The most frequent design is option d.) 2 2 4 3 when a researcher planned an experiment in which four independent variables were altered.
In an experiment, the researcher modifies one factor (the independent factor) to ascertain its impact on a different factor (the dependent variable).One independent variable (IV) is changed by the researcher to produce a set of two or more treatment conditions. (2) Measuring. In order to generate a set of scores for each treatment condition, a group of participants' second dependent variable (DV) is measured.
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The answer is true bc everyone must kick the ball
Medical Definition of Vaccination. Vaccination: Injection of a killed microbe in order to stimulate the immune system against the microbe, thereby preventing disease. ... To immunize against viral diseases, the virus used in the vaccine has been weakened or killed.