Basic Statistics for Research
Lecture 1
Chengrui Li
Jan 20, 2014
Chengrui Li
Basic Statistics for Research
Jan 20, 2014
1 / 24
Todays topics
Chapter1
What is Statistics?
Some basic concepts
Statistical analysis process
Chapter 2.1-2.2
Main Types of Data
D
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Basic Statistics for Research
Lecture 4
Chengrui Li
Feb 17, 2014
Chengrui Li
Basic Statistics for Research
Feb 17, 2014
1 / 30
Last week
The correlation coefficient r
r=
Sxy
p
Sxx Syy
where
P
P
Sxy = P (xi x)(yi Py ) = xi yi nxy
Sxx = P (xi x)2 = P xi2 nx
Basic Statistics for Research
Lecture 5
Chengrui Li
Feb 24, 2014
Chengrui Li
Basic Statistics for Research
Feb 24, 2014
1 / 31
Last week
Event relations
I
I
I
I
Complement A or Ac
Union A B
Intersection A B or AB
Venn Diagram
Laws of probability
I
I
I
Law
Basic Statistics for Research
Lecture 6
Chengrui Li
Mar 3, 2015
Chengrui Li
Basic Statistics for Research
Mar 3, 2015
1 / 34
Last week
Random variables X (associates a numerical value with each outcome
of an experiment)
Probability distribution f (xi ) =
Basic Statistics for Research
Lecture 3
Chengrui Li
Feb 10, 2014
Chengrui Li
Basic Statistics for Research
Feb 10, 2014
1 / 36
Last week
Numerical methods for describing data.
I
I
I
I
I
I
Pn
Mean: x = i=1 xi /n
Median, 100pth-percentile,
P Quartile.
Sampl
Basic Statistics for Research
Lecture 2
Chengrui Li
Feb 3, 2014
Chengrui Li
Basic Statistics for Research
Feb 3, 2014
1 / 40
Last week
Statistics, basic concepts, statistical analysis process.
Main types of data, graphs and tables.
Chengrui Li
Basic Stati
Basic Statistics for Research
Lecture 7
Chengrui Li
Mar 24, 2015
Chengrui Li
Basic Statistics for Research
Mar 24, 2015
1 / 26
Todays topic
Chapter 7
Sampling distribution of a statistic
Distribution of the sample mean
Central limit theorem
Chapter 8.1 -
Sajan Patel
Stat AP Histogram Activity
Barnes
PART ONE:
Histogram A belongs to Variable 1
o The shape of this histogram is roughly symmetrical meaning that the data are spread out evenly around 50, which
happens to be both the mean and the median. Also t
Taste the Statistics
Ms. Barnes
AP Statistics Block D
November 2, 2012
Michael Hwang
Sarah Kim
Sajan Patel
Dan Shen
Introduction
The purpose of this experiment was to develop a relationship between the number
of licks needed to reach the center of a lolli