Question

During an investigation, Sam observes the number of hummingbirds that come to his large bird feeder at different times of day. He fills the feeder to the top the first day and counts the number of birds at 6 a.M., noon, and 6 p.M. Over ten days. What are the independent and dependent variables in Sam's investigation? The number of birds is the independent variable, and time is the dependent variable. Time is the independent variable, and the number of birds is the dependent variable. The type of bird food is the independent variable, and the number of birds is the dependent variable. The number of birds is the independent variable, and the type of bird food is the dependent variable.

Answer 1

Answer: Time is the independent variable, and the number of birds is the dependent variable.

Explanation: The independent variable is a variable that's variation doesn't depend on that of another (it's independent!); or in simpler words, it's the variable that is being changed but is not being measured. It is also often denoted by x. The dependent variable is a variable that's values does depend on that of another (it's 'dependent')-- or it's basically the variable that's be measured. Hope this helps! :)