The phrase "a more narrow range of" is not correct in standard English; it should be "a narrower range of." You can use it when discussing a specific, limited selection or variety of something, typically in a comparative context.
Example: "The study focused on a narrower range of variables to ensure more accurate results."
Alternatives: "a more limited range of" or "a tighter range of."
"It was time," he said, "to focus on a more narrow range of interest.
Mr. Homann, the German regulatory chief, said he hoped to convince operators to offer a more narrow range of speeds in their broadband advertising.
The "deprivation test" follows the publication of the government's green paper on the future of the BBC which suggested it could focus on a more narrow range of services with a consequent cut in the licence fee.
Indeed, when Amazon first began using tabs at the top of its pages in 1998, the idea quickly became standard fare among retailers -- even those with a more narrow range of product categories.
Culture secretary John Whittingdale questioned whether the BBC should continue to strive to be "all things to all people" or whether it should focus on a more narrow range of services.
When we examine a more narrow range of history, comparing people who sought outpatient treatment for depression, the rate tripled from 7.3 per 1000 to 23.3 in just one decade (1987-1997).
The half-life of serum elimination for PFHS ranged between 100 and 200 days (mean, 141 days) in three male monkeys and between 49 and 140 days (mean, 87 days) in three female monkeys (Noker and Gorman 2003b) compared with a more narrow range for PFOS of 122 146 days (mean, 132 days) and 88 138 days (mean, 110 days) for male and female monkeys, respectively (Noker and Gorman 2003a).
We will provide a more narrow range with a more targeted estimate at a later date.
As researchers have different background knowledge and may receive different, more intense training programs prior to conducting assessments, this may have artificially inflated the results leading to the high and more narrow range of estimates.
When compared with the human versions of these receptors, the researchers found that the cat bitter receptor Tas2r38 was less sensitive to PTC and did not respond to PROP, whereas Tas2r43 was less sensitive to aloin but more sensitive to denatonium, leading the researchers to conclude that cats taste different, and perhaps more narrow, ranges of bitter flavors than humans.
That's a much more narrow range.
