EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS
Division Principle of Equality - ANSWER--If both sides of the
equation are divided by the same non-zero number, the result is an
equivalentequation.
Symmetry - ANSWER--The quality of the data having the same shape on
both sides of the mean.
Contingency Table - ANSWER--A table that contains frequency counts
for two categorical variables. Also see Two-Way Frequency Table.
Correlation - ANSWER--An observed relationship between two
quantitative variables. While this is most commonly a linear
relationship, it does not need to be. Not that observing a relationship
does NOT imply that there is a meaningful causal link between the
variables.
Sample - ANSWER--The small quantity of data gathered about a
population that will represent the population as a whole.
What is the Fahrenheit equivalent for a patient's room that needs to be
kept at 25 degrees Celsius?
A. 70°
B. 75°
,C. 77°
D. 80° - ANSWER--C. 77°
Multiplicative Inverse - ANSWER--The multiplicative inverse of a
number x is the number you must multiply x by to get 1. For example,
5and 1/5 are multiplicative inverses.
Terminal Decimal - ANSWER--A decimal number that has a finite
number of digits.
Slope-Intercept Form - ANSWER--A common format that a linear
equation can take that is helpful for graphing purposes. It is of the
formy = mx + b, where m is the slope of the line and b is the y-
intercept.
Given the following set of numbers: 3.3, -2.3, -16, 25. What are the
square roots of the whole number?
A. +/- 2.3
B. +/- 3.3
C. +/- 4
, D. +/- 5 - ANSWER--D. +/- 5
Composite Number - ANSWER--A number with more factors that
justone and itself.
Equivalent Fractions - ANSWER--Different fractions that represent
thesame value.
X- Axis - ANSWER--The horizontal line that passes through the origin
ona coordinate plane.
Qualitative Data - ANSWER--Non-numeric information based on
somequality or characteristic.
No Correlation - ANSWER--There is no apparent overall trend
between the two variables. If the correlation coefficient is 0, this only
rules out a linear trend. There could be a non-linear or curvilinear
trend.
Extrapolate - ANSWER--Using information from a data set to make
predictions about data outside of the original set.
Event - ANSWER--An outcome, or set of outcomes, whose chance of
occurrence can be represented with a probability.