Given the sample data set (113, 115, 117, 119, 127, 129), what's the standard deviation? correct answers 6.54
Why is business analytics a hard course to teach (Bell, 2013)?
A. every business student has to take it
B. there is too much info to teach it all
C. technology is changing so rapidly,...
BUAL 2600 Final exam || All Correct.
Given the sample data set (113, 115, 117, 119, 127, 129), what's the standard deviation? correct
answers 6.54
Why is business analytics a hard course to teach (Bell, 2013)?
A. every business student has to take it
B. there is too much info to teach it all
C. technology is changing so rapidly, professors have to change their courses each year
D. a lot of professors want to teach it
E. so many students want to spend the entire class discussing current events in light of analytic
development correct answers C
According to Ellenburg (2015), when presenting an argument with numbers it's important to
NOT
A. make sure the fact is true
B. draws an accurate, adjusted comparison between data
C. use a statistic that quickly persuades the reader
D. make a comparison without fully understanding the data
E. none of the answers reasonably completes the sentence given the info in the article correct
answers D
What scale is the variable "average low temperature by week recorded for each vineyard from
2010-2014"?
A. nominal
B. ordinal
C. interval
D. ratio
E. the answer is not given correct answers C
The "when" of the W's refers to
A. the publication date
B. the researcher(s) birthdate
C. the time the research was designed
D. the time the variable info was collected or events occurred
E. none of the above is the correct answer correct answers D
Data is collected from 5,000 students. Which of the following variables is qualitative?
A. calories in favorite meal from subway
B. mileage at end of ride on last vehicle driven
C. statistical software package which is most favored by Dr. Lee
D. Cost for an evening at the movies with friends, in dollars
E. all of the above are qualitative variables correct answers C
_____ describes any use of statistical analysis to drive business decisions from data
A. big data
,B. mining
C. business analytics
D. data tables
E. relational data bases correct answers C
Big Boy Restaurant has been recording how much of their business is from single customers
eating alone and in various sized groups. They've been tracking this and have the average
numbers for last month. They plan to create a pie chart illustrating the categories of 1, 2, 3, 4, 5,
and more. This can be considered _____ data
A. cross sectional
B. multi dimensional
C. big
D. time series
E. metaphysical correct answers A
Data files often record a _____ variable for each case which helps researchers and analysts avoid
duplication
A. quantitative
B. ratio
C. identifier
D. masking
E. dummy correct answers C
What's the 1st rule of data analysis?
A. add up all the numbers
B. look for big data
C. run quantitative analysis on all numbers
D. make a picture
E. find a cartoon correct answers D
A bar chart which orders categories from most to least in the frequency of observances is called a
_____ and used for
A. bingo chart/picking the winning option
B. deming chart/settling arguments
C. pareto chart/prioritizing and decision making
D. deconstructionist chart/clarifying obtuse arguments and conclusions
E. none of the above are reasonable answers correct answers C
When a sample of data is collected by the researcher as a result of the simple availability of the
data, it may be considered
A. voluntary response bias
B. involuntary response bias
C. a convenience sample
D. measurement error
E. double blind bias correct answers C
,The VP of student affairs of a small community college is studying students' response to the
possibility of a new student study center. A _____ design for sampling is a real possibility and
the best choice because the organization has a most complete sampling frame w/ detailed info
about each individual's characteristics
A. simple random
B. stratified random
C. cluster random
D. multistage random
E. the answer doesn't appear above correct answers B
Auburn Analytics, a local analytic consulting firm, is planning to do a survey of current interests
of 21-35 year olds in the greater auburn to opelika area, which they optionally defined as lee
county. They've gotten a copy of the recent (2010) census & sorted out a mailing list of all
individuals identified in the specified age range. The list is 400 pages long, with 50 individuals
per page. They randomly select a number between 1 and 50, then choose that number from each
page through the entire 400 pages. The method might best be described as ____ sampling
A. random systematic
B. simple random
C. stratified random
D. random cluster
E. the answer doesn't appear above correct answers A
An environmental advocacy group is interested in the perceptions of farmers about global
climate change. Specifically, they wish to determine the % of organic farmers who are concerned
that climate change will affect their crop yields. They use an alphabetized list of members of the
northeast organic farming association, a nonprofit organization with over 5000 members in a
multitude of states. They randomly select members from this list until they have succeeded in
contacting 150 members. What's the sampling frame?
A. an alphabetized list of the 5000 members of northeast organic farming association
B. all organic farmers
C. the proportion of organic farmers who are concerned about climate change affecting their crop
yields
D. 150 of the 5000 members of northeast organic farming association who are contacted
E. none of the above correct answers A
Key values or summary characteristics called statistics are derived from _____ data
A. sample
B. population
C. convenience
D. unbiased
E. analysis correct answers A
Measurement errors are best reduced by
A. data mining
B. randomization
C. piloting the instrument (test or survey)
, D. eliminating nonresponse bias
E. noen of the above correct answers C
Suppose large water district decides to randomly test water quality at residences across the
district. There are 30 divisions in the district each with 1400 residences. The water board
randomly chooses 25 residences from each division. What type of sample is this?
A. simple random
B. stratified random
C. cluster random
D. multistage random
E. the answer doesn't appear above correct answers B
If the local division supervisor of each division chooses the residences in his or her division, is
this likely a random sample?
A. yes
B. no correct answers B
According to Bell (2013), what microsoft software is most used for doing analytics?
A. word
B. excel
C. powerpoint
D. access
E. none of the above is a reasonable answer correct answers B
What was the reason Target had to become "sneakier" about tracking customer's purchases and
sending coupons based on this info collected (Hill, 2012)?
A. collecting customer's info is illegal
B. it was creeping out the customers and losing business
C. target did not want to act surreptitiously
D. the data target collected was misleading and inappropriate product coupons were sent to
families
E. noen of thea above is a reasonable answer correct answers B
Ellenburg (2015) suggests that the common factor in all mistakes noted in this article is that
_____
A. the numbers are false due to surveying errors
B. the numbers are made up in order to convince people their article is true
C. the numbers contain no actual falsehoods
D. there are no mistakes in this article
E. none of the choice above adequately reflect the correct answer correct answers C
Given the sample data set (113, 115, 117, 119, 127, 129), what's the variance? correct answers
35.67
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