1. Name:____________________________________________Date:_____________Period:______________
Graphing Lab Data:
 Goal: collect data from a lab setting and communicate your results by creating a scatter plot.
 Materials:
o Piece of string
o Ruler (cm)
o Pen/cil
o Lab sheet
 Procedures:
o Using the string measure the diameter and the circumference of at least 10 different round objects in
the room.
 Diameter is the distance from one side of the round object, straight through, to the other side of
the round object.
 Circumference is the circular distance around the object.
o Plot the data on the table below
o Graph the data on the graph below.
o Draw a line of best fit
Object Diameter (cm) IND VAR Circumference (cm) DEP VAR

2. Follow up questions:
1. According to your measurements, graphs, and predictions do you see any relationships between diameter and
circumference of a round object? If so what are they?________________________________________________
____________________________________________________________________________________________
_____________________________________________________________________________________
2. Predictions:
a. What is the diameter of an object with a circumference of 24 cm? _________.
b. What is the circumference of an object with a diameter of 6 cm? __________.
c. What is the circumference of an object with a radius of 2 cm? __________.