Computers and Statistics Jack Lawhorn RiE Summer 2009

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# Computers and Statistics Jack Lawhorn RiE Summer 2009 - PowerPoint PPT Presentation

Computers and Statistics Jack Lawhorn RiE Summer 2009. Average Length of Sharpnose Sharks. Sharpnose Shark. Average Length. Male. Female. Gender. Chi² Test. The Chi Square test is used to see if there are any significant differences between groups of data samples.

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### Average Length of Sharpnose Sharks

SharpnoseShark

Average Length

Male

Female

Gender

Chi² Test

The Chi Square test is used to see if there are any significant differences between groups of data samples.

Coral Probability

Probability= the chance of an event occuring.

4 out of my __ coral polyps survived.

Standard Deviation &Variance

Variance= how close together a group of data is from the mean.

Standard Deviation= the square root of the variance.

Butterfly Pupation Project

Chi-square Value: 3.24 compared w/ 3.84 from Chi-square table at 1 DF.

Above: S= Survived///D= Died

Bellow: Overall Survival Rate 59.4%  There was no significant difference but it was so close that it would be worth it to do the same experiment with hundreds or even thousands of samples.