The phrase "a range of questionable" is correct and usable in written English.
It can be used to describe a variety of items, actions, or situations that are deemed to be dubious or not entirely reliable.
Example: "The report presented a range of questionable statistics that raised concerns about its accuracy."
Alternatives: "a variety of dubious" or "a spectrum of unreliable".
The $50 million inquiry covers a range of questionable activities involving Bill and Hillary Clinton that disappeared from public view the moment Monica Lewinsky came along.
His sweep of Wall Street firms has focused on a range of questionable practices involving a lack of disclosure and misleading sales practices.
Qwest engaged in a range of questionable sales agreements and other transactions that later became the subject of federal and state investigations, as well as shareholder lawsuits against the company and its previous senior managers.
Recent studies have shown how intense career pressures encourage life scientists to engage in a range of questionable practices to generate publications – behaviours such as cherry-picking data or analyses that allow clear narratives to be presented, reinventing the aims of a study after it has finished to "predict" unexpected findings, and failing to ensure adequate statistical power.
On August 25, the Education Department, citing a range of questionable business practices by ITT, banned the company from enrolling new students using federal grants and loans.
ITT shut its campuses and declared bankruptcy after the U.S. Department of Education, citing a range of questionable business practices, banned the company from enrolling new students using federal grants and loans.
There isn't a range of morally questionable personalities only a few guilty people suffering through situations they have little power to affect.
He was accused of nepotism and a wide range of questionable business practices in a 469-page independent audit released last month.
Although legitimate in theory, the doctrine had been invoked in an unprecedented manner by the Bush administration to block judicial review of a broad range of questionable practices.
"Arkansas has created a vast shroud of secrecy that has masked a range of improper or at least questionable conduct".
Indeed, because of the absence of any routine tests for pbNK in most hospital laboratories, blood samples taken in fertility clinics in the UK are often sent abroad for a range of expensive 'immune' tests including equally questionable 'Th1/Th2 ratios'.
