Histogram: A histogram shows shape, center, and spread.
Shape of a distribution :
Mode: The peak of the histogram. A histogram with one peak is called unimodal. Histograms with two peaks are bimodal. Those with three or more are
called multimodal. Multipl
Statistic- A way of reasoning, along with a collection of tools and methods, designed to help us understand the world Categorical Variable- A variable that names categories (whether with words or numerals) Quantitative Variable- A variable in which
Chapter 14 Law of Large Numbers states that the long-run relative frequency of repeated independent events gets closer and closer to the true relative frequency as the number of trials increases Independence two events are independent if learning t
-Samples produce different b0 and b1 , but sampling distribution model of regression slope is centered at 1 (the slope of idealized regression line) -Standardize Slopes by subtracting the model mean and dividing by SE Student's t with n-2 df t (df =
3/3/2008 3:47:00 PM
STATISTIC PRELIM 1 Chapter 2 Answering the who, what, when, where, why and how questions provide context for data values. o If you can't answer the who or the what there is no data The people we experiment on are the subjects or
Lecture 11 Examining CLT and Sample Size
Statistical v. Practical Significance
More on Interpretation
Examining the CLT - How Does this Work?
Sample Size Basics
It is a very cold day.
Lecture 9 Variability in Estimates
and Confidence Intervals
Exam Results Very Nice!
4.1 Variability in Estimates
4.2 Confidence Intervals
Reminder Bivariate Assignment due Friday
Word Document Nothing Else Needed
Lecture 10 Hypothesis Testing Framework
Confidence Interval Review
Hypothesis Testing Big Ideas
Confidence Interval for Hypothesis Test
Test Statistic & Probability Value for Hypo. Test
Notation and Summary
ILRST 2100/ STATSCI 2100
Article Evaluation Part 1
SEE DUE DATES ON SYLLABUS
Find article in PUBMED* that meets criteria
a. You should choose a topic you know something about or are interested in
do not use an article you are usin
Parameter of Interest: Average difference between the point prices of all 0.99 carat and 1 carat diamonds.
pt99 - pt100
Point Estimate: Average difference between the point prices of sampled 0.99 carat and 1 carat diamonds.
xpt99 - xpt100
, difference bet
Review and Bivariate
Change in Syllabus Bivariate Due on Feb. 27
Exam1 is next Tuesday in Class
Bivariate Descriptive Analysis
Big Ideas Randomness, Sampling,
LLN, Hypotheses, Di
ILRST 2100 7th November
The following regression output is shown, where the response variable is Weight.
Estimate Std. Error t value Pr(>|t|)
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