Question

pre-algebra ic sem 2 fall 2025
constructing scatterplots
classifying variables as independent and
dependent
identify the independent and dependent variables of these data sets: 1) number of girls who
play hockey each year. 2) shoe size according to height. 3) calories burned for each lap run.
independent
calories burned
height
laps
year
number of girls
shoe size
dependent

Explanation:

Step1: Recall the definitions

The independent variable is the variable that is changed or controlled in a scientific experiment. The dependent variable is the variable that is affected by the independent variable.

Step2: Analyze each pair

• For "Number of girls who play hockey each year":
• The independent variable is "year" (because the year is what we change, and we observe how the number of girls changes with respect to the year).
• The dependent variable is "number of girls".
• For "Shoe size according to height":
• The independent variable is "height" (height is the variable we assume causes a change in shoe size).
• The dependent variable is "shoe size".
• For "Calories burned for each lap run":
• The independent variable is "laps" (the number of laps we run, and calories burned depends on the number of laps).
• The dependent variable is "calories burned".

Answer:

Independent variables: year, height, laps.
Dependent variables: number of girls, shoe size, calories burned.