Answer:
Missing data or correlation and causality
Step-by-step explanation:
The results of a hypothesis should always be very accurate and display the research data that allowed us to reach the presented result. The lack of data, correlation and causality do not give the search result credibility because it does not show the factors and variables that show that the result is correct. This is the problem of the result stated in the question. The result is that lighter aircraft can travel faster, but it does not say the data, nor the variables and situations that led to this conclusion.
