Biology303,EssayPortionofExamII,Summer2017
For the following question, provide a complete and concise answer in plain English.
Wherever technical language is used, be sure to explain each term used. Complete all
work on your own and express your ideas in
Chapter 1 Exercises
27.
a) 130 undetermined manatee deaths
b) 21%
c)
80
60
0
20
40
Number of Deaths
100
120
Manatee Deaths in 2012
Watercrafts
Perinatal
Natural
Cold Stress
Flood gates
Humans
Undetermined
d) Yes, we could display these data in a pie chart
Skills Test III R You Experienced?
Complete each of the following tasks in R, then copy the display buffer from the R Console and
paste it into this document, at the bottom of the last page. If you make mistakes in the R Console as
youre working on the sk
Chapter 18 Exercises
13. A
14. C
15.B
16.B
17.B
18.C
19.A
20.C
21.B
22.C
23.
a) The female data is a bit skewed, but the combined sample size is large
enough.
b) 10.4 to 22.9 mm (df=32)
28.
a) t procedure would be appropriate here
b) Yes, the data support
Chapter 8 Exercises
24.
27.
a) Completely randomized design: 12 birds randomly selected for the placebo
group, the remaining 15 making up the immune challenge group.
b) Using table A the select the 12 birds in the placebo group:
05,19,04,25,20,16,18,07,13
Chapter 4 Exercises
14. B
15. C
16. C
17. A
18. C
19. A
20. A
21. A
22. A
28.
a)
150
100
0
50
Absorbance
200
Keeping Water Clean
0
500
1000
Nitrates
1500
2000
The correlation coefficient is .
999, so the calibration does
not need to be done again.
b) y=14
Chapter 17 Exercises
17.B
18.C
19.A
20.A
21.B
22.C
23.B
24.A
25.B
26.C
27.
a) mean=15.59ft, s=2.550ft
b) 14.81 to 16.37ft. Great white sharks do not average 20 feet in length.
c) What population are we examining? Are these full-grown sharks? Are we
focusi
Chapter 3 Exercise problems
15. C. Age 17months, Score 121
16. B Negative
17. C. -1< r < 1
18. C. cant tell with seeing data
19. B. Increase
20. A. r=0.88
23.
a)Yes, I think that D. magna is an effective grazer of G. semen
b) r= -.93 supporting that D. ma
Chapter 2 Exercises
27. Median is 110
1st Quartile is 57.50
3rd Quartile is 145
29.
a)The mean is meant to find the average of a set of data and the standard
deviation is meant to find the spread of the mean. Standard deviation is
always zero or zero< s.
Chapter 7 exercises
14. C
18. A
29. In a stratified random sample , the entire population is broken up into
subgroups; then the SRS is taken from each of the individual subgroups, and the
SRSs are finally recombined to create the sample. This ensures that
Biology303,EssayPortionofExamI,Summer2017
For the following question, provide a complete and concise answer in plain English.
Wherever technical language is used, be sure to explain each term used. Complete all
work on your own and express your ideas in y
Exam 1 Biostatistics
January 22, 2016
Empirical dilemma: inappropriate technique, less powerful
o Add data that isnt there
o Less data
Validity: appropriateness of test or measurement
Consistency: repeatability
Reliability: test is reliable
1. Test/Retest
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Spring 2012 EXAM 2
Dr. Eshelman
General instructions. Use your time wisely. The points available for each question are indicated
after the question. Read Q of the questions before starting to work the exam. This will
allow yo
Exam 3 Biostatistics
March 7, 2016
Multiple Sample Tests
o F Distribution (Fisher)
Different shapes for different degrees of freedom
One tailed test, not symmetrical
H 0 : 1=2=3= 4= 5
Analysis of Variance
2
S1
2
S2
The f distribution
One tailed because
Exam 2 Biostatistics
February 8, 2016
Measure of Distribution
The chi square distribution (x2)
k
2
(observedexpected )
2
x =
expected
i=1
o Continuous distribution
o Values range from zero to infinity
o Approaches the x-axis asymptotically only on the ri
Final Exam Notes Biostatistics
April 8, 2016
Regression: one dependent variable with one independent variable
Correlation: how two independent variables vary together
Regression
1. If no significance is found, there is no relationship NOT a cause and effe