The growing demand for ivory is greatly affecting Africa's elephants. People who are in the ivory selling/trading business go through great lengths to try and get ivory. Africa has tried many efforts to try and protect the elephants from poachers.(people illegally hunting for their ivory tusks) Some efforts go un-noticed. People have set up sanctuaries to help protect the elephants. when poachers get ivory from an elephant, they usually kill the elephant in the process.(It's usually easier.) Certain types of elephants are now endangered because of the amount of poachers killing them.
Answer:
sample selection error
Explanation:
According to my research on different types of sample methods, I can say that based on the information provided within the question this is an example that the sample contains a sample selection error. This refers to an error occurred when the sample deviates from the true characteristics, attributes and behavior of the total population. Since there are many unlisted numbers and people listed who do not have landlines the sample is flawed.
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