Transcript Statistical Data Safari

Let me guide your knowledge.
The mean is the average of the numbers added together in a data set, then divided by the amount of numbers
in a data set.
~Bull Shark Measurements~
Female
Male
948
950
952
954
956
958
~Turtle Survival~
25
20
15
Survived
10
Hatchlings
5
0
Blue
Yellow
Green
Red
Orange
Sea Turtle Endangerment Likely
Causes
 Sea turtles virtually everywhere are affected by fisheries, especially loglines, gill
nets, and trawls. The most severe of these impacts are death after
entanglement, habitat destruction and food web changes. Sea turtles and their
eggs are killed by people throughout the world for food, and for products
including oil, leather and shell. Sea turtle habitats are degraded and destroyed
by coastal development. This includes both shoreline and seafloor alterations,
such as nesting beach degradation, seafloor dredging, vessel traffic,
construction, and alteration of vegetation. Plastics, discarded fishing gear,
petroleum by-products, and other debris harm and kill sea turtles through
ingestion and entanglement. Light pollution disrupts nesting behavior and
causes hatchling death by leading them away from the sea. Chemical
pollutants can weaken sea turtles’ immune systems, making them susceptible
to disease. Climate change will increase the frequency of extreme weather
events, result in loss of nesting beaches, and cause other alterations to critical
sea turtle habitats and basic oceanographic processes. It may impact natural
sex ratios of hatchlings and increase the likelihood of disease outbreaks for sea
turtles.
~Bottle Cap Danger~
red
orange
yellow
blue
green
black
white
clear
Bottle caps are not recycled, so they are washed ashore. This prohibits animals from
laying eggs, so no offspring. Percentage is a rate, number, or amount in each hundred.
Frequency Distribution of Sea
Cigars By Size Class
100%
90%
80%
"1-5"
"6-10"
70%
"11-15"
60%
"16-20"
"21-25"
50%
"26-30"
40%
"31-35"
30%
"36-40"
"41-50"
20%
I’m just hanging.
10%
0%
"1-5"
"6-10"
"11-15"
"16-20"
"21-25"
"26-30"
"31-35"
"36-40"
"41-50"
Coral Survival
Probability Chart
0.9
0.8
A
m
0.7
o
0.6
u
0.5
n
0.4
t
0.3
0.2
0.1
0
Theoretical
Observed
Temperat
Trial #
ure
Substrate Column4 Survival
Tolerable 2,3,4,5
1,2,3,4
4,5,6
Yes or No
1
5
4
5 Yes
2
5
2
4 Yes
3
6
6
5 No
4
5
2
6 Yes
5
3
2
6 Yes
6
5
1
4 Yes
7
2
3
6 Yes
8
5
2
5 Yes
9
3
4
4 Yes
10
2
4
5 Yes
11
2
2
4 Yes
12
5
3
6 No
13
6
1
5 No
14
2
3
1 Yes
15
4
4
4 Yes
16
5
4
4 Yes
17
4
3
4 Yes
18
3
2
6 Yes
Coral Survival Factors
 Water Temperature-
Abnormally high temperatures trigger physical, chemical, and biological
changes in the oceans that affect coral reefs and fisheries, both directly and
indirectly.
 Substrate (Depth)Corals require water depth where light intensity is at least 1-2% of surface
intensity.
 Wave ActionWave action can have significant effects on coral reef community structure
affecting not only species composition, but also the morphology of sessile
organisms. Wave action can also drastically alter benthic algal communities
by either enhancing algal growth by bringing in nutrient-rich water and
removing waste or reducing cyanobacteria and macro algal abundances by
the mechanical effects of waves on the algal community and substrate.
Standard Deviation for Sea Cigar
Measurements
 Definition:
Standard shows how much variation or dispersion
Size
exists from the average.
 Formula:
11
14
15
15
15
15
15
17
19
19
19
20
20
20
20
21
22
22
24
24
24
27
28
29
41
±6.24419731
Variance for Sea Cigar
Measurements
 Definition:
Two values that are used in statistics to describe how
far away your data are from the mean.
 Formula: σ² or s²= Σ (x̅– x)²/ n-1
11
14
15
15
15
15
15
17
19
19
19
20
20
20
20
21
22
22
24
24
24
27
28
29
41
38.99