WGU C207 Data Driven Decision Making
Z-Score Ans- 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 Ans- How far a set of numbers are spread. Used for Data set. Hint ...
WGU C207 Data Driven Decision Making
Z-Score Ans- 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 Ans- How far a set of numbers are spread. Used for Data set. Hint Words = Risk, spread.
Multiplication Rule Ans- 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 Ans- 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 Ans- How many combinations can be made.
Bayes Theorem Ans- 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 Ans- Number halfway into the data set. Hint Word: Typical
Mode Ans- Number that occurs most often in a data set.
Mean Ans- Average. Add all numbers and divide.
Standard Deviation Ans- How spread out the numbers are. Square root of the variance.
, Pareto Chart Ans- 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 Ans- Shows the causes of a specific event.
Check Sheet Ans- Collect data in real time.
Control Chart Ans- Determines whether a process should undergo a formal exam for quality.
Histogram Ans- 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 Ans- A graphic that uses dots to show relationships or correlations between variables
Flow/Run Chart Ans- Shows the workflow process
Bar Chart Ans- Graph of schedule-related info. Example: Measures how many people are from each
state.
Box - Plot Ans- 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 Ans- Dependent upon the Independent variable
Independent Variable Ans- Variable the drives the dependent variable
Range Ans- Difference between the lowest and highest number in a data set. Example: 4,6,9,3,7 Range =
9-3 =6
T-Statistic Ans- Statistic (derived from a sample) used in hypothesis testing. Determines if 2 sample
means are significantly different from each other.
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