Answer:
IQ and head size are positively correlated.
Explanation:
Correlational research: In scientific and psychological research, The term, "correlational research" is determined as one of the different types of "non-experimental research" methods in which an investigation, researcher, or experimenter tend to measure or evaluate two different variables and therefore assess and understands the "statistical relationship" between the given variables in the absence of any influence from the extraneous variable.
Positive correlation: Relationship between two different variables that move in a similar direction.
In the question above, Joshua can conclude IQ and head size are being positively correlated.
The answer is relatedness
I hope that helped
B) General Cornwallis surrendered to General Washington
Researchers often use computers in their experiments to keep from influencing the participants and to keep themselves <u>blind</u> regarding the conditions to which the participants have been assigned.
<h3><u>Why is research blinding crucial?</u></h3>
Blinding is crucial to prevent bias (such as observer bias and demand characteristics) and guarantee the internal validity of a study.
Participants may alter their behavior in ways that affect the outcome that researchers are aiming to measure if they are aware of whether they are in a control or treatment group. If those providing the treatment are aware of the participants' assigned groups, they may treat them differently, which could either directly or indirectly affect the outcome.
Learn more about research blinding with the help of the given link:
brainly.com/question/3453118?referrer=searchResults
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