Statistics

By Miranda Fernandez Research in Ecology

Sharp-Nose Sharks

female

male

920 930 940 950 960 970 980 990 1000

Average Length of Sharp-Nose Sharks

Length in Millimeters

Sea turtles

Blue

Yellow

Green

Red

Orange

0 5 10 15 20 25

Percentage of Surviving Turtles

#hatchlingsSurvived

Number of Hatchlings

Colo

rs

Bottle Caps

Percentage of bottle caps found by color

redorangeyellowbluegreenblackwhiteclear

Red Mangrove's

"1-5" "6-10" "11-15" "16-20" "21-25" "26-30" "31-35" "36-40" "41-45"0

1

2

3

4

5

6

7

8

9

10

0 0

6 6

10

3

0 01

Frequency Distribution of sea cigars by size

Frequency

Size of sea cigars

Am

ount

of

sea c

igars

size class Frequency "1-5" 0"6-10" 0"11-15" 6"16-20" 6"21-25" 10"26-30" 3"31-35" 0"36-40" 0"41-45" 1

Coral Survival

Theoretical Observed0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5 Probability Rate of Surviving Corals

Series1

Num

bers

counte

d b

y

Type of Coral

What is Probability? a measure or estimate of the degree of confidence one may have in the occurrence of an event

Factors that effect Survival1.Water Temperature2. Depth3.Wave action

Variance

What is

Variance?

Variance is the amount different from the mean.

Variance Table

6 .77 .37 .57 .59 .49 .8

11 .212 .513 .1

1710 .775 55 556

V a r i a n c e3 .2 826 14 134

S .D

Distribution of sea cigars

1 3 5 7 9 11 13 15 17 19 21 230

0.5

1

1.5

2

2.5

3

3.5

4

Distribution of Sea Cigars

Series1

Size in centimeters

freq

uen

cy

Size Frequency7 29 2

10 111 112 313 314 215 416 317 218 123 1

4 6 8 10 12 14 16 18 20 22 240

0.5

1

1.5

2

2.5

3

Theoretical Distribution of sea cigars

Length (cm)

Freq

uenc

y

T. TestControl Treatment

14 1413 1313 1513 1513 1513 14

14141515

0.000545T-Test Formula above

Pooled variance formula below