Homework 02
Elementary Statistics
5.1) A) E(x) = (50 x 0.375) + (65 x 0.15) + (70 x 0.225) + (75 x 0.05) + (90 x 0.20) = 66 B)
Variance=14.57738 C) Standard Deviation=212.5 s=
( xm)2
n1
5.2) A)
x
P(x
Homework 3
Elementary Statistics
9.1 A)
3.0
25
x 0.025=3+ z 0.025
H A : >3H o : 3
;
; z=1.96 B)
x 0.05=3z 0.05
9.0
30 ;
6.5
H A : >3H o 3 ; t=-1.6991 C) x 0.02/ 2=3 z 0.02/ 2
H A : =3H o : 3 ; t=
51
SandifordCMIS7005-2
1
NORTHCENTRAL UNIVERSITY
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Student: Candise O. Sandiford
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MIS7004-8- Week 1 Discussion
As technology continues to evolve, certain protocols need to be in place to ensure
that all functions are operating appropriately. Businesses today must take careful
note
Your license will expire in 14 days.
Your temporary usage period for IBM SPSS Statistics will expire in 14
days.
GET
FILE='/Users/MyNewMacBook/Downloads/dsus4data/ChickFlick.sav'.
Warning # 5281. Comm
ALPHA
alpha
BETA
beta
GAMMA
gamma
DELTA
delta
EPSILON
epsilon
ZETA
zeta
ETA
eta
THETA
theta
IOTA
iota
KAPPA
kappa
LAMBDA
lambda
MU
mu
NU
nu
XI
xi
OMICRON
omicron
PI
pi
RHO
rho
SIGMA
sigma
TAU
tau
UPS
STATE OF BAHRAIN
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Background Information
Sony is known worldwide as one of the most popular electronic companies around th
Qualitative research on managers
The two IT organizations that have been taken in to consideration in the research are IBM and
Accenture. Five IT managers of each of these organizations have been inte
Standard Normal Deviation* Has a mean of 0 and a standard deviation of 1
Statistic* A numerical measurement describing some characteristic of a sample.
The science of collecting, analyzing, and interp
biased any systematic failure of a sampling method to represent its population
strata when groups of experimental units are similar, they are gathered into these
groups
census a sample that consists o
1st Quartile* 25th percentile of the observation below it
Play audio for this term
2nd Quartile 50th percentile of a data set, the Median
Play audio for this term
3rd Quartile 75th percentiles of a da
Interquartile range distance between the first and third quartiles, aka the distance
between the 75th percentile and the 25th percentile.
Matched Pairs The design of an experiment for paired compariso
Another useful pictorial is the stemandleaf. It is similar to a histogram in that it
shows the range of data, where the data are concentrated, if there are any outliers
(occasional extremely high or e
Control Group* A group that does not receive the treatment
Convenience Sample* A sample where the subject are selected, in part or in whole,
at the ease of the researcher. A statistical method of draw
Positively Associated When the scatter plot gives you a positive slope
Quantitative variable They represent a measurable quantity
Questionnaire Bias The way a question is asked to influence the respon
Displaying categorical data in simple graphical formats such as bar charts and pie
charts
Displaying quantitative variable data in simple graphical formats such as dot plots,
frequency histograms, and
Making predictions is only one use of statistics. Suppose you have recently
developed a new headache/pain remedy that you call AcheAway. Should you
produce AcheAway in quantity and make it available t
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Learning about variables
Understanding the steps in statistical reasoning
Learning several uses for statistical reasoning
For many people, statistics m