Questions 1620
The last page of the exam shows data collected on a random sample of 36 movies. The following
variables were recorded for each of the 36 movies sampled:
Year: year in which the movie was
Categorical, Qualitative
Nominal no apparent order
Ordinal categories, can be
ranked(use bar chart)
Numerical, Quantitative (histogram)
Discrete
Continuous
Cross Sectional
Same point and time
Time Series
Measured over time
Population parameter is:
Sampl
95% CI interval problems
5number summary
Min. Q1 Median Q3 Max
Finding outliers:
high = Q3 + 1.5(IQR)
low = Q1 + 1.5(IQR)
IQR = Q3Q1
50% of _ is between Q1 and Q3
point estimate for estimating the true
proportion
x/n ex.
Margin of Error
Whats the 95% ME
QSIS 284
Midterm A
Spring 2012
Name _
80 points total
Multiple Choice: 2 points each.
Questions 14
A dataset called restaurants contains ratings for a SRS sample of 50 urban and 50 suburba
BStat 284
Practice Midterm
(From Spring 2012)
Name _
80 points total
Multiple Choice: 2 points each.
Questions 14
A dataset called restaurants contains ratings for a SRS sample of 50 urba
Click the Stat button (middle towards the top)
Click 1) edit
Enter the return in for both columns
Go back to the stats button, go to the middle column CALC, hit 2) 2Var Stats, enter
the top number, with the x
Each sheet contains a yellow cell for each answer.
You may use blank areas in the spreadsheet for intermediate steps.
Put your final answer in the yellow cell. For numeric answers, do no
Instead, enter the formula that yields the answer.
For example:
What
BA 284
Computer Lab I  Assignment
Due Tuesday Jan 20, 2015
Name _ _
Name _
signatures _
_
If you are working in a pair, please print each name and provide your signature below
to indicate that both partners shared equally in completing the assignment.
1.
Duquesne University
AJ Palumbo School of Business
QSIS 284
Assignment 2
Due: On Wednesday, April 15
th
Different states in the United States have different levels of automobile insurance
coverage. The attached sheet provides data on the percentage of unin
Dr. Charles Wilf
Business Statistics II
11 March 2015
After analyzing the financial performance of the five sectors according to the three
variables, it is easy to recognize the sectors that performed better than others and improved their
financial standi
Dr. Charles Wilf
Business Statistics II
14 April 2015
Assignment II
To analyze the relationship between the percentages of uninsured automobiles in
various regions, I decided to use a chisquared statistical analysi
TTest Statistics for TwoSample TTests by Variable and
Significance at Alpha Levels
Current Ratio
Technology
Utilities
Clothes
Entertainment
Pharmaceuticals
* p < .05
Technology

Utilities Clothes
2.61*
1
Stock Data Means and Standard Deviations Last Fiscal Period
Current
Ratio
Earnings per
Share
Return on
Equity
Technology
mean
St. dev.
3.22
3.47
0.75
1.20
(3.39)
34.25
Utilities
mean
St. dev.
1.43
1.44
1.70
1.37
3.96
24.42
Clothing
mean
St. dev.
2.53
1.28
Class Data Sheet  Spring 2015 11 AM
Gender
m
f
m
m
m
m
m
m
m
f
m
m
m
f
f
m
m
f
f
m
m
m
m
f
m
m
f
m
m
m
f
f
Res.
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
off
on
on
on
off
on
off
on
on
on
on
off
on
on
off
on
Job?
job
no
no
no
job
job
no
no
Duquesne University
AJ Palumbo School of Business
QSIS 284
Assignment 1
Due: At the start of class Wednesday, March 11
th
Stock performance influences individual and institutional investment decisions. While each
companys stock can be evaluated on its own
Stock Data Means and Standard Deviations Current Fiscal Period
Current Ratio Earnings per Share Return on Equity
Technology
Mean
4.08
0.67
49.30
Standard Deviation
5.87
2.78
Assignment two
Array the data:
High uninsured
low uninsured
Midwest
Northeast
Southeast
West
Every state goes into only one of those categories
Tally the number of states in each category
Create para
SUMMARY OUTPUT
Regression Statistics
Multiple R
R Square
Adjusted R Square
Standard Error
Observations
0.834517 r = correlation coefficiant
0.696418624 Measures how well the model fits the data
0.690094012
30349.22833
50
ANOVA
Regressio
Make/Model
Honda Civic
Honda Civic
Toyota Prius
Toyota Corolla
Chevrolet Malibu
Chevrolet Malibu
Nissan Altima
Nissan Altima
Ford Escape
Ford Escape
Saturn Vue
Saturn Vue
Lexus RX
Lexus RX
Toyota Highlander
Toyota Highlander
Class
Type
Small Car
Hybrid
Sm
1. Of those who filled out impact applications, are males or females more likely to live with
family upon release? Two sample ttest
2. Are people from the Hill District more likely to be convicted of parole violation or drugs
and alcohol? Paired Ttest
3
Project Proposal Assignment 1 (4 pts for Lab 3)
Due: No later than Thursday February 20
If you want to collect data over Spring Break, this must be approved BEFORE you leave campus.
Please provide a list of
BA 284
Computer Lab I  Assignment
Due Tuesday Jan 21, 2014
Name
signatures _
If you are working in a pair, please print each name and provide your signature below
to indicate that both partners shared equally in completing the assignment.
1. Data:
Golf b
BStat 284
Simple Linear Regression
Handin Lab Assignment Due Tuesday Feb 18
Please note that Monday is Presidents Day. I will be in my office from 911 am
Real Estate Data continued (7 pts)
1. Refer to the real estate data. This time the realtor would li