Answer: Statistical Regression
Explanation:
Internal Validity is a degree of how well a research is carried out. Threats to this include History, Maturation, Testing, Instrumentation and Statistical regression threats.
Statistical regression, or regression to the mean threatens internal validity by choosing the participants who score the highest or lowest in a group of people to take part in an experiment. An example is choosing the worst scoring or the worst behaving students and testing to see if there are improvements after a period of time.
When a second test is carried out, it biases the research by moving them towards the mean of their original larger group.
Answer:e) No. Visual aids should be displayed only while they are being discussed.
Explanation: visual aids should be displayed when it is time to discuss about them otherwise they may tend to be distructive to the audience who may lose focus on your speech and start focusing on the visual aid. They may even try to analyse it in their mind which means you have completely lost their focus on your speech cause now they are trying to figure out this visual aid.
Answer:
Kentucky was the 15th U.S. state, admitted to the Union on June 1, 1792, after the American Revolutionary War. Kentucky was initially neutral in the American Civil War, but joined the Union side after a Confederate invasion in 1861. The state remained under Union control for most of the war.
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Sincerely; Victoria<3
Answer:
Above 18
Explanation:
At the beginning it was above 21 but many countries reduced it to 18 and above 18
