table actions menu Name Daphnia Trial 1 HR Daphnia Trial 2 HR Daphnia Trial 3 HR Average Heart Rate conc. X bpm var bpm var bpm var bpm Y 1 2 3 4 5
Note: These directions will help you collect data that will answer questions about different concentrations of a single chemical. If you have a different question, you will need to modify your data table, the data collected, and graph.
1. Identify at least 4 different concentrations of the chemical for which you wish to collect data. Type the name of your chemical at the top of the first column and record the concentrations in your data table.
2. For each concentration you will collect heart rate data for three different daphnia.
a. Select a daphnia trial you wish to observe.
b. Select a video speed at which you wish to count the heart beats of the daphnia.
c. Count the heart beats in your selected video.
d. Remember all of the videos show 15 seconds. Multiply your 15 second count by 4 to then have beats per minute for the units of heart rate. Record your heart rate calculation (bpm) in the table.
e. The table is set-up to automatically calculate the average heart rate for your three trials.
3. Create a graph by
a. configuring the X-axis with your independent variable (drop down menu).
b. configuring the Y-axis with the dependent variable: the average heart rate column (drop down menu).
|
table actions menu
|
Name
|
Daphnia Trial 1 HR
|
Daphnia Trial 2 HR
|
Daphnia Trial 3 HR
|
Average Heart Rate
|
|---|---|---|---|---|---|
|
conc.
X
|
bpm
var
|
bpm
var
|
bpm
var
|
bpm
Y
|
|
|
1
|
|
|
|
|
|
|
2
|
|
|
|
|
|
|
3
|
|
|
|
|
|
|
4
|
|
|
|
|
|
|
5
|
|
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
