Answer:
option C and option E
Step-by-step explanation:
IMO, data gathering is the collection of variable of interest in an established systematic fashion that enables one to answer stated research questions, test hypotheses, and evaluate outcomes.
<em>A.Finding the mean weight of cancer patients in a study</em>
Before finding the mean weight, data has already being gathered. In finding the mean weight, the values of the weight of the different cancer patients was already collected.
<em>B.Graphing the heights of trees</em>
Graphing is the process of plotting graphs with variables. These variables were already gathered.
<em>C.Asking voters whom they will vote for</em>
This activity is an example of data gathering. Variables are collected when the voters answers who they would vote for, in this process, data is gathered.
<em>D.Using the results of a mathematical model to predict the next day's weather</em>
These results to be used to predict the next day's weather was already gathered.
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<em>E.Weighing wildlife</em>
During this process, fresh variables are collected while weighing the wildlife.
