Collecting Your Data Definitions Categorical Variable: the variable whose values can be put into categories (groups). Cluster Sampling: a researcher divides the population into clusters. Then, a ...

The University of Cincinnati College of Medicine is collecting samples from COVID-19 patients to learn more about possible treatments and prevention.

Missions that return asteroid samples bring home more than just very expensive dust. These samples can provide valuable insights for scientists and commercial interests.

Information collected from a soil test can be no better than the sample. Therefore, proper collection of the soil sample is extremely important. Representative samples are as important to get good ...

The commissioner Trump fired over “rigged” jobs report most likely didn’t have a hand in assembling the report, former BLS ...

How do you collect a fresh, uncontaminated lava sample hot from the volcano, then get it to the lab without it growing pesky crystals? Check out how ...

Perseverance drilled its first sample-collecting hole on Friday (Aug. 6), but data beamed back to Earth by the rover indicate that no Mars rock or dirt made it into the sampling tube.

Soil Analysis for Farming: How to Collect a Soil Sample and Interpret Results Which soil sampling methods should you choose, and what benefits does each method have? Learn more about soil testing ...

Samantha R. Lattof ¹, Collecting data from migrants in Ghana, Demographic Research, Vol. 38 (JANUARY - JUNE 2018), pp. 1017-1058 ...