C207 Data-Driven Decision Making FINAL EXAM 2024
LATEST GRADED A+ WGU CERTIFIED EXAM
There are two types of statistics (Analytics) - ANSWER: 1. Descriptive
2. Inferential
Descriptive statistics are used to _________ - ANSWER: Inform; Explain
Inferential statistics are used to ______ - ANSWER: Predict/Show trend
Name the 4 levels of measurement - ANSWER: 1. NOIR (Nominal)
2. Ordinal
3. Interval
Ratio
Continuous data with unique zero point (Level of Measurement) - ANSWER: Ratio
Orders data at EQUAL distance apart (Level of Measurement) - ANSWER: Interval
Place quantitative objects in some kind of order (Level of Measurement) - ANSWER:
Ordinal
Identify, Group, or Categorize (Level of Measurement) - ANSWER: Nominal
Outliers create this type of error - ANSWER: Out-of-Range
Unpredictable error/No correlation - ANSWER: Random Error
Error may occur from missing data. (EX: Space not filled in); Distorted results -
ANSWER: Omission Error
This error repeats itself; Skewed results - ANSWER: Systematic Error
What is the process of quality control? - ANSWER: To reduce and minimize errors
All variable measurements and manipulations are under the researcher's control
(Type of Studies) - ANSWER: Experimental Study
Used when impractical or impossible to control the conditions of the study (Type of
Studies) - ANSWER: Observational Study
Participants are not told if they are in the treatment group or control group -
ANSWER: Blind Study
The procedure the researcher applies to each subject - ANSWER: Treatment
, The treatment allocator or the participants do NOT know who is in the treatment
group or control group - ANSWER: Double blind study
Questions favor an outcome, or the interviewer ask questions that favor an outcome
(bias) - ANSWER: Information Bias
The average outcome (payoff) when the future includes scenarios that may or may
not happen - ANSWER: Expected Monetary Value (EMV)
Observation points that are distant form other observations; Can be included or
excluded in analysis (causes skewness) - ANSWER: Outliers
Bias that occurs from not selecting a random sample - ANSWER: Measurement bias
Bias introduced because respondents believe it will be beneficial if selected -
ANSWER: Conscious bias
Middle score for a set of data (Descriptive Statistic Measurement) - ANSWER:
MEDIAN
Tells us the number of standard deviations a data point is from the mean - ANSWER:
Z-SCORE
If the average is the same for two groups, what will determine their difference? -
ANSWER: VARIANCE (Standard Deviation)
The spread of data in a sample. How far the data points are from the mean. -
ANSWER: Standard Deviation
Measure of central tendency that is influenced by the size of the values in a data set;
Is not affected by skewness - ANSWER: MEAN
Each of the four quartile group a population can be divided - ANSWER: Quartiles
Measures the difference between the 3rd and 1st quartile; Must be ordered from
lowest to highest value - ANSWER: IQR (Inter-quartile range)
Is used to study the composition of a data set and examine the distribution -
ANSWER: BOX PLOT
Scenario: There are 6 toll booth to enter the highway. What probability does each
tool boot worker have of getting the next customer? - ANSWER: 1 customer and 6
booths = 1/6 or 16.7%
The order you pick your sample in does not matter - ANSWER: Combination
LATEST GRADED A+ WGU CERTIFIED EXAM
There are two types of statistics (Analytics) - ANSWER: 1. Descriptive
2. Inferential
Descriptive statistics are used to _________ - ANSWER: Inform; Explain
Inferential statistics are used to ______ - ANSWER: Predict/Show trend
Name the 4 levels of measurement - ANSWER: 1. NOIR (Nominal)
2. Ordinal
3. Interval
Ratio
Continuous data with unique zero point (Level of Measurement) - ANSWER: Ratio
Orders data at EQUAL distance apart (Level of Measurement) - ANSWER: Interval
Place quantitative objects in some kind of order (Level of Measurement) - ANSWER:
Ordinal
Identify, Group, or Categorize (Level of Measurement) - ANSWER: Nominal
Outliers create this type of error - ANSWER: Out-of-Range
Unpredictable error/No correlation - ANSWER: Random Error
Error may occur from missing data. (EX: Space not filled in); Distorted results -
ANSWER: Omission Error
This error repeats itself; Skewed results - ANSWER: Systematic Error
What is the process of quality control? - ANSWER: To reduce and minimize errors
All variable measurements and manipulations are under the researcher's control
(Type of Studies) - ANSWER: Experimental Study
Used when impractical or impossible to control the conditions of the study (Type of
Studies) - ANSWER: Observational Study
Participants are not told if they are in the treatment group or control group -
ANSWER: Blind Study
The procedure the researcher applies to each subject - ANSWER: Treatment
, The treatment allocator or the participants do NOT know who is in the treatment
group or control group - ANSWER: Double blind study
Questions favor an outcome, or the interviewer ask questions that favor an outcome
(bias) - ANSWER: Information Bias
The average outcome (payoff) when the future includes scenarios that may or may
not happen - ANSWER: Expected Monetary Value (EMV)
Observation points that are distant form other observations; Can be included or
excluded in analysis (causes skewness) - ANSWER: Outliers
Bias that occurs from not selecting a random sample - ANSWER: Measurement bias
Bias introduced because respondents believe it will be beneficial if selected -
ANSWER: Conscious bias
Middle score for a set of data (Descriptive Statistic Measurement) - ANSWER:
MEDIAN
Tells us the number of standard deviations a data point is from the mean - ANSWER:
Z-SCORE
If the average is the same for two groups, what will determine their difference? -
ANSWER: VARIANCE (Standard Deviation)
The spread of data in a sample. How far the data points are from the mean. -
ANSWER: Standard Deviation
Measure of central tendency that is influenced by the size of the values in a data set;
Is not affected by skewness - ANSWER: MEAN
Each of the four quartile group a population can be divided - ANSWER: Quartiles
Measures the difference between the 3rd and 1st quartile; Must be ordered from
lowest to highest value - ANSWER: IQR (Inter-quartile range)
Is used to study the composition of a data set and examine the distribution -
ANSWER: BOX PLOT
Scenario: There are 6 toll booth to enter the highway. What probability does each
tool boot worker have of getting the next customer? - ANSWER: 1 customer and 6
booths = 1/6 or 16.7%
The order you pick your sample in does not matter - ANSWER: Combination
