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Terms in this set (20)
The act of noticing and describing events or processes in a careful, orderly way; use 5 senses. Example: The plant smelled like a rose.
A conclusion or explanation you jump to based on your observations and prior knowledge. Example: Plants need water to live.
A prediction about what will happen under particular circumstances (like if you do an experiment). Example: Plants that get more water will grow more.
Information gathered that is not in numerical (number) form; not an opinion. Example: The plant had leaves that were yellow with brown spots.
An observation that is measurable such as amount, height, length, weight etc. Example: The plant is 37.4 cm tall.
The one variable that is changed or manipulated by the scientist; it can mess with the DV but the DV can't mess with it! Example: the amount of water the plant gets (I can give the plants different amount of water.)
The variable being tested and measured- the data; the IV can mess with it but it can't mess with the IV! Example: how tall the plant grows (I will measure this to make a conclusion.)
Prejudice or predisposition toward one side of a subject or issue. The scientific method aims to remove bias as much as possible.
1st step of scientific method; written as a question. Example: Does the amount of water given to a plant have an effect on its growth?
In an experiment, the standard that is used for comparison; the "plain, old, nothing-special" group. Example: the plant getting the normal amount of water.
Add the numbers up and divide by the number of numbers that you added!
A single time an experiment is conducted; the more trials, the more valid or reliable the result.
Accuracy, correctness; reliability; to increase validity, gather as much data as possible by increasing subjects or increasing trials.
A fake substance (usually a sugar pill) given to the control group in an experiment; can have a positive mental effect but doesn't have a physical effect.
Backed up, proven; in a conclusion, you must state whether your hypothesis is supported or refuted.
Proved to be wrong or false; in a conclusion, you must state whether your hypothesis is supported or refuted. It's okay if your hypothesis is refuted- you still learned something!
An explanation of the natural world that has been tested in many ways, by many scientists, in many different ways, with a significant amount of data.
The number of subjects used in an experiment or study. Generally, the larger the better. Example: Thirty plants were used in the experiment.
People that have agreed to participate in a scientist's experiment.
The group in an experiment that receives the variable being tested.
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