Download - Statistics
Sharp-nosed Sharks
Male
Female
920 930 940 950 960 970 980 990 1000 1010
952
998
Mean Length of Sharpnosed Shark
Length in millimeters
Gen
der o
f Sh
arks
Sea Turtles
BlueYellow
GreenRed
Orange
0
5
10
15
20
25
Survived
#Hachlings
% of Surviving Turtles in Beach Site A
Survived#Hachlings
Player Color
# of
turt
les
Bottle Caps
21%
4%
9%
14%14%
6%
18%
13% 1%
% of Caps Bottle Caps Washed Up on the Beach
RedOrangeYellowBlueGreenBlackWhiteClearOther
"1-5" "6-10" "11-15" "16-20" "21-25" "26-30"0
1
2
3
4
5
6
7
8
9
Frequency Distribution of Sea Cigars
Size Interval of Sea Cigar in cm.
Amou
nt o
f Man
grov
e Se
ed P
er G
roup
Sea Cigars
Size Class Frequency"1-5" 0"6-10" 1"11-15" 9"16-20" 5"21-25" 7"26-30" 3
Will the Coral Survive
Theoretical
Observed
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
Probability of Coral Survival
What the Probability Was
Trial# Water Temp. Depth Wave Action1 1 2 62 5 4 13 6 4 14 1 6 25 4 6 66 5 2 57 3 3 48 4 4 49 2 3 5
10 1 2 611 3 1 312 3 2 613 6 3 114 2 2 315 4 4 516 5 4 617 1 3 418 4 4 4
Probability is a way to measure the chances that something will occur in relations to the possible alternative
The factors that affect corals survival are the temperature of the water, the water depth, how active the waves are.
Variance σ2
9131314141515151515161718182021212223232425262830
28.3Variance
The variance (s2) is calculated as:
Variance is a value that is used in Statistics to describe how far away your data sets are from the mean.
∑=sumX=mean of the valuen=number of numberss2= Variance X=each data value
Standard Deviation σ
9131314141515151515161718182021212223232425262830
5.3Slandered Deviation
Standard Deviation describes how spread out the data are.
∑=sumX=mean of the valuen=number of numbersσ= Standard DeviationX=each data value
Theoretical Distribution(TDC)• It is an ideal picture of a
distribution based upon a sampling
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 250
0.5
1
1.5
2
2.5
3
3.5
4
Actual Distribution of 25 Sea Cigars
Length of Sea Cigars in cm.
Freq
uenc
y
4 6 8 10 12 14 16 18 20 22 240
0.5
1
1.5
2
2.5
3
TDC of Sea Cigars by Length
Length of Sea Cigars ijn cm.
Freq
uenc
y
T-Test Equation
The P value has to be less than 0.05 to reject the null