Name: _______________________________________________ Date: __________
Block: _________
Introduction to Biology Review Sheet: Extra Credit
Experimental Scenario #1:
Allen read that the gas company was burying sheets of magnesium next to pipelines in order to
prevent rusting. He decided to investigate the effectiveness of various metals in preventing rusting.
He placed the following into three separate test tubes of water: A) Iron nail. B) Iron nail wrapped
with aluminum strip. C) Iron nail wrapped with magnesium. He used the same amount of water,
equal amounts of the metals, and the same size iron nails. At the end of five days, he recorded the
amount of rusting and the color of the water.
Null Hypothesis: __________________________________________________________________________
________________________________________________________________________________________
Alternative Hypothesis 1 (If/Then/Because): _____________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Alternative Hypothesis 2 (If/Then/Because): _____________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Independent Variable: ______________________________________________________________________
Dependent Variable: _______________________________________________________________________
Is the dependent variable quantitative or qualitative data? Explain why? _______________________________
________________________________________________________________________________________
Control Group: _______________________________ Constants: ___________________________________
What is the difference between precise and accurate data? ________________________________________
________________________________________________________________________________________
What would a p-Value tell you about the null hypothesis? __________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Descriptive Statistics
Find all the calculations for the following data:
20
23
Descriptive Statistics
Mean
Median
Mode
Max
Min
Variance
Sample Size (n)
25
19
20
21
23
25
18
Name: _______________________________________________ Date: __________
Block: _________
Creating a Histogram
Create a histogram for this data set {3, 11, 12, 19, 22, 23, 24, 25, 27, 29, 35, 36, 37, 45, 49} using a
bin width of 10.
The Characteristics of Living Things:
1. List the eight characteristics of living things.
2. Compare sexual and asexual reproduction.
3. What is homeostasis? Given an example of how it is maintained.
4. List several characteristics (and describe one of them) for why viruses are currently classified as nonliving.