Sentence examples for estimates were difficult from inspiring English sources

A report released this week by the General Accounting Office, an investigative branch of Congress, said such estimates were difficult to confirm.

Investment returns in Venezuela seemed to be lower in 2011 than in 2008, but the estimates were difficult to make due to high inflation and large fluctuations in exchange rate, so not much can be concluded from the three-year trends provided here.

Though damage estimates were difficult to accurately obtain, four Arkansas counties reported combined losses of $925,000, and two deaths were reported.

Three relatives felt the lifetime risk estimates were difficult to understand and two relatives felt the presentation was biased toward getting the genomic testing; all other relatives indicated they liked the presentation and did not find the information too difficult to understand.

Because some Muslims are new immigrants and others are recent converts, reliable estimates are difficult.

Because they are solitary and hard to spot, population estimates are difficult, though the foundation believes there are fewer than 30,000 in the country.

Franklin Thomas, chairman of the Sept. 11 Fund, said that although estimates are difficult, his instinct told him that no more than 25percentt of the fund's remaining $251.4 million would be paid out as cash grants to individual families and victims.

Several art experts and dealers said that a major Deas work would easily go for millions of dollars at auction — though estimates are difficult because it has happened so rarely.

While those estimates are difficult to verify, the nation's economy since April has added an average of only about 40,000 jobs a month, raising concerns about a double-dip recession.

The validation of fire emission estimates is difficult, since the emissions from fire to fire are highly variable, and direct flux measurements from fires are extremely difficult.

However, methodologies for the estimation of tree root biomass are varied and their effectiveness in terms of the precision of biomass and carbon estimates is difficult to evaluate.