back-of-the-envelope

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back-of-the-envelope

adj
informal (of a plan, calculation, etc) composed or performed quickly and without detailed analysis or research
[C20: from the notion of something being hastily written on the back of an envelope in the absence of other writing materials ]
References in periodicals archive ?
So [dynamicist Eric] Mamajek, unsure of what the star's effect on the Oort Cloud might be, did a quick back-of-the-envelope calculation.
A quick back-of-the-envelope calculation, overlaying estimates of provincial GDP shares with the latest GDP numbers, helps shed some light on this (provincial income shares are estimated by Dr Hafiz Pasha in a brilliant paper 'Growth of the Provincial Economies - Institute for Policy Reforms').
According to a back-of-the-envelope calculation by an expert, the valuation is at about $20 million (Rs 133 crore).
A back-of-the-envelope calculation shows the fee would raise about 5 billion euros a year in Germany alone.
Sender and Milo, of the Weizmann Institute, and Fuchs, now at the Hospital for Sick Children, traced the figure to a single back-of-the-envelope calculation in a 1972 paper.
The Republican called the Moody's report "an oversimplified, back-of-the-envelope calculation based on unfounded assumptions.
Back-of-the-envelope calculation shows the returns from the APY work out to be seven to eight per cent.
A rough back-of-the-envelope calculation suggests that average annual wages are about $35,000 per year.
A back-of-the-envelope calculation shows that a 10 percent relative increase in the SUD treatment rate at an average cost of $1.
After doing a full cost analysis on taking out a personal loan instead of just a back-of-the-envelope calculation, you may find your holiday or home improvement costs a lot more than you originally thought.
Scanlon's back-of-the-envelope calculation suggests the lakes could have persisted or hundreds or even a few thousand years.
Consider this back-of-the-envelope calculation of the Oregon program's cost to taxpayers.