WGU D772 CERTIFICATION SCRIPT 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◍ Quartile 1.
Answer: 25th percentile - median of the lower half of the data
◍ Bar Graph.
Answer: Compare actual numbers, good for displaying portions
◍ Sample.
Answer: Smaller group selected from the population (1,000 university
students selected from different schools around the US)
◍ Strata.
Answer: subgroups within a population that share a common characteristics.
◍ Fabricating data sets.
Answer: makes up data w/o conducting experiment
◍ Altering data in existing sets.
Answer: Changing values to support the hypothesis
◍ Five Number Summary.
Answer: minimum, Q1, median, Q3, maximum
◍ Sample Survey.
Answer: Ask individuals to self-report the values of variables.
◍ Self Interest Study.
Answer: Bias when researchers have a personal stake in the outcome of the
study.
◍ Two way table.
Answer: Represents C -> C
◍ Convenience Sample.
, Answer: Individuals are selected based on the convenience of the researches
often right time right place.
◍ Single-blind.
Answer: Only participants are unaware of their groups assignment
◍ Responsive variable.
Answer: Variable which is potentially affected by the explanatory variable
◍ Independent.
Answer: If the knowledge that one occurred does not affect the chance the
other occurs
◍ Symmetric Distribution.
Answer: the right and left sides of the histogram are approximately mirror
images of each other.
◍ Replication.
Answer: Repeating the experiment with a sufficiently large sample size or
reproducing the entire study to confirm previous findings
◍ Histogram.
Answer: Displays quantitative data by grouping it into intervals (can
accommodate large data sets, does not show exact values of points)
◍ Mode.
Answer: Most frequent value
◍ Variables.
Answer: Characteristics or measurements we are interested in studying
◍ Theoretical probability.
Answer: Probability based on comparing the number of possible favorable
outcomes to the number of total possible outcomes
◍ Quantitive Variables.
Answer: variables that can be counted or measured
◍ Quartile 3.
QUESTIONS WITH SOLUTIONS GRADED A+
◍ Quartile 1.
Answer: 25th percentile - median of the lower half of the data
◍ Bar Graph.
Answer: Compare actual numbers, good for displaying portions
◍ Sample.
Answer: Smaller group selected from the population (1,000 university
students selected from different schools around the US)
◍ Strata.
Answer: subgroups within a population that share a common characteristics.
◍ Fabricating data sets.
Answer: makes up data w/o conducting experiment
◍ Altering data in existing sets.
Answer: Changing values to support the hypothesis
◍ Five Number Summary.
Answer: minimum, Q1, median, Q3, maximum
◍ Sample Survey.
Answer: Ask individuals to self-report the values of variables.
◍ Self Interest Study.
Answer: Bias when researchers have a personal stake in the outcome of the
study.
◍ Two way table.
Answer: Represents C -> C
◍ Convenience Sample.
, Answer: Individuals are selected based on the convenience of the researches
often right time right place.
◍ Single-blind.
Answer: Only participants are unaware of their groups assignment
◍ Responsive variable.
Answer: Variable which is potentially affected by the explanatory variable
◍ Independent.
Answer: If the knowledge that one occurred does not affect the chance the
other occurs
◍ Symmetric Distribution.
Answer: the right and left sides of the histogram are approximately mirror
images of each other.
◍ Replication.
Answer: Repeating the experiment with a sufficiently large sample size or
reproducing the entire study to confirm previous findings
◍ Histogram.
Answer: Displays quantitative data by grouping it into intervals (can
accommodate large data sets, does not show exact values of points)
◍ Mode.
Answer: Most frequent value
◍ Variables.
Answer: Characteristics or measurements we are interested in studying
◍ Theoretical probability.
Answer: Probability based on comparing the number of possible favorable
outcomes to the number of total possible outcomes
◍ Quantitive Variables.
Answer: variables that can be counted or measured
◍ Quartile 3.
