lab 2 Scientific method metric system sp 2015.ppt

lab 2 Scientific method metric system sp 2015.ppt - LAB 2...

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LAB 2 SCIENTIFIC METHOD & METRIC SYSTEM
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For lesson: RCC Library : Films on Demand Scientific Method – 7 segments (about 20 minutes) To find it if the link does not work: RCC Home Page; A-Z ; Library; Database List; Films on Demand; In Search Box type “ Scientific Method”. Show all 7 segments. For student review at home: Youtube: 4 min. song MEDIA Scientific Method . films.com/PortalPlaylists.aspx?aid=7942&xtid=8428
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PER CENT % for 100” It means how many parts per 100 parts. If a student has 85 questions correct out of a total of 100 questions, he has 85% correct. If a student has 25 questions correct out of a total of 100 questions, he has 25% correct.
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To convert a decimal to a per cent multiply by 100 or move the decimal point two places to the right. Change the following to a %. 48 = ___________. 0.65 = _________ 1.6 = ____________ 4,800.0 65.0 160.0 To change a percent to a decimal, divide by 100 or move the decimal point two places to the left. Change the percent to decimals: 300% = __________ 0.05% = _________ 25% = _________ 3.0 0.0005 0.25 DATA REPORT & ANALYSIS
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RANGE The difference between the highest and the lowest numbers. Example: The range in height of all the boys was 5.5 inches. Calculate the range of grades on this set of test scores. 65, 85, 82, 90, 75, 70, 68, 78, 95, 88, 83, 73, 71, 80, 79 Highest grade = 95 Lowest grade = 65 Range = 30
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MEAN (Average) The average is obtained by adding all the numbers and dividing the sum by the number of items. 65, 85, 82, 90, 75, 70, 68, 78, 95, 88, 83, 73, 71, 80, 79 What is the average of these test scores? 78.8
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REPORTING CONCLUSIONS OF A STUDY Does the evidence support or disprove the hypothesis? Is the evidence inconclusive? What further experiments need to be done? Was something unexpected learned?
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When an experiment supports the hypothesis, the experiment must be repeated by the same group. The next step is validation of the hypothesis by many othe r investigators repeating the experiment .
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