The phrase "analyzed a sample of" is correct and usable in written English.
You can use it when discussing scientific research, experiments, or studies where a specific sample is examined for analysis.
Example: "In the laboratory, we analyzed a sample of soil to determine its nutrient content."
Alternatives: "examined a specimen of" or "studied a portion of".
The researchers analyzed a sample of roughly 200 commenters -- annalyzing publicly available information on their profiles to determine their social networks.
To check the absolute wavelength calibration of the Chandra gratings we also analyzed a sample of Chandra/HETG spectra of non-accreting stars.
We analyzed a sample of high-end jury verdicts in California that were subjected to the state's dollars 250,000 cap on noneconomic damages.
To better understand this phenomenon, we analyzed a sample of 113 strong performers who were finalists for C-suite roles but got turned down in the final decision round.
When we analyzed a sample of performance evaluations of men and women across three high-tech companies and a professional services firm, we found that women consistently received less feedback tied to business outcomes.
In the first of these studies, we analyzed a sample of seven robots to identify the influence of key technologies, such as the navigation system, on technical performance.
Within hours of the attack, researchers at Symantec, a Silicon Valley security company, began analyzing a sample of the virus.
We analyze a sample of large privately and publicly held businesses that filed Chapter 11 bankruptcy petitions during 2001.
Analyzing a sample of 3,990 senior executives drawn from 15 sectors, including government, we find significant industry variation.
Sergey and colleagues used a novel tool to analyze a sample of nearly one million Ethereum smart contracts, flagging around 34,000 as vulnerable including the one that led to the Parity mishap.
The diagnosis of meningitis is made by analyzing a sample of cerebrospinal fluid withdrawn by needle from the spinal canal (i.e., by lumbar puncture).
