Final Exam

Question Answer Test of Statistical Significance Helps you decide whether an observed relationship b/w an IV and a DV exists in the population or whether it could have happened by chance. Null Hypothesis (H0) States there is no relationship b/w the IV (X) and the DV (Y) in a population. Any relationship that may exist …

Multiple Regression Special Topics

Question Answer Statistic used to measure the proportion of variance accounted for by the nominal variable R squared Statistic used to represent the relationship between the coded aspect of the nominal variable and Y ryi Statistic used to represent the relationship between the coded aspect of the nominal variable and the reference group Pri and …

Multiple Regresstion – P264B

Question Answer Regression partitions y into what two components? SST = SSE + SSR SS Total (total variation in y) = SS Regression + SS Error What is the interpretation of the slope (b1) coefficient? For a 1-unit increase in x, y increases by (b) units. Unstandardized regression coefficient Slope (b) What are standardized regression …

Formula Quiz 1

Question Answer individual an object described by a set of data variable a characteristic of an individual quantitative variable a variable that takes on a numerical value that can be measured quantitative data values of quantitative variables categorical/qualitative variable a variable that places an individual into a category distribution indicates what values a variable takes …

Statistical Methods Flashcards 1

Question Answer range length of the smallest interval which contains all the data interquartile range (IQR) difference between the third and first quartiles Variance amount of variation of all the scores for a variable s(square)=sum (x-mean(x))(square)/N Standard Deviation square root of variance Normal Distribution two-thirds of cases within one standard deviation of the mean two-thirds …

third exam with ellis. April 2011

Question Answer A Type 1 error is the result of A research article reports results of a study using a test for dependent means as " (38)=3.11, <.01." This tells you: When conducting a test for independent means, a typical research hypothesis might be: How do you set up a hypothesis testing problem? Other names …

CH 1

Question Answer Statistics Is the science of data Two branches of statistics? Descriptive statistics,Inferential statistics Descriptive Statistics Consists of the collection, organization, summarization, and presentation of data Inferential Statistics Consists of generalizing from samples to populations by.. Performing estimations and hypothesis tests,Determining relationships among variables,Making predictions, Uses probability( the chance of an event occurring) Population …

Analysis of Variance

Question Answer Inflation of Type I Error Each t-test has a type I error of alpha, however over a series of multiple t-tests the overall type I error does not stay at alpha but grows w/ each new comparison. Analysis of Variance (ANOVA) Compares multiple pop. means that avoids the inflation of type I error …

Test 2 Notes

Question Answer What is a Statistical Inference? A procedure by which we use information from a sample, that is drawn from a population, to reach a conclusion about the population. What is Estimation? Estimation uses sample data to calculate a statistic that is an approximation of the parameter of the population from which the sample …

vocab review

Question Answer science of collecting, organizing, summarizing, analyzing and making inferences from data statistics includes collection, organization, summarizing, graphical displays descriptive statistics includes making inferences, hypothesis testing, determining relationships, making predictions inferential statistics the values or measurements that variables describing an event can assume data values that are numeric quantitative data data values that can …