WGU C955 OBJECTIVE ASSESSMENT APPLIED PROBABILITY AND
STATISTICS OA EXAM/ QUESTIONS WITH CORRECT ANSWERS/
LATEST 2024-2025.
Rate - ANS - A ratio that compares two quantities having different units of measure
Proportion - ANS - True statement in which two ratios are equal to each other. Two days are proportional
of they are equivalent.
Conditional proportion - ANS - One part of a proportion is a variable or unknown quantity
Example of discrete data - ANS - Days of the week
Expressions - ANS - A group of symbols such as numbers and operators that has mathematical validity
Commutative - ANS - The order in which the numbers appear in the sum can be reversed
Identity property - ANS - Adding 0 to any number does not change the original number
Additive inverse - ANS - Values that are equally far from 0 on the number line.
Negative - ANS - When multiplying a positive number by a negative number the result is always
Prospective study - ANS - Is a study that's done over time to find results / A study watching for outcomes
during the study period
, 2
Unbalanced response - ANS - Giving more options that are negative than positive options (or vice versa)
which biases the responses towards the more common option
Matched pairs - ANS - Grouping two similar subjects and giving different treatments/procedures to each
in order to compare the differences. For example, having one twin take a medication while the other
twin does not.
Population - ANS - The entire group you are trying to describe or understand.
Positive - ANS - Multiplying a negative number by a negative number results in a positive
Factors - ANS - Integers that evenly divide the initial integer
Prime number - ANS - Positive integer with exactly two positive factors consisting of 1 and itself
Composite number - ANS - Has at least one positive factor other than one and itself
Factorization - ANS - Process of breaking up a composite number into its prime factors
fundamental theorem of arithmetic - ANS - Any integer greater than one is either Prime or the product
of Prime numbers
Discrete data - ANS - Has distinct values, can be counted, had unconnected points (think dots)
Continuous data - ANS - Has values within a range, measured not counted, does not have gaps between
data points (data is connected lines or curves).
Principal square root - ANS - Positive square root of a number
Voluntary sample - ANS - Members of the sample may choose not to respond. Similar to Non Response.
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