Given the projected demands for the next six months, prepare an aggregate plan that uses inventory, regular time and
The plan must wind up with no units in ending inventory in Period 6. Regular time capacity is 150 units per month.
Overtime capacity is 20
A time study analyst, timed an assembly operation for 30 cycles, and then computed the average time per cycle, wh
18.75 minutes. The analyst assigned a performance rating of .96, and decided that an appropriate allowance was 15
Assume the allowance factor
Given the projected demands for the next six months, prepare an aggregate plan that uses inventory, regular time and
The plan must wind up with no units in ending inventory in Period 6. Regular Time Capacity is 150 units per month
Overtime Capacity is 20
W
A
D(2)
B(2)
E
E(2)
C(4)
F
D (3)
G (2)
D
W
A 1x100=100
100
B(2) 2x100=200
D(2) 2x100=200 E 1x100=100 E(2) 2x200=400
F 1x200=200
C(4) 4x100=400
D(3) 3x400=1200
G(2) 2x400=800
D 1x800=800
Level
0
1
2
3
Item
W
A
B
C
E
F
G
D
Quatity
100
100
200
400
500
200
8
Data from a Study on SAT math scores and High School grades in Math
For practice - the question you want to answer is below
Does the score a student earns on the schools math proficiency exam
Significantly correlate with the score the student's earns
on t
Correlation
Some material from http:/www.nvcc.edu
/home/elanthier/methods/correlation.ht
m
Correlation
Correlation is a way to measure how
associated or related two variables
are.
The researcher looks at things that
already exist and determines if and
in
Statistical Estimation
T-Tests & Z-Tests
Some material from
http:/stattrek.com/hypothesis-test/di
fference-in-proportions.aspx
One or Two-Tailed Tests
In practice, you should use a one
tailed test only when you have good
reason to expect that the differ
Confidence Intervals
Some adapted from http:/
stattrek.com/estimation/confidence-in
terval.aspx
and
http:/www.stat.yale.edu/Courses/199
7-98/101/confint.htm
Confidence Interval
Statisticians use a confidence interval
to describe the amount of uncertainty
Data from a Study on SAT scores, High School grades in Math, Science and Eng
Their University GPA is after 3 semesters.
These are all Computer Science Majors at University
(Note: this university has a different GPA system - not a 4 point scale)
Observ. SA
Types of Measurement
Adapted from Leedy, P., and Ormrod, J.,
Practical Research.
Measurement as a Tool
Measurement
is the limiting of the data
of any phenomenon-substantial (observable) or
insubstantial (concepts)
so that those data may be interpreted
an
Experiments
Experimental Design
Experimental design attempts to prove
cause-and-effect relationships
The methodology must be planned carefully
to insure proper statistical results
You can statistically find significant
correlation or cause-and-effect b
You are the admissions director and you have been trying to improve
the mean SAT score of your new students. You have obtained the
75% percentile scores for your aspirant schools.
The average 75% score for your incoming students is 1125.
You want to know
Organizational Research Methods
Descriptive Statistics Terminology
Variable: Its anything that can take on a different quality or quantity
o Example: Age of students, Attitude toward a particular social issue,
the number of hours people spent watching tel
The owner of a large apple orchard asked if you could determine
If their harvest this year of approximately 200,000 apples
would have an average weight of between 100 and 120 grams.
So you took 36 random samples of 40 apples each
and determined the sample
Variables and Hypotheses
Adapted from Practical Research
And other material
1
Variables
Variable
any
characteristic on which the elements
of a sample or population differ from each
other
Height, weight, sex, national origin, age,
grade, number of sick d
Using Excel for
Statistics
Excel Analysis ToolPak
You must be sure that you have the
Excel ToolPak loaded into Excel it is
what we will use for our statistics
section.
It is not automatically loaded when first
installing Excel.
For this portion of the cou