garciaM6602 garciaM6602
  • 08-03-2022
  • Mathematics
contestada

The average amount of ozone in several cities across Pennsylvania was correlated with the average number of asthma cases in those cities. What type of study is this

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seanes7129
seanes7129 seanes7129
  • 08-03-2022

Answer:

Ecological study

Step-by-step explanation:

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