When a hypothesis is proved by observations and proofs it becomes a theory .
When a hypothesis has been supported by observations from numerous experiments it may be referred to as a blank?
When a hypothesis is proved by observations and proofs it becomes a theory .
What is it called when a hypothesis has been supported by observations from numerous experiments?
A scientific theory is an idea supported by research that attempts to explain existing observations or predict new ones.
Can a confounding variable also be considered an extraneous variable?
A confounding variable is a type of extraneous variable that not only affects the dependent variable, but is also related to the independent variable .
Which is the fairest way to take a representative sample from a population?
Which is the fairest way to take a representative sample form a population? ensuring that every subject in the population has an equal chance to be selected.
What does a controlled experiment test?
What is a controlled experiment? This is when a hypothesis is scientifically tested. In a controlled experiment, an independent variable (the cause) is systematically manipulated and the dependent variable (the effect) is measured; any extraneous variables are controlled .
What is the information collected in an experiment called?
The dependent variable is the data we collect during the experiment. This data is collected as a result of changing the independent variable.
What is the hypothesis example?
Here are some examples of hypothesis statements: If garlic repels fleas , then a dog that is given garlic every day will not get fleas. Bacterial growth may be affected by moisture levels in the air. If sugar causes cavities, then people who eat a lot of candy may be more prone to cavities.
Is a hypothesis a prediction?
The only interpretation of the term hypothesis needed in science is that of a causal hypothesis, defined as a proposed explanation (and for typically a puzzling observation). A hypothesis is not a prediction. Rather, a prediction is derived from a hypothesis .
What is a good sentence for hypothesis?
1. She wrote something to summarize her hypothesis. 2. The researcher sets up experiments to test the hypothesis.
What are examples of confounding variables?
For example, the use of placebos, or random assignment to groups. So you really can't say for sure whether lack of exercise leads to weight gain. One confounding variable is how much people eat . It's also possible that men eat more than women; this could also make sex a confounding variable.
What is an example of a moderating variable?
Moderating variables can be qualitative (non-numerical values like race, socioeconomic class or sex) or quantitative (numerical values like weight, reward level or age). For example: ... There may be a relationship between socioeconomic status and how often women perform self-exams on their breasts .
How can you minimize the effects of extraneous variables?
One way to control extraneous variables is with random sampling . Random sampling does not eliminate any extraneous variable, it only ensures it is equal between all groups. If random sampling isn't used, the effect that an extraneous variable can have on the study results become a lot more of a concern.
What is the dependent variable in an experiment?
The dependent variable is the variable that is being measured or tested in an experiment .1 For example, in a study looking at how tutoring impacts test scores, the dependent variable would be the participants' test scores, since that is what is being measured.
Which of the following is an example of convenience sampling?
A convenience sample is a type of non-probability sampling method where the sample is taken from a group of people easy to contact or to reach. For example, standing at a mall or a grocery store and asking people to answer questions would be an example of a convenience sample.
What is the experimental group and control group exposed to the same?
An experimental group is a test sample or the group that receives an experimental procedure. This group is exposed to changes in the independent variable being tested . ... A control group is a group separated from the rest of the experiment such that the independent variable being tested cannot influence the results.
