Directions: Gather up ten circular objects. The
greater they vary in size the better. The first column in your chart should
contain the names or some identifying description of each object you have
chosen. The diameter and circumference of each object must be measured with a
tool. They count as “direct data” which means you must NOT use a formula to get
the diameter or circumference. Diameter is the distance across a circle from
one point on the outer parameter to a different point on the outer parameter
that passes through the center. The circumference is the distance around the
parameter of the circle. The ratio is classified as “indirect data” which means
that you MUST use a formula to calculate this data. The formula you need to use
in order to calculate the ratio is simple circumference divided by diameter.

1.   
Finish this hypothesis
(it’s a guess, so it’s okay if you end up being wrong so be honest):

As my objects increase in size, their circumference to diameter ratio
will:



 

Choose an item.

2.   
Fill out the chart.

3.   
Calculate the average ratio
and place it under the chart.

4.   
Insert a scatter plot graph
with the y axis being circumference and the x axis being diameter.

·      
This must be done using
graphing software, preferably Microsoft Excel or Desmos.

5.   
Lastly, indicate what
happened to the ratio. As your objects increased in size, did the ratio
increase, decrease, remain approximately the same, or fluctuate wildly?

Insert Scatter plot
graph below: Picture from microsoft excel or you could use this, I belive its free, https://www.desmos.com/ 

Average Ratio: Click or tap here to enter
text.