Data Analysis

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Data Analysis
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Time spent in the light
A tank was set up so that half of it was lit and
the other half was dark. Six different species
of animals were placed in the tank and monitored
for 100 minutes. The amount of time they spent
in the light was recorded.
What type of graph would be most appropriate for
this data set?
Which animal (s) are probably nocturnal?
Why else (other than being nocturnal) may animals
2 and 5 have spent very little time in the
light?
Time spent in the light (min)
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A town was surveyed to see what types of pets
were most common. What type(s) of graphs would
be appropriate to show this data?
Approximately what percent of pets were dogs?
What type of pet was most common?
What type of pet was least common?
Pets
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Pumpkin seeds were sprouted and grown in three
different environments. Their height was
monitored over a six week period. What would be
the most appropriate type of graph for this data?
What was that best environment for the pumpkin
seeds? Explain your answer!
Plant Growth
Plant Height (cm)
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Insects have a waxy coating that protect them
from drying out. Grasshoppers were raised in
four different temperature environments. After
they molted (shed their exoskeletons), their wax
was tested to determine its melting point. What
is the most appropriate type of graph for this
data?
Why would it be detrimental to an insect in a
warm environment to have wax that melts at a
lower temperature?
What was the melting point of the wax of the
insects raised in a 34oC environment?
What is the relationship between environment
temperature and wax melting point?
Wax Layer Melting Point
Temperature that wax melted (oC)
Temperature of the insects environment
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The number of students in the class with As, Bs,
Cs, Ds and Fs was recorded. What is/are the most
appropriate type of graph(s) for this data set?
How many students are passing the class?
What is the most common grade?
What is this type of distribution called?
Grades
Number of Students
A
B
C
D
F
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This is the same data on a pie chart. What
advantage does the histogram have over the pie
chart?
Grades
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Marine snails were placed in different
temperature water. Their size after 1 month is
compared. What is the most appropriate type of
graph for this data?
What was the average size of the snails that were
in 30oC water?
What temperature water did the snails grow better
in?
Snail Growth
Size in cm
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Some snails were grown in water that also
contained shrimp. Otherwise, the conditions were
identical. Their size after 1 month is compared.
What is the most appropriate type of graph for
this data?
Did the snails grow bigger with or without shrimp?
What might have caused the observed results?
Snail Growth
Size in cm
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This graph combines the previous two
experiments.What is the optimal environment for
the snails?
Can the left bar be compared to the middle bar?
Were the snails grown in their optimal
environment?
Can the left bar be compared to the right bar?
Can middle bar be compared to the right bar?
Snail Growth
Size in cm
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The volume of air in a SCUBA tank and the
internal pressure of the tank were measured.
What would be the most appropriate type of graph
to show this data?
What is the relationship between tank volume and
air pressure?
What is the independent variable?
What is the dependent variable?
Tank Pressure
Pressure (psi)
Volume of air (liters)
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Graphing Growth Rate Data

• Is there any part of your graph that shows the
  girls being taller than the boys? If there is,
  circle the area.
• Who grows taller overall, boys or girls?
• Do humans grow at a continuous rate or in spurts?
  Explain your answer.
• What may be causing the observed results?