The phrase "broader sample" is correct and usable in written English.
It can be used when discussing research or data collection methods, and refers to a larger and more diverse group of individuals or objects being studied. Example: In order to obtain more accurate results, the researchers decided to expand their study by including a broader sample of participants from different socioeconomic backgrounds.
A survey was also conducted on 86 farms to obtain yield results in a broader sample.
(Although he gained ground among Ipsos's broader sample of registered voters).
Xiaowei Xu and I are now trying to extend our research to a broader sample of enterprises.
To evaluate efficacy more fully, the pilot would need to include a broader sample of companies and more comprehensive set of signatures, the report said.
Economists, including those at the bureau, regard the payroll survey as a better indicator of employment growth, because of its broader sample size.
She suspects that if and when adult films for women become more widely accepted, and they have a broader sample of consumer feedback, the films may get less explicit.
And while fewer describe themselves as evangelical Christians than a broader sample of American voters, they are just as likely to say religion is extremely or very important to them.
To see if we could find a similar effect in a broader sample, our team turned to the Midlife in the United States study, which has tracked the health and lifestyles of older adults nationwide.
However, these positive effects dissipate when looking at a broader sample of accelerators: many programs do not seem to accelerate startup development, and in some cases may even slow them down.
Using the excess bond premium as a proxy for fluctuations in the supply of capital, I also extend the generalizability of my findings to a broader sample of 84,421 firm-years over the 1972 2011 period.
To gather more information about these critical but usually overlooked contributions to uncertainty, and, simultaneously, to query a broader sample of respondents, a survey method was designed to exploit the possibilities of electronic communication based on the World Wide Web.
