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Research in Ecology Maya Damski. MalesFemales 920840 928850 935932 943960 950960 950965 954972 960980 962980 974985 975995 9751000 9521000 9501009 1010.

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Presentation on theme: "Research in Ecology Maya Damski. MalesFemales 920840 928850 935932 943960 950960 950965 954972 960980 962980 974985 975995 9751000 9521000 9501009 1010."— Presentation transcript:

1 Research in Ecology Maya Damski

2 MalesFemales 920840 928850 935932 943960 950960 950965 954972 960980 962980 974985 975995 9751000 9521000 9501009 1010 1020 1025 1028 1030 1038 1043 1054 1060 1160 Mean: 950998 Median: 9521009 Mode: 950, 9751010

3 ColorSurvived Hatchlings Blue1325 Yellow25 Green1825 Red325 Orange425

4 Bottle caps are not only the garbage that is washed up on beaches. Some examples include plastic bags and lumber. The litter affects animals, and sometimes kills them.

5 Size # of Sea (in cm)Cigars "1-5"0 "6-10"3 "11-15"4 "16-20"12 "21-25"5 "26-30"1

6

7

8 Standard Deviation also shows how spread out the data are.

9 SizeFrequency 60.3 80.8 101.5 122.2 142.5 162.2 181.5 200.8 220.3 Theoretical Distribution Curve (TDC) is an ideal picture of a distribution based upon random sampling.

10 ControlTreatment 14 13 15 1315 1315 1314 15 P= 0.000545057 p The t-test equation tests if there is a significant difference between the means of two independent samples. The t-test is calculated by the t- statistic. The formula for the t – statistic is on the bottom of this slide. Key X 1 =mean of the first group X 2 =mean of the second group n 1 =number of _ in the first group n 2 =number of _ in the second group

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