A company wants to test a new dog food that is supposed to help overweight dogs lose weight. 50 dogs are chosen to get the new food, and 50 more continue their normal diets. After one month, the dogs are checked to see if they lost any weight. The independent variable is the ____, while the dependent variable is the ____. The experimental group is the ____. The control group is the ____ A new sunscreen has been developed that is supposed to be more effective at preventing sunburn. 30 participants spray one arm with the new formula, and spray the other arm with the leading formula. After 4 hours in the sun, their skin is evaluated for any redness. The independent variable is the ____, while the dependent variable is the ____. The experimental group is the ____, while the control group is the ____. A student wants to study the effect of sunlight on plant growth. In his experiment, 12 plants receive normal amounts of sunlight, and 12 plants are kept under bright sun lamps all night long. After 6 weeks, the plants’ heights are measured. The independent variable is the ____, while the dependent variable is the ____. The control group is the ____, while the experimental group is the ____. A sports medicine researcher wants to know whether training in high altitudes will increase a sprinter's speed. In the experiment, six sprinters train at high altitude for six months while six similar sprinters train at normal altitudes for six months. The independent variable is ____, while the dependent variable is ____. The control group is ____ , while the experimental group is ____. A car manufacturer wants to test new brighter brake lights to see if they can quicken the reaction time of drivers behind the car to put on their brakes. They tested 50 cars with the new lights and 50 cars with the original brake lights and recording how long it took for the driver behind to put on their brakes. The independent variable is ____, while the dependent variable is the ____. The control group is the ____ while the experimental group is the ____. A pharmaceutical company tested a new medication to treat high cholesterol. They started with 100 people with similarly high levels. 50 people were given the new medication while the other 50 were given the standard treatment. The independent variable is the ____, while the dependent variable is ____. The control group is the ____, while the experimental group is the ____ .

Experimental Design Practice 7/8G

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?