STAT285
Introductory Business Statistics
Class 5: More about Graphs and
Descriptive Statistics
Review of Class 4
Summary Statistics (descriptive statistics)
Mean and median
Variance and SD
Quartile and percentile
Interpreting SD
Empirical rule: 68%,
Use the following data sets to answer this scientific question:
Are X and Y independent? Use a 5% significance level and a two tail test.
Also, estimate the regression of Y on X.
x
y
5
3
7
8
3
1
2
9
7
x
9
4
2
1
2
9
8
1
0
y
2
3
4
2
3
1
5
2
5
x
1
3
6
1
2
0
Area Between Curves
In this section we are going to look at finding the area between
two curves. There are actually two cases that we are going to be
looking at.
In the first case we want to determine the area between
and
on the interval
[a,b]. We are als
Proof of Various Derivative
Facts/Formulas/Properties
In this section were going to prove many of the various derivative facts, formulas and/or
properties that we encountered in the early part of the Derivatives chapter. Not all of them will
be proved her
Proof of Various Limit Properties
In this section we are going to prove some of the basic
properties and facts about limits that we saw in the Limits
chapter. Before proceeding with any of the proofs we should
note that many of the proofs use the precise
Institution
Expenditures Type
JohnsHopkinsUniversity
1680927 Private
UniversityofCalifornia-SanFrancisco
885182 Public
UniversityofWisconsin
881777 Public
UniversityofMichigan
876390 Public
UniversityofCalifornia-LosAngeles
871478 Public
UniversityofCalif
STAT285
Introductory Statistics for Business
Class 8: Probability III &
Review for Midterm1
Review of Class 7
Probability of an even E
number of outcomes in E n( E )
P( E )
number of outcomes in S n( S )
Permutation and combination
Whether the order m
STAT285
Introductory Statistics for Business
Class 4: Variance, SD and Distribution
Review of Class 3
Mean
Median
Mode
Symmetry and Skewness
Quartile
Percentile
Variability
How to Define Variability
Consider two data sets
1, 2, 3, 4, 5
Mean
Deviation fro
STAT285
Introductory Statistics for Business
Class 3: Measuring Central Tendency
Review of Class 2
Primary source of data
Experimental design
Survey
Observational study
Secondary source of data
Published
Describing Qualitative (graphically)
Freque