EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER
©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
WGU C207 Data Driven Decision Making
Exam Study Guide
Z-Score - Answer✔✔-Data points only. Measurement of a scores relationship to the
mean. A statistical measure that indicates the number of standard deviations a data
point is from its mean.
Variance - Answer✔✔-How far a set of numbers are spread. Used for Data set. Hint
Words = Risk, spread.
Multiplication Rule - Answer✔✔-A method for finding the probability that both of two
events occur. When the probabilities of multiple events are multiplied together to
determine the likelihood of all of the events happening. Word Hint: And
Addition Rule - Answer✔✔-A method for finding the probability that either or both of
two events occur. When two events, A and B, are mutually exclusive, the probability that
A or B will occur is the sum of the probability of each event. Word Hint: Either/or.
Combination Rule - Answer✔✔-How many combinations can be made.
Bayes Theorem - Answer✔✔-Probability of an event , based on conditions that might
be related to the event. Conditional probability. A formula that calculates conditional
probabilities. Important for understanding how new information affects the probabilities
of outcomes. Word Hint: Given that.
Median - Answer✔✔-Number halfway into the data set. Hint Word: Typical
Mode - Answer✔✔-Number that occurs most often in a data set.
1/10
, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER
©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
Mean - Answer✔✔-Average. Add all numbers and divide.
Standard Deviation - Answer✔✔-How spread out the numbers are. Square root of the
variance.
Pareto Chart - Answer✔✔-Contains both line and bar graphs. Ordered by frequency
of occurrence that shows how many results were generated by each identified cause.
Cause and Effect Diagram - Answer✔✔-Shows the causes of a specific event.
Check Sheet - Answer✔✔-Collect data in real time.
Control Chart - Answer✔✔-Determines whether a process should undergo a formal
exam for quality.
Histogram - Answer✔✔-Graph representing the distribution of numeric data.
Measures how continuous data is distributed over various ranges. Example: Displays
how many people fall in various ranges of height.
Scatter Diagram - Answer✔✔-A graphic that uses dots to show relationships or
correlations between variables
Flow/Run Chart - Answer✔✔-Shows the workflow process
Bar Chart - Answer✔✔-Graph of schedule-related info. Example: Measures how
many people are from each state.
Box - Plot - Answer✔✔-Used while studying the composition of a data set to examine
the distribution (non - parametric data) uses median and percentiles rather than
averages. (Look for Spread and Median.)
Dependent Variable - Answer✔✔-Dependent upon the Independent variable
2/10
©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
WGU C207 Data Driven Decision Making
Exam Study Guide
Z-Score - Answer✔✔-Data points only. Measurement of a scores relationship to the
mean. A statistical measure that indicates the number of standard deviations a data
point is from its mean.
Variance - Answer✔✔-How far a set of numbers are spread. Used for Data set. Hint
Words = Risk, spread.
Multiplication Rule - Answer✔✔-A method for finding the probability that both of two
events occur. When the probabilities of multiple events are multiplied together to
determine the likelihood of all of the events happening. Word Hint: And
Addition Rule - Answer✔✔-A method for finding the probability that either or both of
two events occur. When two events, A and B, are mutually exclusive, the probability that
A or B will occur is the sum of the probability of each event. Word Hint: Either/or.
Combination Rule - Answer✔✔-How many combinations can be made.
Bayes Theorem - Answer✔✔-Probability of an event , based on conditions that might
be related to the event. Conditional probability. A formula that calculates conditional
probabilities. Important for understanding how new information affects the probabilities
of outcomes. Word Hint: Given that.
Median - Answer✔✔-Number halfway into the data set. Hint Word: Typical
Mode - Answer✔✔-Number that occurs most often in a data set.
1/10
, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER
©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
Mean - Answer✔✔-Average. Add all numbers and divide.
Standard Deviation - Answer✔✔-How spread out the numbers are. Square root of the
variance.
Pareto Chart - Answer✔✔-Contains both line and bar graphs. Ordered by frequency
of occurrence that shows how many results were generated by each identified cause.
Cause and Effect Diagram - Answer✔✔-Shows the causes of a specific event.
Check Sheet - Answer✔✔-Collect data in real time.
Control Chart - Answer✔✔-Determines whether a process should undergo a formal
exam for quality.
Histogram - Answer✔✔-Graph representing the distribution of numeric data.
Measures how continuous data is distributed over various ranges. Example: Displays
how many people fall in various ranges of height.
Scatter Diagram - Answer✔✔-A graphic that uses dots to show relationships or
correlations between variables
Flow/Run Chart - Answer✔✔-Shows the workflow process
Bar Chart - Answer✔✔-Graph of schedule-related info. Example: Measures how
many people are from each state.
Box - Plot - Answer✔✔-Used while studying the composition of a data set to examine
the distribution (non - parametric data) uses median and percentiles rather than
averages. (Look for Spread and Median.)
Dependent Variable - Answer✔✔-Dependent upon the Independent variable
2/10
