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.
Answer:
The cell membrane is semipermeable because it prevents harmful toxins from entering and damaging the cell. At the same time, the cell membrane allows nutrients and other helpful substances through. In this way, the cell membrane is like a security guard of the cell.
Explanation:
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the answer to this is
C.
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The importance of ''thinking before acting'' is most consistent with the viewpoint of Bandura behaviorist
