C207 OA Exam Questions & Correct
Answers Verified 100% Correct |Latest
Updates|
Autocorrelation - ANSWER -concern with multiple regression. lag time in data
that might throw off correlation of data points.
i.e. researcher is analyzing mortgage rates and disposable income
Cyclicality - ANSWER -oscillating patterns that can go on for years
Seasonality - ANSWER -pattern that occurs within a single year
i.e. retail store gets a spike of sales in Nov and Dec
cumulative distribution - ANSWER -shows frequency of a variable relative to
cumulative/total
probability distribution - ANSWER -list of possible outcomes with associated
probabilities
Normal distribution - ANSWER -unimodal with the mean and median approx.
equal
Ishikawa's 7 tools of quality - ANSWER -claimed to solve 90-95% of quality
problems
Run chart - over time
Control Chart - over time with limits
Cause and Effect - why/how process
Flow Chart - where/direction process
,Check Sheet - collect data
Histogram - distribution by time (i.e. unimodal)
Pareto - bar chart by highest to lowest frequency
Scatter diagram - shows relationship
scatterplot or scatter diagram - ANSWER -2 variables. shows correlation
relationship.
"AS" "VERSUS" "AFFECTS"
Correlation coefficient (r-score)
0 = weak, 1 or -1 = strong
positive = slanting upward
negative = slanting downward
i.e. sales vs coupon release count
how training hours affect performance
identifying effective marketing tactics (tactic vs sales)
Run chart - ANSWER -depict trends in data over time
Control chart - ANSWER -run chart with control/limit lines
control range - distance between control/limit lines
i.e. monitoring performance of production process
Fish bone aka cause and effect diagram - ANSWER -Used for analyzing potential
causes of problems.
Flowchart - ANSWER -used to show a process
i.e. a hotel wants a clear process to streamline customer check-in duration
,Check sheet - ANSWER -a physical sheet used to record data for future use
Histogram - ANSWER -1 variable OVER TIME
Pareto Chart - ANSWER -bar chart with 1 variable in decreasing order of
frequency
i.e. a chart that shows the most common causes of student dropout
a check sheet shows that out of 100 returned items, 50 were damaged, 30 wrong
size, 5 wrong order, 5 no longer wanted
SIPOC diagram (quality management) - ANSWER -High-level, big-picture,
company-wide, diagram that shows whole process
Suppliers
Inputs
Process
Output
Customer
fact-based decision making - ANSWER -decision-making based on collection and
analysis of data.
reduces external bias, fosters trust in plans
Common Cause Variation - ANSWER -Variation that is natural and expected
Special Cause Variation - ANSWER -variation which unexpected and unknown
IRT (Item Response Theory) - ANSWER -model of designing, analyzing and
scoring tests
, Norm-referenced score - ANSWER -a test that compares a student's performance
against a group
i.e. taking a test with the scoring being based on the scores of other students
Criterion referenced Score - ANSWER -a test that compares a student's
performance against a specific criteria
i.e. taking a test that requires 80% in order to pass.
Prevalence - ANSWER -total active cases / total population
the portion of population which is currently infected
Incidence - ANSWER -new cases per capita. most important analytic to determine
vaccine success.
number of new cases of a disease
Cumulative Incidence - ANSWER -total new cases over a defined period
i.e. researcher wants to know how many new cases of Zika virus there were in
Florida during 2016
Ratio (regarding cases in a study) - ANSWER -compares relationship between two
groups
i.e. females are 2x more likely than males to develop alzhiemers
KPI - ANSWER -stats that MEASURE performance. SMART goals follow to
drive improvement.
i.e. a company wants to assess performance regarding customer, revenue growth,
and operating efficiency.
Answers Verified 100% Correct |Latest
Updates|
Autocorrelation - ANSWER -concern with multiple regression. lag time in data
that might throw off correlation of data points.
i.e. researcher is analyzing mortgage rates and disposable income
Cyclicality - ANSWER -oscillating patterns that can go on for years
Seasonality - ANSWER -pattern that occurs within a single year
i.e. retail store gets a spike of sales in Nov and Dec
cumulative distribution - ANSWER -shows frequency of a variable relative to
cumulative/total
probability distribution - ANSWER -list of possible outcomes with associated
probabilities
Normal distribution - ANSWER -unimodal with the mean and median approx.
equal
Ishikawa's 7 tools of quality - ANSWER -claimed to solve 90-95% of quality
problems
Run chart - over time
Control Chart - over time with limits
Cause and Effect - why/how process
Flow Chart - where/direction process
,Check Sheet - collect data
Histogram - distribution by time (i.e. unimodal)
Pareto - bar chart by highest to lowest frequency
Scatter diagram - shows relationship
scatterplot or scatter diagram - ANSWER -2 variables. shows correlation
relationship.
"AS" "VERSUS" "AFFECTS"
Correlation coefficient (r-score)
0 = weak, 1 or -1 = strong
positive = slanting upward
negative = slanting downward
i.e. sales vs coupon release count
how training hours affect performance
identifying effective marketing tactics (tactic vs sales)
Run chart - ANSWER -depict trends in data over time
Control chart - ANSWER -run chart with control/limit lines
control range - distance between control/limit lines
i.e. monitoring performance of production process
Fish bone aka cause and effect diagram - ANSWER -Used for analyzing potential
causes of problems.
Flowchart - ANSWER -used to show a process
i.e. a hotel wants a clear process to streamline customer check-in duration
,Check sheet - ANSWER -a physical sheet used to record data for future use
Histogram - ANSWER -1 variable OVER TIME
Pareto Chart - ANSWER -bar chart with 1 variable in decreasing order of
frequency
i.e. a chart that shows the most common causes of student dropout
a check sheet shows that out of 100 returned items, 50 were damaged, 30 wrong
size, 5 wrong order, 5 no longer wanted
SIPOC diagram (quality management) - ANSWER -High-level, big-picture,
company-wide, diagram that shows whole process
Suppliers
Inputs
Process
Output
Customer
fact-based decision making - ANSWER -decision-making based on collection and
analysis of data.
reduces external bias, fosters trust in plans
Common Cause Variation - ANSWER -Variation that is natural and expected
Special Cause Variation - ANSWER -variation which unexpected and unknown
IRT (Item Response Theory) - ANSWER -model of designing, analyzing and
scoring tests
, Norm-referenced score - ANSWER -a test that compares a student's performance
against a group
i.e. taking a test with the scoring being based on the scores of other students
Criterion referenced Score - ANSWER -a test that compares a student's
performance against a specific criteria
i.e. taking a test that requires 80% in order to pass.
Prevalence - ANSWER -total active cases / total population
the portion of population which is currently infected
Incidence - ANSWER -new cases per capita. most important analytic to determine
vaccine success.
number of new cases of a disease
Cumulative Incidence - ANSWER -total new cases over a defined period
i.e. researcher wants to know how many new cases of Zika virus there were in
Florida during 2016
Ratio (regarding cases in a study) - ANSWER -compares relationship between two
groups
i.e. females are 2x more likely than males to develop alzhiemers
KPI - ANSWER -stats that MEASURE performance. SMART goals follow to
drive improvement.
i.e. a company wants to assess performance regarding customer, revenue growth,
and operating efficiency.
