Name: …………………………………………………………..
Block: ………..
Date: ………………………………….
Sc10 Digital Immersion: Presenting Data: Data Tables
If you are able to analyze data correctly – even if the data is not perfect, you will learn to think the way a
scientist thinks. Since this is a computerized course it will be important for you to investigate and practice data
base software such as Microsoft© Excel® or Apple© Numbers® or Google© Docs Spreadsheet.
Exercise 1:
Four brothers exhibit the following heights: 1.83m, 1.75m, 1.63m & 1.87m.
What is the average height of the brothers?
1.77m
Exercise 2:
Use the following information to make a data table in a data base software of birds seen on the Stanley Park
Seawall during your run last weekend. Be sure to include totals & averages in your table. Cut the table and
paste it in the space provided. Once you have made the data table, use the information to answer the
questions.
Now then, let’s see…
On the 1st leg of your run, you saw: 47 Canada Geese
During the 2nd leg you saw 50 Buffleheads, 8 Golden Eyes and 15 Canada Geese;
During the 3rd leg you saw 2 Herons and 8 Cormorants.
Data table:
Run
Legs
1st
2nd
3rd
Total
Average
Canada
Geese
Golden
Buffleheads Eyes
47
15
50
Herons
Cormorants Total
8
2
8
62
50
8
2
8
20.66666667 16.6666667 2.66666667 0.666667 2.66666667
47
73
10
130
Average
9.4
14.6
2
26
2. How many Herons did you see on the 1st leg of
your run?
Herons: 0
1. What was the total number of Canada Geese and
Golden Eyes seen on your run?
Canada Geese: 62
Golden Eyes: 8
Total Birds: 70
4. Why do you suppose you didn’t see the same
types of birds throughout your run along the
Seawall?
Some of the birds have different nesting grounds
and feeding areas than other birds. Some birds are
less aggressive than others too.
3. What was the average number of birds seen per
leg of your run?
1st Leg: 9.4
2nd Leg: 14.6
3rd Leg: 2
Exercise 3:
In an experiment on plant growth and overcrowding, plants of the following heights grew in 3 equal-sized
containers. The scientists added nitrogen to the water of flowerpot #1, potassium to the water of flowerpot #
2, and nothing to the water in flowerpot #3.
The results are below.
Flowerpot
1
2
3
24 hrs
48 hrs
9.5 cm
5.6 cm
10.4 cm
6.4 cm
Time (hrs)
72 hrs
17 cm
11.9 cm
7.1 cm
1. What is the average height of the plants after
72 hours?
Average Height: 12 cm
2. In which flowerpot did the plants grow
fastest? Why do you think this occurred?
Flowerpot`s 1 and 2
Because they had additives in them which
allowed the plants to grow at a faster rate.
96 hrs
25 cm
13.2 cm
7.2 cm
120 hrs
7.8 cm
3. Explain why it is important that the scientists
did not add anything to the water of flowerpot
# 3.
Because it shows how long it takes for plants to
grow naturally and that natural growth acts as
a control to overcrowding too.
4.
State a possible conclusion of the scientists.
Plants that have nitrogen and potassium added to
them will grow faster and are more likely to
overcrowd than plants that grow naturally without
anything added to them.
Reading Graphs & Graphing
Exercise 1:
The following is a graph of tidal heights taken from Point Atkinson on October 25, 1999. Use the graph to
answer the questions on the following page.
1. What was the lowest tide on October 25th and
what time did it occur?
0.3 m high at 11:00pm
3. At what times were the high tides on Oct. 25th?
Hint: there are two high & two low tides per
day.
5:05am and 3:30pm
2. What was the average tide height between
7:00am & 11:00am? 2.2m high
4. What was the tide height at 1:00pm?
2.7 m high
Exercise 2:
A clam farmer has been keeping records concerning water temperature(°C) and the number of clams developing
from fertilized eggs. He has been adjusting the water temperature in the clam tank and then checking on the
developing clams. The results are shown in the data table below.
Water Temperatur oC
15
20
25
30
35
40
45
50
Number of developing
clams
75
90
120
140
75
40
15
0
1.
What is the independent variable?
Water Temperature
2. What is the dependent variable?
Number of Developing Clams
3.
Cut and paste the data in the space provided below. Make sure
the variables are on the correct axis. Label the axes & make a title.
Number of
Developing
Clams
Water Temperature oC
4. According to your graph, what is the optimal temperature for clam development?
30 Degrees Celsius
Exercise 3:
A lab group was assigned a task. They had to track leaves that floated past them in a runoff channel. The
group’s task was to measure how far the leaves travel in different amounts of time. They placed a tape measure
along the channel to measure the distance and borrowed a stopwatch to record the time. They followed one
leaf for 14 seconds recording the distance travelled every 2 seconds. The data table they created is below.
Time
(seconds)
0
2
4
6
8
10
12
14
20
Distance travelled
(cm)
0
5
11
16
25
27
33
38
?
1.
Which is the independent variable?
Time
2.
3.
Which is the dependent variable
Distance travelled
Plot the points (from 0 to 14 seconds) on a graph. Make sure the variables
4.
Use your graph to answer the questions below.
Interpolating Graph
Distance travelled (cm)
Time (seconds)
Extrapolating Graph
Distance travelled (cm)
Time (seconds)
5. Use your extrapolated line to determine the distance the leaf reached at 26 seconds.
The leaf has reached 74 cm.
6. Use your interpolated line to determine the time the leaf was at 18 cm.
The time was 6.5 seconds.