C207 OA EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+
a type of continuous data
i.e. date, time, degrees
Ratio Data (data measuring levels) - ANSWERS-0 actually
means nothing, not just a data point
a type of continuous data
i.e. money, height weight
Discrete Data - ANSWERS-Data that can only take on whole
values and has clear boundaries
i.e. 4, 7, 8 in a preset range of 1-100
,Ordinal data (data measuring levels) - ANSWERS-data is
ordered based on quality
a type of discrete data
i.e. in blackbelt data, level "3" is higher quality than "1"
gold, silver, and bronze medals
Nominal / Categorical Data (data measuring levels) -
ANSWERS-data is assigned a category/label for
identification and grouping purposes
a type of discrete data
i.e. males are assigned "0" and females "1"
potential quality errors: categories can be misspelled
Attribute Data - ANSWERS-Data that shows whether a result
meets a requirement or not (yes/no, pass/fail).
,Davenport-Kim Three-Stage Model - ANSWERS-1. Frame the
problem - recognize problem and review previous findings.
2. Solve the problem - modeling, collection, analysis
3. Communicate results - tailor to audience, use visuals,
show results.
Reliability of Data - ANSWERS-data that is consistent (but
not necessarily accurate)
i.e. a thermometer reads 20, 21, 21, 20, 20, 19, 19, 21, 20, 19
a test given to a student consistently shows similar scores
Validity of Data - ANSWERS-data that is accurate
requires sample selection to be adequate size and random.
i.e. a thermometer consistently reads from 20-25 F but the
water isn't even frozen (not valid)
, Data Error Types - ANSWERS-Omission - data being left out,
missed, forgotten. sorting in spreadsheet can help to
identify
Out of Range - data that doesn't fit the expected, viable
range. sorting in spreadsheet can help to identify outliers.
Entry/input errors - typos, miscommunications, illegible
handwriting
Systematic Error - ANSWERS-error will cause other errors
until fixed
i.e. a tire pressure sensor breaks and stops functioning,
resulting in omission errors until fixed
a scale is calibrated prior to being used in order to reduce
systemic error
Random Error / Unpredictable Error - ANSWERS-error that
does not consistently repeat due to system flaw and
therefore doesn't need fix/adjustment. aka its "self fixing".
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+
a type of continuous data
i.e. date, time, degrees
Ratio Data (data measuring levels) - ANSWERS-0 actually
means nothing, not just a data point
a type of continuous data
i.e. money, height weight
Discrete Data - ANSWERS-Data that can only take on whole
values and has clear boundaries
i.e. 4, 7, 8 in a preset range of 1-100
,Ordinal data (data measuring levels) - ANSWERS-data is
ordered based on quality
a type of discrete data
i.e. in blackbelt data, level "3" is higher quality than "1"
gold, silver, and bronze medals
Nominal / Categorical Data (data measuring levels) -
ANSWERS-data is assigned a category/label for
identification and grouping purposes
a type of discrete data
i.e. males are assigned "0" and females "1"
potential quality errors: categories can be misspelled
Attribute Data - ANSWERS-Data that shows whether a result
meets a requirement or not (yes/no, pass/fail).
,Davenport-Kim Three-Stage Model - ANSWERS-1. Frame the
problem - recognize problem and review previous findings.
2. Solve the problem - modeling, collection, analysis
3. Communicate results - tailor to audience, use visuals,
show results.
Reliability of Data - ANSWERS-data that is consistent (but
not necessarily accurate)
i.e. a thermometer reads 20, 21, 21, 20, 20, 19, 19, 21, 20, 19
a test given to a student consistently shows similar scores
Validity of Data - ANSWERS-data that is accurate
requires sample selection to be adequate size and random.
i.e. a thermometer consistently reads from 20-25 F but the
water isn't even frozen (not valid)
, Data Error Types - ANSWERS-Omission - data being left out,
missed, forgotten. sorting in spreadsheet can help to
identify
Out of Range - data that doesn't fit the expected, viable
range. sorting in spreadsheet can help to identify outliers.
Entry/input errors - typos, miscommunications, illegible
handwriting
Systematic Error - ANSWERS-error will cause other errors
until fixed
i.e. a tire pressure sensor breaks and stops functioning,
resulting in omission errors until fixed
a scale is calibrated prior to being used in order to reduce
systemic error
Random Error / Unpredictable Error - ANSWERS-error that
does not consistently repeat due to system flaw and
therefore doesn't need fix/adjustment. aka its "self fixing".
