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Statistics

Statistics. Natalia Rodriguez Research in Ecology. The Atlantic Sharp Nosed Shark. The Mean is the average. To find the mean you add up all the numbers and divide it by the total amount of numbers. Female sharks are much larger than males. I Sea Turtles!.

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Statistics

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  1. Statistics Natalia Rodriguez Research in Ecology

  2. The Atlantic Sharp Nosed Shark The Mean is the average. To find the mean you add up all the numbers and divide it by the total amount of numbers. Female sharks are much larger than males.

  3. I Sea Turtles! Very few sea turtles make it to the ocean each year. They face many dangers such as pollution, preadators (racoons, dogs, gulls…), misleading lights and poachers.

  4. BottleCaps Bottlecaps are a big problem for the ocean. Many animals eat them or make homes in them. Bottle caps are one of the most commonly found beach trash along with plastic bags. Percentage is the amount in each hundred like a fraction 10/100.

  5. Sea Cigars Red mangroves are more important than people think. Their prop roots provide a small ecosystem that protects small fish and other marine animals from predators. Animals that live here are snowy egret, white ibis, brown pelican, cormorants, mangrove cuckoos, herons, manatees, monkeys, turtles, red-tailed hawks, sea turtles, American alligators and crocodiles, and mangrove tree crabs…

  6. The Probability of Coral Survival Probability is a way to measure the chances that something will occur in relation to the possible alternatives. To survive a coral needs warm water, shallow water, and rough waves. The color from the coral comes from little algae that lives inside the coral. When the algae dies due to global warming the coral kicks it out and loses its color. Wave action killed the coral the most.

  7. Variance • Variance is a way to show how far away your data is from the mean. • Variance is calculated with this formula: ∑= sum X= the mean of dataX= each data value n=the number of values • Variance is also symbolized by the Greek letter sigma squared δ2

  8. Standard Deviation • Standard Deviation (δ) describes how spread out the data are. • Standard deviation is the square root of the variance. δ= • One standard deviation is considered the numerical distance away from the mean in the positive or negative direction. • We say plus or minus some number away from the mean.

  9. Distribution of Sea Cigars A Theoretical Distribution Curve (TDC) is an ideal picture of a distribution based upon random sampling.

  10. TTestWith Caterpillars T-Tests are used to test if there is a significant difference between the data. It’s calculated with this formula: s of samples 1 and 2 = pooled variance = number of objects in each group P IF the calculated t-statistic is larger than the one from the table, the null hypothesis is rejected. IF the calculated t-statistic is less than the one from the table you fail to reject the null hypothesis.

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