Statistics Notes STA 215
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This 1 page Class Notes was uploaded by Angela Meador on Friday September 9, 2016. The Class Notes belongs to STA 215 at Grand Valley State University taught by Robert H. Pearson in Fall 2016. Since its upload, it has received 3 views. For similar materials see Introductory Applied Statistics in Statistics at Grand Valley State University.
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Date Created: 09/09/16
Important Terms Observational Study Data gathered by only witnessing individuals without guiding or stating an input on them. Designed Experiment Data gathered by an examiner on individuals then runs trials each to test one or more variables. Cofounding Variables existing variables within the student that affect the response Randomization randomly assigned themes to experiments Theoretical Method Divide the number of results in the experiment taken by total number results Empirical Method Calculating the relative frequency Relative Frequency X/n X number of successes n number of results Response and Explanatory Variables X= Response Variable = dependent Y= Explanatory Variable Independent Goal X is what causes the change in Y Probability independent and identical trials Rules 1. Outcome of probability A is between zero and one 2. Collected possible results in random has a probability of one 3. Two experiments A and B have NOTHING in common Complement Rule NOT getting the results of A Pr(A^C)= 1Pr(A) Conditional Probability The probability of A happening knowing that B has previously appeared. Pr(A/B) Independence A and B are independents Pr(A/B)= Pr(A) Pr(B/A)= Pr(B)
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