Choose the best answer for each situation.A scientist with the EPA examining water for contamination writes down that there was an iridescent sheen on the surface of the water. What type of data did the scientist record?

The scientist described the water’s appearance as having an “iridescent sheen.” This is an observation in words, not a numerical measurement, so it is qualitative data. Quantitative data would include a number, such as the measured concentration of a contaminant.

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