Answer:
The reason is Charlie chooses the sample which does not requires hard work to extract useful data and other factors were not considered like babies are always part of household size.
Explanation:
The approach was to just completing the task not completing the task with the level of research which it requires. The sample chosen was very small and was not representative of the population. The reason is that the students in the stats class might be from same housing society where millionaires reside. So the sample is inappropriate here because the way a rich people spend his life is different from the labors, etc. So the household matters on the financial status of person, culture, etc. The sample chosen a very small share which was not a random selection.
Secondly, Charlie must consider the age of person that the person is financially responsible to take care of. Because babies are always in the household size and that this information was also not considered necessary by Charlie to extract.
Answer:
Explanation:
Canada is the largest foreign supplier of crude oil (25% of oil imports) and natural gas to the United States. In short, this energy relationship has enhanced U.S. energy security and provided Canada with a steady demand for its energy exports.
please mark brainlest
The threat to validity that is likely to occur in the scenario above is Selection Bias.
<h3>What is Selection Bias?</h3>
This occurs when a researcher has control and intentionally chooses those who are going to be researched, observed, or studied. To eliminate this bias, the scientist must ensure that the sample population is selected very randomly.
Other threats to validity are:
- History
- Maturation
- Attrition
- Social Interaction
- Instrumentation
- Testing
- Regression to the mean, etc.
Please see the link below for more about Threat to Validity:
brainly.com/question/4168290
