Answer:
Confounding variable
Explanation:
The confounding variable is the variable that is extra in variables. It is not counted by the experimenter in the research experiment. With the help of confounding variables, it can be explained that it is cor-relational but in actual it is not there. This variable introduces the bias ness in the experiment.
confounding variable is the variable that affects the variable hidden on its outcome. But technically if we see confounding is not a true bias. Bias occurs when there is an occurrence of an error in data collection. In confounding variable there is positive bias occur when an association of bias is away from null and negative bias occur when it is associated with null.
The percentage of people who develop alcohol dependence some time in life if they start drinking after 21 is 9%.
<h3>Why is it recommended to only drink after 21?</h3>
Of the people who begin to drink earlier than 21, more than 30% of them will develop alcohol dependence at some point in their lives.
Those who start drinking after 21 however, will have more control which is shown by only 9% of them developing alcohol dependence later in life.
Find out more on alcohol dependence at brainly.com/question/5851849
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Answer:
There are 1,500 volcanoes in the world.
hopes this helps:)
People found life more convenient, as these inventions gave them more opportunities and freedoms.
People became frustrated, as the expense of these inventions put them out of reach of most consumers. People rejected these inventions, preferring to do things as they had been done in the past.
