Quantitative or Qualitative
Define qualitative and quantitative
Qualitative: words/descriptions/qualities
Quantitative: numbers/quantities
What is the base unit for time?
seconds
Walker is testing which fertilizer will grow the tallest grass. The height of the grown grass is the _____.
DV
Find the IV: You are designing an experiment about whether students make fewer errors on math tests when they can use calculators on the test. All the students take the same test, but one class period may use calculators while the other may not
calculators
What is a constant?
things that are kept the same for the treatment group and control group
Qualitative or quantitative: How many questions did you miss?
quantitative
True or false: inches are the base unit for length?
FALSE
Find the IV:
Mr. Anderson allowed his third period class to eat snacks while taking an exam. His fourth period class was not allowed to eat snacks while taking the same exam. To cover up the sound of crunching, he also played music during third hour exam. He compared the test averages from both classes. Neither class was allowed snacks before the experiment and both classes had similar test averages on all previous tests.
Snacks
Find the IV: A study is investigating the impacts of caffeine on the sprinting ability of runners. A group of 100 runners of similar fitness levels are divided into two groups of 50 runners each. Each group trains using the same routine for two weeks. Both groups are only allowed to drink plain water for the duration of the study. One group is given a 100 mg caffeine pill 30 minutes before the start of every workout. The fastest and slowest 100 meter dash times are recorded daily for each runner.
caffeine pill
What is a control group?
a group or section that does not get the IV
Qualitative or quantitative: What kind of flowers?
Qualitative
What is the base unit used to measure the amount of substance?
mole
You are designing an experiment about whether students make fewer errors on math tests when they can use calculators on the test. All the students take the same test, but one class period may use calculators while the other may not. List a constant described in the experiment
same test
Find the DV: A study is investigating the impacts of caffeine on the sprinting ability of runners. A group of 100 runners of similar fitness levels are divided into two groups of 50 runners each. Each group trains using the same routine for two weeks. Both groups are only allowed to drink plain water for the duration of the study. One group is given a 100 mg caffeine pill 30 minutes before the start of every workout. The fastest and slowest 100 meter dash times are recorded daily for each runner.
The time it takes to run a 100 meter dash
What is a confounding factor?
anything other than the IV that could change DV
Qualitative or quantitative: Which student had the highest grade?
Qualitative
Match the term and definition : mass per unit volume
density
What would be the dependent variable in this experiment: Jane is testing whether her cat gains more weight when eating wet food or dry food. The same amount of food is served every time.
Weight gain
Find a listed constant: A study is investigating the impacts of caffeine on the sprinting ability of runners. A group of 100 runners of similar fitness levels are divided into two groups of 50 runners each. Each group trains using the same routine for two weeks. Both groups are only allowed to drink plain water for the duration of the study. One group is given a 100 mg caffeine pill 30 minutes before the start of every workout. The fastest and slowest 100 meter dash times are recorded daily for each runner.
-fitness level
-group size (50)
-time and routine of training
-drink (plain water)
What is the IV: Sally decided to see if adding heat when coloring hair will make the dye last longer. She bleaches clients hair to the same shade of blonde. On half her clients she does the regular no-heat process and on the other half she applies heat. All clients chose their own color and all color is applied for 30 minutes. Because the heat can damage hair, she also applies a heat protecting cream when she adds heat.
Heat
Qualitative or quantitative: Which state had the greatest number of severe thunderstorms last year?
Qualitative
Meters per second would be a good example of which kind of unit?
derived unit
Find the confounding variable: Mr. Anderson allowed his third period class to eat snacks while taking an exam. His fourth period class was not allowed to eat snacks while taking the same exam. To cover up the sound of crunching, he also played music during third hour exam. He compared the test averages from both classes. Neither class was allowed snacks before the experiment and both classes had similar test averages on all previous tests.
Music
What is the control group: A study is investigating the impacts of caffeine on the sprinting ability of runners. A group of 100 runners of similar fitness levels are divided into two groups of 50 runners each. Each group trains using the same routine for two weeks. Both groups are only allowed to drink plain water for the duration of the study. One group is given a 100 mg caffeine pill 30 minutes before the start of every workout. The fastest and slowest 100 meter dash times are recorded daily for each runner.
Runners who do not take the caffeine pill
Find a confounding factor: Sally decided to see if adding heat when coloring hair will make the dye last longer. She bleaches clients hair to the same shade of blonde. On half her clients she does the regular no-heat process and on the other half she applies heat. All clients chose their own color and all color is applied for 30 minutes. Because the heat can damage hair, she also applies a heat protecting cream when she adds heat.
Heat protecting cream