Explanation:
Social Darwinists believe in “survival of the fittest”—the idea that certain people become powerful in society because they are innately better. Social Darwinism has been used to justify imperialism, racism, eugenics and social inequality at various times over the past century and a half.
Answer:
If we do a poor job at the sampling stage of the research process, the integrity of the ... the directors of these programs returned the completed questionnaire. ... researchers were not asking whether a sample represented the population; they ... Before a sample can be chosen randomly, it is necessary to have a complete list Explanation:
Answer:
Fixed ratio
Explanation:
The Fixed ratio schedule is used in ope-rant conditioning. Ope-rant conditioning is work on the relationship of response and stimulus due to that the behavior of a subject has been changed.
As the name indicated the reinforcement is being given after a fixed ratio for example after every ten times the reinforcement is provided to the rat in the box. So the rat can learn the behavior.
In this type of reinforcement, the schedule will remain constant. If the reinforcement is not provided after a fifth, tenth or any fixed number then it won't be a fixed ratio.
The research error described above is an example of selection bias.
Selection bias takes place when, from a population of interest, a group of individuals is selected in order to construct a sample but without a proper randomization. The result is a sample which is not representative of the underlying population.
According to the example, the target population of the research comprises all students but the sample only includes boys. Hence, selection has not been random because it followed a gender criteria, and the results obtained using it cannot be applicable to the whole population because they are affected by a selection bias.
Answer:
The amount of antifreeze you need in order to winterize your RV varies depending on the size of the vehicle, and the length of the water lines. Usually, two-three gallons of propylene glycol antifreeze is enough. However, if you’re not planning on bypassing this for your water heater, you will need at least six extra gallons of antifreeze.
Explanation:
