Cricket Lab

The Snowy Tree cricket is called the thermometer cricket because you can actually estimate the temperature outside from the number of chirps you hear it make in a minutes time.

Here is some data from an experiment:

The cricket was chirping about twice a second when the temperature was 70 degrees Fahrenheit.
When it was 46 degrees out the cricket chirped an average of twenty times per minute.
When it was 50 degrees the cricket chirped an average of 40 times per minute.
When the cricket chirped once a second the temperature was recorded to be 54 degrees

Using this information, perform the following tasks and answer in complete sentences the following questions (staple on another sheet if necessary.):

1. Construct a table deciding which is the independent and which is the dependant variable in this experiment. Ask yourself, "Does the tempertaure depend on the chirping of the cricket or does the chirping of the cricket depend on the temperature?" Fill it in.
2. Graph the data labeling your x and y axis with either number of chirps degree or the degrees of temperature.
3. Find an equation that does a good job representing the relationship between the Number of Cricket Chirps per minute (C) and the Temperature (T) in degrees Fahrenheit (it is a linear relationship so you can use slope intercept form to set it up).
4. If the cricket chirps 200 times per minute use your equation to estimate the temperature.
5. Find the x and y intercepts and describe what each means in terms of the experiment.
6. Lastly, it does not make sense to graph this relationship in all four quadrants of the coordinate plane. Why is that?