StatisticsStatistics

by Ian Rodriguez by Ian Rodriguez

Mean Size of Atlantic Sharp-Mean Size of Atlantic Sharp-nose Sharksnose Sharks

920 940 960 980 1000 1020

Male

Female

Length in Millimeters

Gen

der o

f Sha

rks

Mean Length of Sharp-nose Sharks

Male

Female

Males Females920 840928 850935 932943 960950 960950 965954 972960 980962 980974 985975 995975 1000

10001009

952.1667 101010101010

952 102010251025

950 & 975 1028103010381043105410601160

997.8148

1009

1010

Percent of Turtle Survival Percent of Turtle Survival HI !!!!

ColorSurvived # of Hatchlings

Blue

13

25

Yellow

25

25

Green

18

25

Red

3

25

Orange

4

25

Bottle Cap CountBottle Cap CountColor Number of Caps Red 17

Orange 5Yellow 7Blue 13

Green 10Black 7White 12Clear 12

Total 82

Coral Survival Coral Survival

Frequency Distribution of Frequency Distribution of Sea Cigars by SizeSea Cigars by Size

Size Frequency1 02 03 04 05 06 07 28 09 210 111 112 313 214 215 416 317 218 119 020 021 023 124 025 0

VarianceVariance

VariancVariancee - - a measure of how far a set of numbers is spread outa measure of how far a set of numbers is spread out

Formula for Variance =Formula for Variance =

Data Points6.77.37.57.59.49.811.212.513.117

Variance 10.8

Standard Deviation Standard Deviation

Data Points6.77.37.57.59.49.811.212.513.117

Variance 10.8

Standard DeviationA quantity calculated to indicate the extent of

deviation for a group as a whole.

Sea Cigar DistributionSea Cigar Distribution

Theoretical Distribution Curve - ideal picture of a distribution based upon random sampling

Size Frequency6 0.38 0.8

10 1.512 2.214 2.516 2.218 1.520 0.822 0.3

T-TestT-Test

Control Treatment 14 1413 1313 1513 1513 1513 14

14141515

If p is less than 0.05 then there is a significant difference between your two groups.

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