Gender Differences. Males are like Waffles? Females and Spaghetti?
Important! Mean: The average of a set of numbers. The females’ average size is larger than the...
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STATISTICS By: Jiyansh Agarwal
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Important! Don’t litter at the beach so turtle hatchlings don’t die!
Transcript of Important! Mean: The average of a set of numbers. The females’ average size is larger than the...
STATISTICSBy: Jiyansh Agarwal
Important!
Mean: The average of a
set of numbers.
The females’ average size
is larger than the males in
this sample.
Sharp-Nose Shark
Males Females920930940950960970980990
10001010
Mean Length of Sharp-Nose Sharks
Gender
Leng
th o
f Sh
ark-
Nos
e Sh
arks
(m
m)
Turtle Hatchlings
Important!
Don’t litter at the beach so
turtle hatchlings don’t die!
Blue Yellow Green Red Orange
0
5
10
15
20
25
SurvivedNumber of Hatchlings
Number of Turtles Surviving at Beach Site D
SurvivedNumber of Hatchlings
Axis ColorTitle
Num
ber
of T
urtle
s
Red 14% Orange
5%
Yellow 12%
Blue14%
Green 12%
Black10%
White22%
Clear10%
Bottle Cap Percentages
Bottle Caps
Important!
Percentage: A part per
100. The percentages in the pie
graph show the
percentages of bottle cap
colors.
Frequency Distribution of Sea Cigars By Size
"1—5" "6—10" "11—15" "16—20" "21—25" "26—30"0123456789
10
Frequency Distribution of Sea Cigars By Size
Size Intervals
Num
ber
of S
ea C
igar
s
Size Intervals (cm) Number of Sea Cigars"1—5" 0"6—10" 2"11—15" 4"16—20" 10"21—25" 7"26—30" 2
Theoretical Probability Observed Probabiltiy0
0.050.1
0.150.2
0.250.3
Probability Of Coral Survival
Probabilty Type
Prob
abilt
y
TimeWater Temperature
Substrate/Depth
Wave Action
Survived
1 2 2 3 No2 1 4 6 No3 6 1 1 No4 5 4 3 No5 2 3 6 Yes6 4 3 2 No7 1 6 4 No8 2 2 4 Yes9 2 2 2 No
10 5 1 3 No11 1 5 6 No12 5 1 1 No13 5 3 4 Yes14 4 6 6 No15 3 1 3 No16 4 6 6 No17 4 2 5 Yes18 5 3 6 Yes
Coral Survival
Important!
Probability: The chance
that something will
happen.
The factor that affected
coral survival the most
was wave action.
Theoretical Probability
Observed Probabiltiy
0.22 0.27
Variance
Lengths6.77.37.57.59.49.8
11.212.513.1
17
Variance
10.7756or 10.8
σ2 = ∑(X – X)2
n - 1
Variance is the difference between a number and the mean of the number set the number is part of. The formula for variance is:Below is an example of variance.
Standard Deviation
Lengths6.77.37.57.59.49.8
11.212.513.1
17
Standard Deviation 3.28261or 3.3
Standard Deviation is a measure of dispersion in a frequency distribution.
The formula for variance is:Below is an example of variance.
σ2 = ∑(X – X)2
n - 1
