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by: Mario Borjas

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ENGR 201: WEEK 1 ENGR 201 - B

Mario Borjas
Drexel
GPA 3.93
Evaluation and Presentation of Experimental Data I
Dr. Roger Marino

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- Introduction to the course - Introduction to basic statistics concepts - Information on Descriptive Statistics
COURSE
Evaluation and Presentation of Experimental Data I
PROF.
Dr. Roger Marino
TYPE
Class Notes
PAGES
3
WORDS
KARMA
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1 review
"So much better than office hours. Needed something I could understand, and I got it. Will be turning back to StudySoup in the future"
Jack Keebler

Popular in General Engineering

This 3 page Class Notes was uploaded by Mario Borjas on Friday October 2, 2015. The Class Notes belongs to ENGR 201 - B at Drexel University taught by Dr. Roger Marino in Fall 2015. Since its upload, it has received 16 views. For similar materials see Evaluation and Presentation of Experimental Data I in General Engineering at Drexel University.

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Reviews for ENGR 201: WEEK 1

So much better than office hours. Needed something I could understand, and I got it. Will be turning back to StudySoup in the future

-Jack Keebler

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Date Created: 10/02/15
ENGR 201 Evaluation and Presentation of Experimental Data ENGR ZOl WEEKl Statistics and Probability Ronal Fischer father of Modern Statistics Populotion vs Somple Population contains all possible measurements or outcomes in question However it is not always possible to obtain Because of this samples are taken out from the population Samples are more practical in real world scenarios Good samples must be 0 Diverse nonbiased 0 Representative portion of the overall population Samples are analyzed and conclusions regarding the whole population are made extrapolation 0 Ex Used in Quality Control When testing not all materials are tested However a small number of materials are subject to test and a conclusion is made about all materials extrapolation Fitting Lines ond Curves Involves plotting data obtain A trend may be found in the plot Various methods are used to determine if a certain trend exists in plot An example is fitting a straight line ENGR 201 Evaluation and Presentation of Experimental Data Tupes oi Doto Discrete Continuous noluzing Dom Examples of the data analysis methods used Binary Analysis Data gives only two possible results Example Yes or no broke or unbroken new or old etc BIG QUESTIONS I How many samples are required I How is data to be analyzed I How do you determine to which of the two categories does the sample object belongs Deductive Reasoning 0 Logical true conclusions based on known data Example You are given two angles of a triangle You what the properties of a triangle and that the sum of the angles in a triangle is 180 degrees therefore you can conclude what the third angle is 0 Works by moving from more general knowledge to make specific conclusions ENGR 201 Evaluation and Presentation of Experimental Data Inductive Reasoning 0 Makes broad generalizations from specific observations that are considered probable but may not be accurate Example You know that almost every windstorm in this area comes from the north One day you see a big cloud of dust caused by a windstorm in the distance therefore you say a new windstorm is coming from the north 0 Works by moving from specific observations to broader generalizations Descriptive Statistics Lab this uueek uuiii make emphasis la this breach of statistics Branch of statistics that deals with the following Basic measures range maximum value minimum value sample size Measures of Central Tendency 0 Mean Arithmetic Average 0 Median Separates the higher half of data from the lower half 0 Mode Most repeated data in a set Ex 2 3 4 5 5 6 7 8 9 Mean 54 Median 5 number located equally spaced from both the right and left Mode 5 most repeated Measure of Spread 0 Standard Deviation Deviation from its mean value Large values means data is spread more far away from the mean Low values means data is clustered around the mean 0 Variance Square of the Standard Deviation Visualization o Histograms Independent of time and data is assigned in quotbinsquot Plots quotFrequency vs Bins 0 Line plot Dependent of time and trends in behavior Heights at Black Eherry 39Ii39ees Frequent Stock price EU 55 El 1395 EU 35 9 l i I Height feet DH 5395 Histogram Line Plot

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