Question

directions: read the following experiments and determine the independent variable, dependent variable, and appropriate type of graph. make sure to include the following in your graphs: -rubric for graph requirements: 1. y-axis shows the dependent variable (1pt) (data you collect/measure from experiment) that includes 1 scale (number) that is equal in size - dont smush data close together! (1pt) 2 label that includes a description of the variable and correct units (2pts) 2 x-axis shows the independent variable(1pt) (what you are testing in the experiment) that includes: 1 scale (category or number) that is equal in size and chosen to plot data across paper (dont smush all data close together!) (1pt) 2. label that includes a description of the variable and correct units (2pts) 3. key to differentiate among different types of data: 1. data must be clearly differentiated by different colors or different types of lines (1pt) 4. title at the top of the graph that is correct and includes information for both dependent variable (y-axis) and independent variable (x-axis). (2pts) use the following template ... (say to yourself, \this graph shows\ ...and write information shown on y-axis first and then information shown on x-axis to make a clear and complete title) experiment a: mr. andrews is exercising by running up and down the stairs. consequently, his heart rate changes. below are his heart rate readings every minute for the first ten minutes he is exercising. independent variable:_____________________ dependent variable: ___________________ type of graph: ______________________ experiment a: table1

time (minutes)	heart rate (beats/minute)
2	62
3	64
4	70
5	78
6	85
7	90
8	100
9	110
10	110

Explanation:

• Independent Variable: The independent variable is what is being manipulated or is the cause in an experiment. In Experiment A, time (in minutes) is what's being tested as it progresses (we're looking at heart rate over each minute), so time is the independent variable.
• Dependent Variable: The dependent variable is what is being measured or is the effect, which depends on the independent variable. Here, heart rate (beats per minute) changes as time (during exercise) changes, so heart rate is the dependent variable.
• Type of Graph: A line graph is appropriate here because we are showing the change in a continuous dependent variable (heart rate) over a continuous independent variable (time, in minutes). Line graphs are good for showing trends over time or continuous data.

Answer:

• Independent Variable: Time (minutes)
• Dependent Variable: Heart Rate (beats/minute)
• Type of Graph: Line Graph