The phrase "a relatively common practice" is correct and usable in written English.
It can be used to describe an action or behavior that is frequently observed or accepted in a particular context or field.
Example: "In many workplaces, taking short breaks throughout the day is a relatively common practice to enhance productivity."
Alternatives: "a fairly typical practice" or "a somewhat usual practice".
Ever since trailers began debuting online, this has been a relatively common practice.
Many, including Fawcett's wife, Nina, believed that Indians had taken the party hostage — a relatively common practice.
Many wealthy Pakistanis employ children as servants, often to help with their own youngsters, a relatively common practice that Pakistani law does not prohibit.
Another clause -- that a candidate should never have availed himself of another nationality -- also seemed aimed at Mr. Ouattara, who represented Burkina Faso for a West African financial institution earlier in his career, a relatively common practice at the time.
In the three weeks that followed, E! repeated Part 1 16 times and Part 2 22 times, a relatively common practice by cable channels when they have a hit show.
It was 1996, and I had just turned 35 when my doctor sent me for an initial screening — a relatively common practice at the time — that would serve as a base line when I began annual mammograms at 40.
Yet copy-checking is, to judge from a recent blogpost by pharmacologist David Kroll and a discussion on the mailing list of the Association of British Science Writers, relatively common practice.
Others defended the relatively common practice of providing funding for surgical transition procedures under military or national health cover.
Although practices differ between countries, allowing parents in the operation room during anesthesia induction is relatively common practice [ 23].
An important implication of this is that the relatively common practice in phylogenetics of removing sites that contain gaps before tree inference may cause a systematic bias.
Considering the relatively common practice of users manually combining tobacco and marijuana (e.g., blunts) [ 20], future research should consider developing a better understanding of the link between RYO tobacco use and marijuana use among youth.
