative CPI cumulative SPI

In addition to the bottom-up ETC, there are two other formulas for calculating ETC that you should be aware of for the exam. They are discussed next.

When you believe that future cost variances will be similar to the types of variances you've seen to date, you'll use this formula to calculate ETC:

ETC = (BAC - cumulative EV) / cumulative CPI

Assuming your cumulative earned value (cumulative EV) is 725, cumulative CPI value is 1.12, and BAC is 1,000, plug in the numbers:

Therefore, at the measurement date, you need \$245.50 to complete all the remaining work of this work component (or project if you're using project totals), assuming variances in the future will be the same as they have been to date.

When you believe that future cost variances will not be similar to the types of variances you've seen to date, you'll use this formula to calculate ETC:

Now calculate your value:

In this case, you need \$275 to complete all the remaining work of this work component, assuming variances in the future are different than they have been to date.

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