COURSE SYLLABUS Ohio Northern University College of Arts and Sciences Department of Mathematics and Statistics Effective Date: Fall 2011-12 Course: STAT 1761 Name: Statistics for Pharmacy Credit hours: 3 Lecture hours/week: 3 Lab hours/week: 0 Instructor: Staff Usual student level: P2 Course required of and limited to students in: Pharmacy Course frequency per year: Offered Every Year, Fall Semester, Spring Semester Average enrollment per year: 160 This course has a prerequisite: MATH 1401 or equivalent This course is a satisfactory prerequisite for: STAT 2561 Catalog Description: Describing data graphically and numerically; Describing bivariate data; Probability concepts; Random variables and probability distributions (both discrete and continuous); Sampling distributions; Statistical inference (point estimation, confidence intervals, hypothesis testing) for single means and proportions, and the difference between two means and proportions; Statistical study designs. Course Objectives: To introduce the students to data analysis, concepts of probability, and fundamentals of statistical inference as used in Pharmacy. Textbook: “Biostatistical Analysis” by Zar (Prentice Hall 5e) Outline of content follows: (see attached) Course Outline STAT 1761 Title: Statistics For Pharmacy Introduction (2 hours) Population; sample Descriptive vs. inferential Types of data (ratio, etc.) o continuous and discrete data Simple random sample Descriptive Statistics (4 hours) Understanding summarized data; histograms Mean and median, 1st and 3rd quartiles Understanding summarized data: box and whiskers Variance, standard deviation, coefficient of variation Bivariate quantitative data – scatter diagram Probability Concepts (5 hours) Probability assignment through relative frequencies Probability assignment through equally likely outcomes Conditional probability Independence Ratio, proportion, and rate Incidence and prevalence Relative risk and odds ratio Bayes' Theorem o rate of infection if a group is exposed to a pathogen o sensitivity of a test o specificity of a test o predictive value of a test Probability Distributions (6 hours) Binomial distribution o Identify setup resulting in binomial distribution o binomial probability formula – how to use it o using calculator for probabilities (instead of tables) probability function o cumulative distribution function expected value & variance formulas Standard normal distribution o continuous distributions o describe graphically; E(Z)=0, V(Z)=1 o probabilities using calculator Other normal distributions o standardization o probabilities using calculator Sampling Distributions (5 hours) Distribution of sample mean X o example of taking a random sample of size 2 with replacement from a numerical pop.{ 80, 100, 100} of size 3 X o o o o compute expected value, variance of X compare to pop mean, variance formulas, sampling with/without replacement sampling from normal population sampling from a possible non-normal population: Central Limit Theorem sampling from non-normal population (large sample size) Distribution of sample mean X 1 X 2 o o o compute probability distribution of X normal pops non-normal, large samples computing probabilities Sample proportion P̂ o population proportion: p o sample proportion: p̂ o o distribution of random variable P̂ - relation to binomial expectation; variance o o o distribution of P̂ - large sample sizes continuity correction computing probabilities Difference of sample proportion s Pˆ1 Pˆ2 o distribution - large sample sizes o computing probabilities Point and Confidence Interval Estimation (8 hours) Estimation of o o o o o o o o o o o o o know what a point estimate is know what an unbiased estimate is know what a consistent estimator is interval estimation of µ know what a confidence level represents find critical value z1-/2 find confidence interval estimates of µ when σ known when sampling from normal population when sampling from non-normal population but with large sample size, unknown know why central limit theorem used for given confidence level and , and a desired error margin W, calculate the necessary sample size n find confidence interval estimates of µ when σ unknown t distribution know properties use TI solver to find critical values know when X S/ n use it to estimate when small size sample from normal distribution, unknown find confidence interval estimates of µ when σ unknown Estimation of 1-2 Estimate 1-2 in various situations o o o when 1 and 2 known when 1 and 2 unknown but assumed to be equal pooled variance s 2p use of TI's 2-SampTInt when 1 and 2 unknown and possibly not equal: use of TI's 2-SampTInt Estimation of p o has a t-distribution with n-1 degrees of freedom know formula and understand how to use Estimation of p1-p2 o know formula and understand how to use Hypotheses Tests (7 hours) Know what the null and alternative hypotheses are o o research hypothesis know how to choose them Know what a type I error is Know what a type II error is Know what and represent Be able to identify one tail and two tail tests Know what p-value represents; how is p-value defined in terms of z statistic for various one and two-tailed tests When known: be able to perform hypothesis tests concerning using decision rule in terms of o o o When unknown: be able to perform hypothesis tests concerning using decision rule in terms of o o o sample mean x z-statistic p value sample mean x t-statistic p value Know how to use TI calculator’s statistical testing functions for hypothesis tests comparing 1 and 2 o when 1 and 2 known o when 1 and 2 unknown but assumed to be equal o when 1 and 2 unknown and possibly not equal Simple Linear Regression (3 hours) Recognize bivariate data Use given formulas to compute o o The sample regression equation (least squares line) The sample coefficient of determination and the correlation coefficient Interpreting your results