MATH 221 Statistics for Decision Making
Week 4 iLab
Name:
MATH221
Statistical Concepts:
Probability
Binomial Probability Distribution
Calculating Binomial Probabilities
Open a new Excel worksheet.
Week 1
Collecting, Organizing and
Presenting Data
What Is Statistics?
Statistics helps us make decisions
without prejudice - data is
objective
Statistics is a process involving the
collection, organiz
Week 5: Normal Distributions
Graphs
of Normal Distributions
Standard Units and Areas
Under
the Normal
Curve
Areas Under the Normal Curve
Continuous Random Variable
Numerical
outcome of an experiment
Week 4: Probability Distributions
Discrete Data
Distributions
Random Variables and Probability Distributions
Statistical
Experiment - a process by which an
observation or measurement is obtained
The
7
Chapter
Week 7: Hypothesis Testing
A Statistical Hypothesis
A claim about a population.
Null hypothesis H0
Alternative hypothesis Ha
Statistical hypothesis that
contains a statement of equality, con
Week 6: Confidence Intervals
Inferential
Statistics
Introduction to Estimation
Inferential Statistics
Statistics are used to make inferences about a population from a sample.
Samples and Populations
Week 2
Linear Regression and
Correlation
Organizing Ordered Pairs of
Data
Correlation
Correlation and
regression involve the
study of ordered pairs
of data
This data, expressed as
(x,y) is usually f
Normal Distribution
Mean
4.7
Stdev
1.3
P(X<x)
0.0093
x
1.64
x
6
P(X>x)
0.1587
x1
P(x1<X<x2)
x2
4
0.6664
7
<- when I have x value or z value I use top
Always plac
Inverse Calculations
<-
P(<x)
x
0.95
6
Week 3: Probability Theory
What Is Probability
Probability Rules
Contingency Tables
Beyond the Basics: Chi-square
Tests
What Is Probability
Probability (P) is always expressed as a value between
0 a