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Korolek [52]
3 years ago
7

Which of the following is a reason why a researcher may design an experiment with more than two levels of an independent variabl

e? A design with only two levels of an independent variable cannot provide much information about the exact form of the relationship between the independent and dependent variables. When there are only two levels of an independent variable, the relationship between the independent and dependent variables cannot be described with a straight line. An experiment with only two levels of one independent variable always tends to show that there is a positive relationship between the independent and dependent variables. An experimental design with only two levels of the independent variable can only detect curvilinear relationships between the independent and dependent variables.
Social Studies
1 answer:
sukhopar [10]3 years ago
5 0

Answer:

A design with only two levels of an independent variable cannot provide much information about the exact form of the relationship between the independent and dependent variables.

Explanation:

Researchers use multiple levels of an independent variable to produce every possible combination, which is then used as a condition in the experiment. It is important not to confuse having multiple independent variables with having more than two levels of independent variable. For example, if we want to study the impact of income level of parents on the expenditure of student, we know that the independent variable here is the income level, however, we could proxy it into low income level, medium income level, and high income level. The three levels of the independent variable could be individually correlated and regressed against the dependent variable, which is the student expenditure.

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Lincoln’s View of Reconstruction
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Congress refused to recognize Lincoln's plan and countered with the Wade-Davis Bill, a much harsher approach, which the president vetoed with a “pocket veto.” (Note: A pocket veto occurs when a bill is sent to the president, who does not sign it, but Congress adjourns within the 10-day period allowed for the president to return the bill.) Lincoln did not back off from his intention to treat the South generously. In his famous Second Inaugural Address, which is inscribed on the wall of the Lincoln Memorial in Washington, he closed with the words:
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Following Lee’s surrender at Appomattox, President Lincoln again outlined a generous plan for reconstruction. Sadly, the President did not live to see his ideas realized. On April 14, 1865, Lincoln went to Ford’s theater to attend to play with his wife. John Wilkes Booth, a Virginia actor enraged by the South’s defeat, made his way to the presidential box and shot the president in the head. Lincoln was carried across the street and placed in a bedroom, where he died the next morning. Lincoln’s assassination dealt a fatal blow to hopes for a more lenient reconstruction effort than what actually occurred. His death also had a chilling effect on potential sympathy for the South. Regarding Lincoln Winston Churchill wrote:
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Explanation:

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I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

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