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Transcript of MalesFemales 920850 928932 935960 943960 950965 950972 954980 960980 962985 974995 9751000 9751000...
Statistics Class
Male
Female
920 930 940 950 960 970 980 990 1000
Mean Length Atlantic Sharp-Nose Shark
LENGHT IN MM
Gender of sharks
Males Females920 850928 932935 960943 960950 965950 972954 980960 980962 985974 995975 1000975 1000
10091010101010101020102510251028103010381043105410601160
The sharp –nosed shark consumes shrimp, mollusks and small fishes.
blue yellow green red orange
0
5
10
15
20
25
Survived
# hatchlings
Sea Turtle DataBeach Site F
Color Survived # hatchlingsblue 13 25yellow 25 25green 18 25red 3 25orange 4 25
Sea Turtles Sea turtles often drown when caught in fishing gear: both nets and loglines. Coastal development can destroy important nesting sites, impact coral reefs, and artificial light from houses and other buildings distracts hatchlings away from the ocean.
21%
4%
9%
14%14%6%
18%
13%1%
Percentage of bottle caps found on the beach
red orange yellow blue green purple black white clear other
Color of bottle cap
# of caps
Percentage
red 18 21orange 3 4yellow 8 9blue 12 14green 12 14purpleblack 5 60white 15 18clear 11 14other 1 1
The “garbage patches” are areas of marine debris concentration (due to oceanographic features)in the North Pacific Ocean. The term “garbage patches”is a misnomer. There is no island of trash forming in the middle of the ocean nor a blanket of trash that can be seen with satellite or aerial photographs.
"1-5" "6-10" "11-15" "16-20 "21-25" "26-30" "31-35"0
2
4
6
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10
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14
Frequency Distribution of Sea Cigars by Size(cm)
Size Class (cm)
Fre
quency
Size Class Frequency"1-5" 0"6-10" 1"11-15" 4"16-20 13"21-25" 4"26-30" 2"31-35" 1
theoreticalobserved
0
0.2
0.4
0.6
Probability of Observed and Theoretical Survival
Survivalp
rob
ab
ilit
y
Water temp. Depth
Wave action survived
1 3 1 4yes2 1 1 1no3 4 2 4yes4 2 3 2no5 4 1 4yes6 3 2 4yes7 6 5 5no8 1 5 5no9 6 3 3no
10 3 2 5yes11 2 1 6yes12 2 3 5yes13 1 4 6no14 6 4 5no15 6 6 1no16 3 3 2no17 3 2 5yes18 3 3 6yes
theoretical observed0.22 0.5
Coral reefs are found all around the world in tropical and subtropical oceans. They are usually found in shallow areas at a depth of less than 150 feet. However, some coral reefs extend even deeper, up to about 450 feet deep.
Variance
𝜎 2=∑¿ ¿
The squared version of the standard deviation
Standard deviation
Shows how much variation or dispersion exists from the average
𝜎=√𝑉𝑎𝑟𝑖𝑎𝑛𝑐𝑒
1 2 3 4 5 6 7 8 9 10111213141516171819202122230
1
2
3
4
5
Actual distribution of sea cigars
Size(cm)
Fre
quency
4 6 8 10 12 14 16 18 20 22 240
2
4
6
8
10
12
TDC
Size(cm)
Fre
quency
*TDC: Theoretical picture of distribution based upon random sampling. Serves as a standard with the actual distributions can be compared.
T-Test
𝑇=¿ ¿
A t-test is any statistical hypothesis test in which the test statistic follows a Student's t distribution if the null hypothesis is supported.