Important! Mean: The average of a set of numbers. The females’ average size is larger than the...

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)

http://www.google.com/imgres?imgurl&imgrefurl=http://new-brunswick.net/new-brunswick/sharks/species/sharpnose.html&h=0&w=0&sz=1&tbnid=l-V2evLfQtZQlM&tbnh=190&tbnw=266&prev=/search?q=sharpnose+shark&tbm=isch&tbo=u&zoom=1&q=sharpnose%20shark&docid=fWeFKozY6y2euM&hl=en&ei=ZRK6UcnSIYnC9gSq84CwCg&ved=0CAEQsCU

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

http://www.google.com/url?sa=i&rct=j&q=&source=images&cd=&cad=rja&docid=fzhsb0CRMKdiYM&tbnid=NiddJ62Q--A8cM:&ved=0CAUQjRw&url=http://www.arkive.org/loggerhead-turtle/caretta-caretta/image-G86018.html&ei=Ig-6Uan7NIvS9gTC64FA&bvm=bv.47883778,d.dmQ&psig=AFQjCNH-GRfffRhYzOv_FXQDJRxVvLyIFA&ust=1371234419712614

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.

http://www.google.com/url?sa=i&rct=j&q=&source=images&cd=&cad=rja&docid=foQq39TtmREYpM&tbnid=BjyC6QfEf0P9UM:&ved=0CAUQjRw&url=https://www.recyclebank.com/live-green/can-you-recycle-bottle-caps&ei=pqDAUfniDYv09gTKo4DgBw&bvm=bv.47883778,d.eWU&psig=AFQjCNHWYB5R2KuUA712aiHZe9AkY8V67w&ust=1371664923536768

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

http://www.google.com/url?sa=i&rct=j&q=sea+cigars+mangrove&source=images&cd=&cad=rja&docid=1ACBwM8frWU2uM&tbnid=Q69Ewa--DV2kjM:&ved=0CAUQjRw&url=http://www.backyardnature.net/yucatan/mangrov2.htm&ei=xEPDUYylLYa08QTD94HYBg&psig=AFQjCNEiaYc3hrwdEF9Pqz6qCxTHS5TwfA&ust=1371837192491878

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

http://www.google.com/url?sa=i&rct=j&q=&source=images&cd=&cad=rja&docid=TzP_12oxDEnXnM&tbnid=rrQ0fUaD0c4MhM:&ved=0CAUQjRw&url=http://photography.nationalgeographic.com/photography/photos/underwater-landscapes/&ei=pd3JUb-nJ4a69gSV5oCQBg&bvm=bv.48293060,d.dmQ&psig=AFQjCNFdB5dhu7Qa_EjtF8JRp5nwJrAUSA&ust=1372270364922404

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.

http://www.google.com/url?sa=i&rct=j&q=variance%2Bformula%2Bexample%2Bproblems&source=images&cd=&cad=rja&docid=Z5-dIxY-J03KzM&tbnid=0nrM_cMveoWmLM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.business.latech.edu%2F~jcochran%2Fpst%2Fproblem_solving_techniques.htm&ei=yITMUZ_QM43S9gTXi4GgBw&psig=AFQjCNFYofmKAHbkcM5Qea9DM4jw1j3jHw&ust=1372443678985563

http://www.google.com/url?sa=i&rct=j&q=mangrove%2Bseeds&source=images&cd=&cad=rja&docid=B2vvi9XSus-G_M&tbnid=X08E0ncNVq57PM:&ved=0CAUQjRw&url=http%3A%2F%2Fseakayaking-thailand.com%2Fthailand-mangrove.htm&ei=xYXMUcKuAYjk9gTs6oCwCg&psig=AFQjCNEwBMddCo8zVAJUM2imz6QGYlA-bA&ust=1372444464524541

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

Important! Mean: The average of a set of numbers. The females’ average size is larger than the...

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