Independent and Dependent Variables

One chicken is injected with a growth hormone while another chicken is not injected with a growth hormone. After one year, both chickens are weighed. What is the independent variable?

• If a chicken was injected with a growth hormone or not

• The weight of the chicken

• The type of chicken

Tags

NGSS.MS-LS1-5

One chicken is injected with a growth hormone while another chicken is not injected with a growth hormone. After one year, both chickens are weighed. What is the dependent variable?

• If the chicken was injected with a growth hormone or not

• The weight of the chicken

• The type of chicken

Tags

NGSS.MS-LS1-5

A bug repellent was sprayed on one arm. On the other arm, the bug repellent was not sprayed. After 2 hours, the number of bug bites are recorded. What is the independent variable?

• The type of bug repellent

• If an arm was sprayed with bug repellent or not

• The number of bug bites

A bug repellent was sprayed on one arm. On the other arm, the bug repellent was not sprayed. After 2 hours, the number of bug bites are recorded. What is the dependent variable?

• The type of bug repellent

• If an arm was sprayed with bug repellent or not

• The number of bug bites

Javier and his twin sister both have the same science exam. Javier sleeps for 9 hours the night before the exam and his sister sleeps for 6 hours. After they take the test, they both compare their test grades. What is the independent variable?

• The number of hours of sleep they had

• The type of test

• The test grades

Javier and his twin sister both have the same science exam. Javier sleeps for 9 hours the night before the exam and his sister sleeps for 6 hours. After they take the test, they both compare their test grades. What is the dependent variable?

• The test grades

• The number of hours of sleep they had

• The type of test

Group A decides to exercise for a month. Group B decides not to exercise during the same month. Afterwards, they measure the amount of weight that each group lost. what is the independent variable?

• How much weight each group lost

• The type of exercise

• If group exercises or not

Group A decides to exercise for a month. Group B decides not to exercise during the same month. Afterwards, they measure the amount of weight that each group lost. what is the dependent variable?

• If a group exercises or not

• How much weight each group lost

• The type of exercise

One math class studies for an upcoming test while another math class does not study for the same test. The test scores of the two classes are compared afterwards. What is the independent variable?

• The test scores

• If a class studies or not

• The type of class

One math class studies for an upcoming test while another math class does not study for the same test. The test scores of the two classes are compared afterwards. What is the dependent variable?

• If a class studies or not

• The type of class

• The test scores