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What are expectations that change how results are viewed?
| A | B |
|---|---|
| bias | occurs when a scientist’s expectations change how the results of an experiment are viewed |
| model | can be used to represent an idea, object, or event that is too big, too small, too complex, or too dangerous to observe or test directly |
What occurs when the scientists expectations change how the results are analyzed?
A bias occurs in an experiment when a scientist expects something to happen and lets this influence how the results are viewed. Scientists try to reduce bias whenever they can by doing the experiment many times and keeping careful notes about observations.
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Can occur when a scientist’s expectations affect how the results are analyzed or the conclusions are drawn?
Bias – occurs when the scientist’s expectations affect how the results are analyzed or how conclusions are drawn.
What is a logical explanation to a problem based on observation?
A scientific theory is an explanation of things or events based on knowledge gained from many observations and investigations.
What is the one factor that is changed or tested by the person doing the investigation?
A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled. The independent variable is the one that is changed by the scientist.
What is a testable prediction called?
Hypothesis: A testable prediction often implied by a theory.
How do you know if you have a scientific problem or not?
We learned that a scientific problem is a question that you have that can be answered via an experiment. Once you’ve determined that your problem is indeed a scientific one, you can then conduct an experiment. Your experiment needs to focus on your question and must be repeatable by others.
What is an explanation based on observations from repeated experiments?
An explanation of things or events that is based on knowledge gained from many observations and experiments is a theory. Science is a way of learning more about the natural world. An attempt to explain a pattern observed repeatedly in the natural world is called a scientific theory.
What is a process that uses observation and experimentation to gain knowledge?
Science is a process that uses observation and investigation to gain knowledge about events in nature.
How do observations relate to hypotheses?
Observations leading to a hypothesis come from prior knowledge or research. Observations leading to a hypothesis come from the same experiment. A hypothesis is formed based on observations from many experiments. A hypothesis is formed after making observations but before performing an experiment.
What is the factor that does not vary in an experiment?
Controlled Variable: A controlled variable or constant variable is a variable that does not change during an experiment.
Why are results important in an experiment?
Publishing results of research projects in peer-reviewed journals enables the scientific and medical community to evaluate the findings themselves. It also provides instructions so that other researchers can repeat the experiment or build on it to verify and confirm the results.
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What you measure or observe to obtain your results?
Dependent variables (DV): These are the factor that you observe or measure. As you vary your independent variable you watch what happens to your dependent variable.
What values do scientists often use when evaluating data sets?
Data and scientific conclusions possess some distinguishing characteristics, such as accuracy, precision, reliability, and validity (Houser, 2009). Scientists use these characteristics to evaluate scientific experiments.
What is the importance of recorded results or data in the scientific method?
This means that the method must be recorded with sufficient clarity for other to reproduce the experiment, and any measurements must be recorded sufficiently precisely for others to check whether their own results are ‘the same’.
What changes do you expect when you change the independent variable?
Changes in the independent variable cause changes in other variables. Experiments are designed so the changes in all but one of the other variables are controlled or kept constant. The other variable that can change as a result of changes in the independent variable is called the dependent variable.
What is the variable that is changed to affect the outcome of the investigation?
The two main variables in an experiment are the independent and dependent variable. An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.
What do you call the observed variable that is expected to change as a result of changes in the independent variable in an experiment?
The independent variable in research studies or experiments is the variable that can be altered or manipulated by the researcher or person experimenting. The outcome or variable expected to change due to the alteration of the independent variable is known as the dependent variable.
What is a tested prediction?
A statement or prediction that can be tested is called a hypothesis. A hypothesis is an educated guess or scientific conclusion drawn from predictions… See full answer below.
Is a testable prediction designed to answer a question?
A hypothesis is a tentative answer to a scientific question. A testable hypothesis is a hypothesis that can be proved or disproved as a result of testing, data collection, or experience. Only testable hypotheses can be used to conceive and perform an experiment using the scientific method.
Is a testable statement that proposes an explanation for a set of observations it leads to predictions that can be tested by an experiment?
A hypothesis is a testable statement that proposes an explanation for a set of observations. It leads to predictions that can be tested by an experiment. A prediction describes specific results that can be expected if a hypothesis is true.
What do you think are the characteristics of a good scientific problem?
It should be significant enough to contribute to the existing body of research. It should lead to further research. The problem should render itself to investigation through collection of data. It should be of interest to the researcher and suit his/her skills, time, and resources.
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What are the characteristics of a good scientific problem?
- The problem can be stated clearly and concisely.
- The problem generates research questions.
- It is grounded in theory.
- It relates to one or more academic fields of study.
- It has a base in the research literature.
- It has potential significance/importance.
How do scientists solve problems?
…
As a reminder, here are the steps to the method:
- Identify the problem. …
- Form a hypothesis. …
- Test the hypothesis by conducting an experiment. …
- Analyze the data. …
- Communicate the results.
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