Applied Managerial Statistlcs
Week 3 Quiz
Im
2.2.7
n tummy a possible descriplion of the sample
it taksea sample of employees ta drive to work
hing TV in a day for a sample of teenagers
3F) for a sample of deses
Applied Managerial Statistics
Week 3 Quiz
4 1aof14v m
' statement is false. Atrue statement is "Data at the ratio level can be placed in a meaningful order."
tatement ls false. A true statement is "Data at the ratio level can be ordered, although it i
Determine whether the random variable' IS discrete or continuous
a. The number of bald eagles' In the country.
b. The amount of snowfall.
c. The time it takes for a light bulb to burn out.
d. The number of freethrow attempts before the rst shot' rs made.
cfw_99 4.1.13
Determine whether the random variable is discrete or continuous.
a. The number of bald eagles in the country.
b. The amount of snowfall.
c. The time it takes for a light bulb to burn out.
(1. The number of freethrow attempts before the rst
MATH399 StatisticsLab Week 2
Question 1 is worth 5 points and each question after that is worth 4.5 points, for a
total of 50 points for the lab.
Name:
Statistical Concepts:
Using Excel
Graphics
Shapes of distributions
Descriptive statistics
NOTE: Dir
SOLVING
QUADRATIC
EQUATION
USING
E SQUARE ROOT PROPER
THE SQUARE ROOT PROPERTY
Formula states:
If k is a positive number xand
x k
x k
xthen,
k
2
or

=k
or
If k is a negative number, the square
of the
real number cannot be negative,
EXAMPLE
2
( x 7) 16
SPECIAL
FACTORING
STRATEGIES
MARCHAELA WILLIAMS
DIFFERENCE OF SQUARES
The formula for the difference of squares is: (a+b)(ab)= ab
Both terms of the binomial must be squares, for example:
m, 16g= (4g), 36=6
Example for factoring the difference of square
Professor Information
Vahid Keyhani
Contact
[email protected]
Biography
"I have been through some terrible times in my life, some of which
actually happened."  Mark Twain
MEET YOUR ONLINE FACILITATORVAHID VICTOR KEYHANI
Hi class, my name is Vahid Victo
State
CA
FL
GA
IL
KY
MI
NV
NY
OH
OR
PA
SC
TX
# of students
5
4
1
4
1
2
1
4
1
3
4
2
3
%
14.29
11.43
2.86
11.43
2.86
5.71
2.86
11.43
2.86
8.57
11.43
5.71
8.57
Students per State
16
14
12
10
8
6
4
2
0
CA
FL
GA
IL
KY
MI
NV
# of students
NY
%
OH
OR
PA
SC
TX
H
Standard Deviation
The Standard Deviation is a measure of how spread out numbers are.
Its symbol is (the greek letter sigma)
The formula is easy: it is the square root of the Variance. So now you ask, "What is the
Variance?"
Variance
The Variance is defin
Drive (miles)
33
28
77
71
54
81
38
29
6
78
63
36
63
36
86
76
42
83
20
94
39
88
25
80
42
71
73
55
25
76
40
4
36
54
6
State
SC
NY
PA
MI
FL
CA
OR
TX
IL
CA
NY
MI
PA
TX
FL
NY
TX
FL
IL
KY
SC
CA
GA
NV
IL
PA
FL
OH
CA
PA
IL
NY
OR
CA
OR
Shoe Size
11
7
10
8
9
10
10
GRAPHS
Nadine StuartChang
Week 3 discussion
Determining coordinates of different points
in a graph
Coordinate graphing sounds very dramatic but it is
actually just a visual method for showing relationships
between numbers. The relationships are shown on
Sandra Dorsett
Pythagoras Life and Contribution
to the World of Mathematics
The Life of Pythagoras
Pythagoras was born in Greece in
approximately 570 BC.
Pythagoras learned math from Thales.
Thales is one of the philosophers that
helped introduce mathem
Solving An Equation By
Substitution
The substitution method
The method of solving "by substitution" works
by solving one of the equations for one of the
variables (you choose which one), and then
plugging this back into the other equation,
"substituting"
MATH399 StatisticsLab Week 2
Question 1 is worth 5 points and each question after that is worth 4.5 points, for a
total of 50 points for the lab.
Name: Nadine StuartChang
Statistical Concepts:
Using Excel
Graphics
Shapes of distributions
Descriptive
SOLVING EQUATIONS
USING SQUARE ROOTS
Steps to solve quadratic equations by the square root property:
1. Transform the equation so that a perfect square is on one side and a constant is on the other
side of the equation.
2. Use the square root property to
EXPLORING FACTORS
AND FACTORING
TRINOMIALS
GCF
Greatest common factor is the largest factor of two or
more
numbers
GCF EXAMPLE
15 = 3*5
25 = 5*5
GCF = 5
GROUP AND FACTOR OUT THE GCF, THEN
COMBINE
3x23x90
FACTOR OUT THE GCF OF 3 FROM THE
EXPRESSION
3x
2
Systems of Equations
Using the substitution method
Steps needed
1. Solve the variable from either equation
2. Exchange the solved variable into the other equation
3. Solve for the second variable
4. Complete the solution for the first variable with the so
Understanding Functions
The definition of a function:
relation between a set of inputs and a set of permissible outputs with
the property that each input is related to exactly one output
https:/en.wikipedia.org/wiki/Function_(mathematics)
Function= f(x)
MATH399 StatisticsLab Week 2
Question 1 is worth 5 points and each question after that is worth 4.5 points, for a
total of 50 points for the lab.
Name: _Stephanie Brookshire_
Statistical Concepts:
Using Excel
Graphics
Shapes of distributions
Descripti
MATH399 Statistics
Week 4 Lab
Name: _Yulibeth Ojeda_
Statistical Concepts:
Probability
Binomial Probability Distribution
Calculating Binomial Probabilities
Open a new Excel worksheet.
1.
2.
3.
4.
5.
Open spreadsheet
In cell A1 type success as the label
Drive (miles)
33
28
77
71
54
81
38
29
6
78
63
36
63
36
86
76
42
83
20
94
39
88
25
80
42
71
73
55
25
76
40
4
36
54
6
51.6571428571
25.801211619
#NAME?
State
SC
NY
PA
MI
FL
CA
OR
TX
IL
CA
NY
MI
PA
TX
FL
NY
TX
FL
IL
KY
SC
CA
GA
NV
IL
PA
FL
OH
CA
PA
IL
NY
OR
MATH399 Statistics
Week 4 Lab
Name: Andrea A
Statistical Concepts:
Probability
Binomial Probability Distribution
Calculating Binomial Probabilities
Open a new Excel worksheet.
1.
2.
3.
4.
5.
Open spreadsheet
In cell A1 type success as the label
Under t
MATH399 StatisticsLab Week 2
Question 1 is worth 5 points and each question after that is worth 4.5 points, for a
total of 50 points for the lab.
Name: Andrea A
Statistical Concepts:
Using Excel
Graphics
Shapes of distributions
Descriptive statistics
MATH 399N Statistics for Decision Making
Week 6 iLab
Name: Andrea
Statistical Concepts:
Data Simulation
Confidence Intervals
Normal Probabilities
Short Answer Writing Assignment
All answers should be complete sentences.
We need to find the confidence i
State
CA
FL
GA
IL
KY
MI
NV
NY
OH
OR
PA
SC
TX
Sum  State
BAR GRAPh/CHART
Count of Stat
12
10
8
6
4
2
0
CA
FL
GA
IL
KY
MI
NV
N
Count of State
IL
KY
MI
NV
NY
OH
OR
PA
SC
TX
Car Color
black
blue
dark blue
green
orange
red
silver
white
Sum  Car Color
PIE CHA