Question

question 1
1 pts

a researcher is investigating how increasing water temperature affects the amount of dissolved oxygen available for aquatic life. in aquatic ecology, it is well known that warmer water holds less dissolved oxygen. to explore this relationship, the researcher collects the following data.

temperature <- c(5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27)

dissolved_oxygen <- c(15.3, 12.4, 10.2, 13.0, 11.0, 10.5, 11.9, 10.1, 8.8, 9.8, 9.1, 8.7)

identify the independent and dependent variables.

independent variable: select

dependent variable: select

Explanation:

🆕 New Concept Discovered: Independent and Dependent Variables
The cause (independent) and the effect (dependent).

Step 1: Identify the Independent Variable

The independent variable is the factor that the researcher manipulates, controls, or uses as the predictor to see its effect on another variable.

In this study, the researcher is investigating how changes in water temperature affect the amount of dissolved oxygen. Therefore, temperature is the cause or predictor variable.

• Independent variable: Temperature

Step 2: Identify the Dependent Variable

The dependent variable is the outcome or response that is being measured. It "depends" on the changes in the independent variable.

Here, the amount of dissolved oxygen changes in response to the water temperature.

• Dependent variable: Dissolved oxygen level

Answer:

• Independent variable: Temperature
• Dependent variable: Dissolved oxygen level