STATISTICS 13
Lecture 7
Oct 8, 2010
Review
properties of mean and standard deviation empirical Rule and Tchebysheffs Theorem z-scores: xx
z - score= s
percentiles, Q1, Q3 and IQR boxplots
Bivariate Data
When two variables are measured on a single exper
STATISTICS 13
Lecture 6 Oct 6, 2010
Review
Measures of variability Range Variance Standard deviation: properties Empirical rule for bell-shaped distribution Tchebysheffs Theorem
Measures of Relative Standing
What is the position of one measurement relat
STATISTICS 13
Lecture 5 Oct 4, 2010
Shape of the data -Bell shaped -Skewed -Bimodal Measures of center Arithmetic Mean Median Mode
Review
Effects of outliers and skewness
Measures of Variability
A quantitative measure that describes the spread or dispe
STATISTICS 13
Lecture 4 Oct 1, 2010
Graphical description of quantitative data
Line chart (for time series) Bar and Pie charts (for categorized quantitative variables) Dotplot (Relative) frequency histogram
Reivew
Example: Weights
Weights of 200 indivi
STATISTICS 13
Lecture 3 Sept 29, 2010
Review
Types of variables: qualitative vs. quantitative Population vs. Sample: whole vs. part Summarize data in a table: frequency, relative frequency, percentage Pie chart and bar chart: show data across categories
STATISTICS 13
Lecture 2 Sept 27, 2010
What is Statistics?
As a colloquial term: numerical facts Sports statistics (e.g. basketball scores, goals scored in a season) Business statistics (e.g. gross domestic product, total volume of transactions) As a disc
STATISTICS 13
Elementary Statistics Fall 2010
Lecture 1: Sep 24, 2010
Instructor
Thomas C. M. Lee:
Office: 4220 Mathematical Sciences Building Email: [email protected] Office Hours : MW 2:10-3:00 PM
An Apology
Thomas will miss the first three classes,
STA 13A Spring 2010 Selected Solutions to HW 1 Thomas Lee
1.1 a b c d e The experimental unit, the individual or object on which a variable is measured, is the student. The experimental unit on which the number of errors is measured is the exam. The exper
STA 13A Discussion 1 Solutions
1.8 a-b The variable survival time is a quantitative continuous variable. c The population of interest is the population of survival times for all patients having a particular type of cancer and having undergone a particular
1 .12 E lection 2 008 During the spring o f 2006 the news media were already conducting opinion polls that tracked the fortunes o f the major candidates hoping to become the president o f the United States. One such poll conducted by Financial Dynamics sh