(Objective Assessment Study Material) –
Complete exam-aligned Q&A and key
concept summaries
Introduction:
This document covers the essential topics from the WGU C784
Applied Healthcare Statistics Objective Assessment, including
definitions, formulas, worked examples, and multiple-choice
questions with correct answers. It spans core statistical
concepts such as probability, regression, fractions, operations,
study types, graphical displays, and numerical summaries. The
content functions as a comprehensive review tool and is
aligned with the material commonly assessed in the OA,
making it suitable for exam preparation and quick concept
reinforcement.
Exam Questions and Answers:
Given the following expression: 4 + 7 × (6 - 3)2. What is the
answer using proper order of operations?
A. 25
B. 46
,C. 67
D. 99 -Answer:-C. 67
Multi-Step Expression -Answer:-An expression or equation
with more than two values and two or more operators that
requires multiple steps to be solved.
Improper Fraction -Answer:-A fraction where the number in
the numerator is more than the number in the denominator.
Y-Intercept -Answer:-The y-value of the point at which a line
intersects with the y-axis.
Check Sheet -Answer:-A structured form or table that allows
data to be collected by marking how often an event has
occurred in an certain interval.
Linear -Answer:-An expression or equation of degree 1.
Least Squares -Answer:-A technique for finding the regression
line.
, Sample Size -Answer:-The number of different outcomes for an
experiment.
Given the following expression: 5 x (30 - 27)2 + 4. What is the
correct answer using the proper order of operations?
A. 34
B. 49
C. 65
D. 81 -Answer:-B. 49
Exponents -Answer:-Sometimes called a power, it is a quantity
that represents repeated multiplication.
Least Common Multiple (LCM) -Answer:-The smallest number
in value that is a multiple of two or more numbers.
Order of Operations -Answer:-A set of rules that defines the
order in which Mathematical operations should be performed.
Numerical Summary -Answer:-A number used to describe a
specific characteristic about a data set.