Biost - Study guides, Class notes & Summaries

This document contains notes from the statistic lectures with clear examples and 'how to' for SPSS. This will help you for both the exam and assignment.

Sullivan Essentials of Biostatistics in Public Health 3rd edition Test Bank, Answered-A subset of the population of interest is often referred to by what statistical term? A sample of individuals A subculture of individuals A class of individuals A minority group The measure of uncertainty in a biostatistician's calculation of a particular outcome that may result from using a subset of the population to estimate the actual likelihood of the event occurring in the population as a whole is r...

COMLEX Level 2 Biostats + Ethics Questions and Answers 100% Pass ___ bias is defined as factors unrelated to the aim of the study distinguish the subjects from the rest of the population so that results are not generalizable. Sampling ___ bias is information gathered at an inappropriate time in a way that distorts the conclusions late-look ___ bias is knowledge of the presence of the disorder alters recall in subjects. recall ___ bias is when certain factors affect the final enrol...

Biostat Exam 1 Questions & Answers 2024/2025 In an experimental study where there are three levels of a treatment (usual care, education, education + social support) and you want to determine if the means across the 3 treatments are statistically different, what statistical procedure is best? - ANSWERS1-way ANOVA A sample of 80 children with chronic ear infections were treated with 1 of 4 drugs. After 3 months of treatment, parent satisfaction was measured across the 4 groups. The calcul...

BIOSTAT EXAM 2 QUESTIONS & ANSWERS 2024/2025 the mathematical foundation upon which biostatistics is built - ANSWERSProbability To understand why we can trust random samples and randomized comparative experiments, we must look at _____________ - ANSWERSchance behavior __________________ is unpredictable in the short run but has a regular and predictable pattern in the long run - ANSWERSchance behavior a phenomenon is called __________ if individual outcomes are uncertain but there...

Biostat Exam 3 Questions & Answers 2024/2025 B - ANSWERSHow can research be classified? A) simple or complicated B) descriptive and analytical C) short or long D) none of the above B - ANSWERSA qualitative study is an example of analytical type of research A) true B) false A - ANSWERSAll are examples of qualitative studies EXCEPT A) animal experiment B) focus group C) interview D) observation A - ANSWERSthe dependent variable is the outcome of interest A) true B...

UTA BIOL 2300 Biostats Final Review Rated A+ Frequentist school of statistics - objective probabilities with frequency interpretation. - Prior knowledge is not incorporated. - Repeatable random events - probabilities aren't attached to hypotheses or fixed values Ex: flipping coin Bayesian school of statistics - subjective probabilities that represent degrees of belief - can be assigned to nonrepeatable events - prior knowledge IS incorporated - use probabilities to represent t...

Bias introduced into a study when a clinician is aware of the patient's treatment type. - ANSWER ☑☑Observational bias Bias introduced when screening detects a diseae earlier and thus lengthens the time from diagnosis to death. - ANSWER ☑☑Lead-time bias If you want to know if geographical location affects infant mortality rate but most variation in infant mortality is predicted by socioeconomic status, then socioeconomic status is a _____. - ANSWER ☑☑Confounding variable/fac...

Biostatistics Final Exam Definitions UTA 100% Correct Bonferroni-Holm Multiple Comparisons -In the context of an ANOVA, rejecting the null hypothesis means there is a statistical difference between at least two means, but it won't tell you where it is. You use this to discover exactly which means are different. -Only used for Model I ANOVAs -A t-statistic for a two sample t-test assuming equal variance Steps to Applying the Bonferroni-Holm Multiple Comparison Test Step 1: Calculate...