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A research company uses a device to record the viewing habits of about 10000

A research company uses a device to record the viewing habits of about 10000

Math   Statistics-And-Probability   
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> Is the complete question "A research company uses a device to record the viewing habits of about 7500 ​households, and the data collected today will be used to determine the proportion of households tuned to a particular sports program."

In statistics and econometrics there is a type of data collected by observing many subjects (such as individuals, firms, countries, or regions) at the same point of time, or without regard to differences in time. This is cross sectional data

Our definition of type of data suits this, and therefore the answer is CROSS -SECTIONAL data

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