Categorial variables - Study guides, Class notes & Summaries

BANA 2372 FINAL EXAM QUESTIONS AND ANSWERS ALL CORRECT statistical interference - Answer-The process of using data obtained from a sample to make estimates or test hypotheses about the characteristics of a population. -exp: In a sample of 800 students in a university, 160, or 20%are Business majors. the school reported "20% of all students at the university are Business majors". Variance - Answer-The descriptive measure NOT measured in the same units as the original data Excel's...

Chapter 1 - Answer-Data & Statistics Statistics - Answer-The art and science of collecting, analyzing, presenting, and interpreting data. statistics refers to - Answer-numerical facts such as averages, medians, percentages, and maximums that help us understand a variety of business and economic situations. Data - Answer-The facts and figures collected, analyzed, and summarized for presentation and interpretation. Data Set - Answer-All the data collected in a particular study. Elem...

The 5 steps of the statistical process are Design the study, Collect the data, Describe the data, Make inferences, Take action. Categorial variable data that can be placed into groups on the basis of some qualitative property. quantitative variable a characteristic that can be measured numerically observational study research that gathers data in a real-world setting without intentionally manipulating any variable experimental study A study in which the researcher manipulates one of th...

what is bias? - error that is built into the study causes the results to be different from the truth (overestimation or underestimation of the association between exposure and outcome) where is the best place to prevent bias during a study? - the design stage (before you even look for results) name the four type of bias common in cross-sectional studies - selection bias interpretation bias recall bias non-response bias name the common types of bias in case-control studies? - selection b...

measurement - Correct Answer a systematic way of assigning numbers/ names to observation how do we measure variables - Correct Answer operational definitions a scale or type of measurements operational definition - Correct Answer -self report: own thoughts, feelings, and actions -observational: observing people's behavior in the environment in which it typically occur -physiological: measure people's characteristics like intelligence or personality a scale of measurement is based ...

Objective of Linear Discriminant Analysis - - Predict group membership for a number of subjects from a set of predictor variables - The criterion (grouping) variable is the object of classification. Always a categorial variable - Constructs one or more discriminant equations such that different groups differ as much as possible Number of discriminant functions - min(number of groups -1, p) p = predictor variables Determine discriminant weights by... - ... having a training set...

PSYC 350 Study Guide Exam| Question & Correct Answer (Verified) Set of Correlations - CORRECT ANSWER-With a group of variables, which would be most correlated 2xk Chi-square - CORRECT ANSWER-If you have a 2 categorial qualitative variable (gender) and a k categorical qualitative variable (3 or more of something) k-WG ANOVA - CORRECT ANSWER-Repeated measures; same group is tested 3 or more time

The prediction intervals need to be corrected for simultaneous inference when multiple predictions are made jointly. - ANSWER- The estimated versus predicted regression line for a given x* - ANSWER- If the confidence interval for a regression coefficient contains the value zero, we interpret that the regression coefficient is definitely equal to zero. - ANSWER-False The larger the coefficient of determination or R-squared, the higher the variability explained by the simple linear regres...

Unit 2 Notes AP STATISTICS FULL REVIEW prep for AP exam. Two-pager summary divided into sub-units. Space for individual note-taking on the left-hand side (Cornell notes).

ONE MASSIVE STUDY GUIDE 40 HOUR RBT EXAM Behavior - answerAny human action that can be observed and measured. Subjective vs Objective? - answerBe descriptive; avoid being derisive! Subjective = Emotional + Judgmental Objective = Observable + Measurable Two elements of observability: - answer1. can be heard seen touched smelled tasted 2. can be heard seen touched smelled tasted by bystanders as well Measurable - answercount it time it measure it weight it score it. You rarely measure to ...