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Marano- Sci. Method

Marano- Scientic Method

When a scientist is trying to answer a question, he/she will often conduct an _____. experiment
the correct procedures followed when conducting an experiment scientific method
Steps of the scientific methods are 1. identify the problem 2. research 3. create a hypothesis 4. experiment 5. make observations 6. make conclusions 7. accept, reject or change hypothesis 8. comumunicate results
hypothesis educated guess
How should you word a hypothesis? If (I do this), then (this will happen) because research says this...
variables factors, conditions, and/or relationships that can change or be changed in an experiment
manipulated variable the variable the scientist chooses to make different
manipulated variable independent
responding variable dependent
responding variable the variable that is forced to change because the manipulated variable has changed
controlled variable everything that is not changed
control group nothing is changed, you have something to compare changes to
Writing a good hypothesis If (manipulated variable changes), then (responding variable will) because research says...
Operational definition describes how a measurement will be made
observations collecting data with one or more senses
quantitative observations observations that may require use of scientific tool (numbers)
qualitative observations observations not based on numbers
data tables must have ______ titles and labels
In a data table columns represent the different _____. variables
LIne graphs must have a _____. title
Each axis on a line graph represents a ______ and should include ______. variable, labels
Which variable is put on the x axis? manipulated
Which variable is put on the y axis? responding
Not all graphs start at _____ zero
When making a line graph, do not connect the line to the ______ unless it was part of the collected data origin
Each line must jump by the (same, different) value. same
trend lines line drawn that is the average of the data, plotted points above and below the line
interpolation if the question is based on data that you did not receive, but you have the data for above and below the question, you could use the average of the two data points
extrapolation when asked a question which is beyond your data, if there is a trend to your data, follow this trend to find your answer
Inferences explanations of observations based on observations and past experience
Inferences can change based on ______ further observations
Why should a good experiment be done several times? to show that the data collected does not change
Created by: seagullq