PPT-You will be given a data set (on a computer), a hypothesis,

You will be asked the following questions word for word Which statistical test should you use 2 points What is the pvalue 5 points Do the data support the prediction yes or no 3 points . Hypothesis. testing. The process of making judgments about a large group (population) on the basis of a small subset of that group (sample) is known as statistical inference.. Hypothesis testing, one of two fields in statistical inference, allows us to objectively assess the probability that statements about a population are true. . . Using the data given, develop . one reasonable. , ecologically meaningful hypothesis and prediction. . Run a statistical test to see if your prediction is upheld. . Produce an easy-to-interpret graph demonstrating your results. . ©2013 Michael J. Rosenfeld. Draft date: 1/14/2013. The sample frame, or sample universe, is the data that our sample is drawn from. In the case of the March, 2000 CPS, the sample universe includes all people residing in the US in March, 2000, who were not living in institutional settings. This sample frame has N members.. +. +. +. +. +. +. +. +. +. -. -. -. -. -. -. -. -. -. -. -. -. Example set X. Can Inductive Learning Work?. Hypothesis space H. Training set . D. Inductive. hypothesis . h. size . m. size |H|. h. :. hypothesis that . +. Probability. Seminar 6. A difficult mock question for mid-term. Plot . the following graph. People . who use Facebook only (but not Twitter) are generally happier than those who use Twitter only (but not Facebook). This . How does a hypothesis begin?. What do you do with it?. How do you make one?. How does a hypothesis begin?. Scientists make lots of observations. This leads them to form scientific questions about what they have observed. Each scientist creates an explanation – or hypothesis – that he or she thinks will answer the question.. Dr. Anshul Singh Thapa. There are number of consideration to keep in mind when constructing hypothesis.. Ho - this hypothesis holds that if the data deviate from the norm in any way, that deviation is due strictly to chance.. Alternative hypothesis. Ha - the data show something important.. Doing decision = accept/reject Ho (the decision centers around null hypothesis). Chong Ho Yu (Alex). Ford's Model T in Statistics. Most statistical procedures that we still use today were invented in the late 19. th. century or early 20. th. century.. The t-test was introduced by William Gosset in 1908.. Hypothesis Testing. A statement has been made. We must decide whether to . b. elieve it (or not). Our belief decision must ultimately stand on three legs:. What does our general background knowledge and experience tell us (for example, what is the reputation of the speaker)?. Q. uestion. R. andom guess. Observation. Experiment. Your mom. A . hypothesis is:. A . tentative explanation . for an observation or a scientific problem that can be tested by further investigation. . Q. uestion. R. andom guess. Observation. Experiment. Your mom. A . hypothesis is:. A . tentative explanation . for an observation or a scientific problem that can be tested by further investigation. . Sample. , shape, location, and spread. Sample = make sure it's random, handle missing data (mcar, mar, nmar), imputation . methods. NMAR!. . Shape = Is the data skewed, normal, or flat? If normal then we can use statistical analysis for normal . Score them. Assemble them into a composite explanation. Hypothesis Assembly Algorithm. Look for essential hypotheses. a hypothesis that is the only way to explain some data. Include/propagate/remove (see the next slide) and repeat from top.