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Statistics

ch 4 statistics

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Classical Probability: The compliment of (E) = is the set of all numbers not included in the outcomes of event E (compliment of rolling a 4 on a die is 1,2,3,5,6) Empirical Probability: (50 people surveyed with 21 with blood type o, what?s the probability that someone has blood type o? 21/50 subjective probability: uses a probability based on and educated guess or estimate (weather forecasting, sports predictions) -two events are mutually exclusive when they cannot occur at the same time Conditional Probability: The probability that B will occur given that A has occurred already. (probability of not finding a spot .20 probability of getting a ticket .06) Independent events: the fact that A occurring does not affect the probability of B occurring.

AP Statistics Practice Test

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Statistical hypothesis testing
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Experimental Design

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Chapter 2 Experimental Design Definitions: 1) Observational study - observe outcomes without imposing any treatment 2) Experiment - actively impose some treatment in order to observe the response I?ve developed a new rabbit food, Hippity Hop. Rabbit Food Makes fur soft & shiny! Increases energy! 100% of daily vitamins & essential oils! Can I just make these claims? What must I do to make these claims? Who (what) should I test this on? What do I test? NO Do an experiment Rabbits The type of food 3)Experimental unit ? the single individual (person, animal, plant, etc.) to which the different treatments are assigned 4) Factor ? is the explanatory variable 5) Level ? a specific value for the factor 6) Response variable ? what you measure

Statistics-Chi-squared in APES

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Environmental Science
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Twins

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Psychology
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Identical twins are nature’s own human clones, only they share the same conception, uterus and birthday. Twins can help us understand nature and nurture through observing separated identical twins or just through their behavior in general. “Curiously twinning rates vary by race. The rate among Caucasians is roughly twice that of Asians and half that of Africans … In Western countries most twins are fraternal, and fraternal twins are increasing with the use of fertility drugs.” (Meyers 97) Fraternal twins are just like siblings that share a uterus and a birthday.

Introduction to Statistics 3rd Edition; Encapsulation of Notes Chapter 1.1-1.3

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