Sample experiments with variables
[DOC File]Experimental Scenarios
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Scenario One: The effect of fertilizer on plants. Description: John’s biology class was studying carious ways to recycle materials, including the use of compost as fertilizer.
[DOC File]Scientific Method Lab
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Identify the independent variables in your different experiments: _____ _____ Identify the dependent variable in all of your experiments: _____ Since you are not necessary a cricket expert, you will have to do some exploration by running different tests on different factors that could affect cricket chirping.
[DOC File]LAB REPORT TEMPLATE
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Never perform unauthorized experiments. Keep your lab bench organized and free of apparel, books, and other clutter. Know how to use the safety shower, eye wash, fire blanket, and first aid kit. DRESS FOR LABORATORY WORK . Tie back long hair. Do not wear loose sleeves, as they tend to get in the way. Wear closed toed shoes with tops.
[DOC File]More Experimental Design Practice
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Identify in each of the following experiments: independent variable –double underline. dependent variable---circle. constants-(controlled variables)—outline with a rectangle. control experiment--highlight. repeated trials/sample size--underline once. Michael put 100 red seeds, 100 brown seeds, and 100 yellow seeds in his bird feeder.
Independent and dependent variables: Practice worksheet
Independent and dependent variables: Practice worksheet. Please identify the independent and dependent variables in the following descriptions of experiments: Students watched a cartoon either alone or with others and then rated how funny they found the cartoon to be.
[DOC File]Experimental Design
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III. Sample surveys are observational studies, not experiments. 12. To survey the opinions of bleacher fans at Wrigley Field, a surveyor plans to select every one-hundredth fan entering the bleachers one afternoon. Will this result in a SRS of Cub fans who sit in the bleachers. a. Yes, because each bleacher fan has the same chance of being ...
[DOC File]Experimental Design Worksheet
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What could be the controlled variables? ... Directions: Read the following experiments and fill in the blanks that follow. For some answers, there may not be a control group listed in the example, or at all. 1. A study was created to test the effects of jazz on people’s sleep patterns. The hypothesis of the experiment was that if people ...
[DOCX File]Sampling and Experimental Design Practice Test
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(b) A large sample size always ensures that our sample is representative of the population. (c) If all other things are equal, we need a larger sample size for a larger population. (d) In a properly chosen sample, an estimate will be less variable with a large sample size and hence more precise.
[DOC File]Speed, Velocity, & Acceleration Lab
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variables. A . variable. is a factor in the experiment that is changed in order to see a different experimental result. The . control. is the part of the experiment that remains unchanged. You are going to design and conduct two experiments using the car and ramp. Each experiment should look at one variable that you think will affect the speed ...
[DOC File]A researcher was investigating variables that might be ...
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A researcher was investigating variables that might be associated with the academic performance of high school students. ... parents who brought their babies into the University of Denver Infant Study Center to participate in one of a number of experiments between 1988 and 1991. ... Based on a sample of the salaries of professors at a major ...
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