SAT

SAT, 04.07.2019 21:00, clevelandjaniya

People taking part in an experiment are called variables. true false

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Biology, 12.07.2019 16:00, yesmi

Which of the following statements describes all the variables in an experiment? a. all variables are kept the same from one part of the experiment to another. b. all variables affect the results of the experiment. c. all variables are measured to provide data for the experimental results. d. all variables are changed from one part of the experiment to another.

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Biology, 02.08.2019 04:30, aariyahjc9188

20points scientists use many scientific methods to answer their questions about the natural world. true false 10 points question 2 scientists ask questions based on the observations they hear about from others. true false 10 points question 3 an error in the preparation of a lab sample led alexander fleming to the discovery of the antibiotic penicillin. true false 10 points question 4 a hypothesis is an assumption about what will happen during an experiment or an observation. true false 10 points question 5 an experiment includes variables that are all kept constant. true false 10 points question 6 a well-designed experiment includes an experimental group and a control or baseline group. true false 10 points question 7 the variable group in an experiment gives you something to compare your experimental group to. true false 10 points question 8 to test their hypotheses, scientists perform carefully planned procedures called conclusions . true false 10 points question 9 sometimes, however, scientists have no choice but to conclude that they haven't answered their question. they might need to collect more data, restate their hypothesis, or design a different experiment. true false 10 points question 10 scientists communicate their findings so that others may restudy, improve, or expand them. true false

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Mathematics, 11.09.2019 04:30, dondre54

The process of manipulating one or more independent variables and measuring their effect on one or more dependent variables while controlling for the extraneous variables is called an experiment. a. true b. false

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