WGU C207 OA DATA-DRIVEN DECISION MAKING|100%
VERIFIED AND GRADED A+|QUESTIONS AND ANSWERS
GUARANTEED PASS
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
, Independent Variable - ANSWER-Variable the drives the dependent variable
Range - ANSWER-Difference between the lowest and highest number in a data set. Example:
4,6,9,3,7 Range = 9-3 =6
T-Statistic - ANSWER-Statistic (derived from a sample) used in hypothesis testing. Determines if
2 sample means are significantly different from each other.
Central Limit Theorem - ANSWER-Distribution of average of a large number of independent,
identical, variables will be approximately normal. OR the idea that if a large enough number of
samples is taken, the means of those samples will be normally distributed around the
population mean.
F-Statistic - ANSWER-Value you get when you run an ANOVA test or a regression analysis to find
out if the means between two populations are significantly different.
ANOVA - ANSWER- (Analysis of Variance) - Collection of statistical models used to analyze the
differences among group means, (Three or more groups) Compares samples over different
times. Uses same software as regression, but takes multiple sets of data and tries to find the
difference between the groups. At least three groups of data and sees if there is any statistical
value. Used to determine if there is a significant difference among three or more means.
Linear Regression - ANSWER-Describes data and explains the relationship between one
dependent variable and one more independent variables. Predictive analysis. Linear relationship
between two variables can be measured by its strength
Strong Linear - ANSWER-Bunch around a straight line
Weak Linear - ANSWER-Scattered
VERIFIED AND GRADED A+|QUESTIONS AND ANSWERS
GUARANTEED PASS
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
, Independent Variable - ANSWER-Variable the drives the dependent variable
Range - ANSWER-Difference between the lowest and highest number in a data set. Example:
4,6,9,3,7 Range = 9-3 =6
T-Statistic - ANSWER-Statistic (derived from a sample) used in hypothesis testing. Determines if
2 sample means are significantly different from each other.
Central Limit Theorem - ANSWER-Distribution of average of a large number of independent,
identical, variables will be approximately normal. OR the idea that if a large enough number of
samples is taken, the means of those samples will be normally distributed around the
population mean.
F-Statistic - ANSWER-Value you get when you run an ANOVA test or a regression analysis to find
out if the means between two populations are significantly different.
ANOVA - ANSWER- (Analysis of Variance) - Collection of statistical models used to analyze the
differences among group means, (Three or more groups) Compares samples over different
times. Uses same software as regression, but takes multiple sets of data and tries to find the
difference between the groups. At least three groups of data and sees if there is any statistical
value. Used to determine if there is a significant difference among three or more means.
Linear Regression - ANSWER-Describes data and explains the relationship between one
dependent variable and one more independent variables. Predictive analysis. Linear relationship
between two variables can be measured by its strength
Strong Linear - ANSWER-Bunch around a straight line
Weak Linear - ANSWER-Scattered
