Bio 201 Introduction to Biology 1, Section 53
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Lab Report #1: Introduction to Summary StatisticsElizabeth HegedusBIO 201 Introduction to Biology 1, Section 53September 18, 2012Courtney Brennan1.) a.) 2, 4, 5, 6, 7, 12 2+4+5+6+7+12=36 36/6=6 5+6=11 11/2=5.5 Mean=6; Median= 5.5b.) 2, 4, 5, 7, 8, 12, 26 2+4+5+7+8+12+26=64 64/7=9.14 median=middle number Mean=9.14; Median=7c.) 113, 124, 124, 132, 146, 151, 170 113+124+124+132+146+151+170=960 960/7=137.14 median=middle number Mean=137.14; Median=132d.) 1, 2, 10, 11, 13, 19 1+2+10+11+13+19=56 56/6=9.333333… 10+11=2121/2=10.5 Mean=9.33333…; Median=10.52.) a.) mean=6 1-6=-5 3-6=-3 5-6=-1 9-6=3 12-6=6 (-5)^2 =25 (-3)^2=9 (-1)^2=1 3^2=9 6^2=36 25+9+1+9+36=80 80/5-1= 80/4= 20 square root of 20= 4.47 Variance=20; standard deviation=4.47 b.) mean=73 76-73=3 72-73=-1 65-73=-8 70-73=-3 82-73=9 squares of all values = 9, 1, 64, 9, and 81. 9+1+64+9+81=164 164/5-1= 164/4= 41 square root of 41= 6.40 Variance=41; standard deviation=6.40 c.) mean=12 4-12=-8 8-12=-4 12-12=0 16-12=4 20-12=8 squares of all values = 64, 16, 0, 16, and 64. 64+16+0+16+64=160 160/5-1= 160/4= 40 square root of 40= 6.32 Variance=40; standard deviation=6.323.) a.) 2, 4, 6,10, 14, 24, 25, 25, 28, 50, 70, 71, 82 Median=25 Median of lower half= 8Median of upper half= 60 60-8 = IQR=52 b.) 113, 124, 124, 132, 146, 151, 170 Median=132 Median of lower half= 124Median of upper half= 151 151-124 =IQR=27
Essay About Median Of Lower Half And Middle Number Mean
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