PROBABILITY AND STATISTICS
OA 2024\2025LATEST VERSION | INCLUDES 2
RECENTLY TESTED EXAMS, A TEST BANK AND A
STUDY GUIDE | ACCURATE AND EXPERT VERIFIED
FOR GUARANTEED PASS | GRADED A
Horizontal Asymptote - ✔✔ANSW✔✔..a horizontal line that the curve approaches but
never reaches
inequality - ✔✔ANSW✔✔..A mathematical sentence that shows the relationship
between quantities that are not equivalent
inflection point - ✔✔ANSW✔✔..The point on a curve at which the curves concavity
changes; also called the point of inflection
Input-output pairs - ✔✔ANSW✔✔..The representation of an input value and an output
value as an ordered pair, written (x,y)
Interpolation - ✔✔ANSW✔✔..A method of inserting new data points in the range of a
known set of data points
Interrelated causality - ✔✔ANSW✔✔..An output produced by the interaction of several
connected, or related, inputs
interval - ✔✔ANSW✔✔..A range of numbers that include all the real numbers between
its endpoints
inverse - ✔✔ANSW✔✔..opposite
,inverse function - ✔✔ANSW✔✔..a function that "undoes" what the original function does
least-squares regression method - ✔✔ANSW✔✔..uses all of the data to separate a
mixed cost into its fixed and variable components
Which choice is a variable?
A.The number of states in the United States of America
B.The cost of your daily newspaper
C.The amount a teenager makes babysitting
D.Your shoe size - ✔✔ANSW✔✔..C
Which choice is a variable?
A.The operating system on your phone
B.The amount a babysitter charges per hour
C.The name of the largest mountain range in the United States
D.The colors and styles of your shoes - ✔✔ANSW✔✔..D
Which choice is a quantitative variable?
A. S, representing the number of regular weekly shipping deliveries your company's
trucks make
B. P, representing the monthly profit based on the number of customers who needed
plumbing services
C. R, representing the monthly rent for your company's office building
D. M, representing the federal minimum wage - ✔✔ANSW✔✔..B
In a lawn-mowing business, the amount of time an employee spends mowing a lawn
depends on the size of the lawn. It might also depend on some other factors.
Which choice represents a qualitative variable in this lawn-mowing business?
A. G, representing the amount of gas needed to mow a given lawn
B. W, representing the number of hours the employee spends working each day
C. H, representing the hilliness of the lawn
D. M, representing the maximum amount of lawn that a given mower can complete per
hour - ✔✔ANSW✔✔..C
Which variable is related to the variable temperature?
A. Pen sales
B. Computer sales
C. Hot chocolate sales
D. Book sales - ✔✔ANSW✔✔..C
, The number of years someone regularly deposits money in a savings account is related
to the amount of money in the account. T/F - ✔✔ANSW✔✔..T
The amount of food prepared for a catered event depends on the number of people
attending.
Which variable is the independent variable?
A. The amount of food prepared
B. The number of people attending - ✔✔ANSW✔✔..B
You own a car wash that charges $10 for each car that goes through. If you wash 50
cars a day, your revenue is $10×50=$500. If you only wash 20 cars a day, your revenue
is $10×20=$200.
Which variable is the independent variable?
A. Your company's revenue
B. The number of cars washed - ✔✔ANSW✔✔..B
Discrete data - ✔✔ANSW✔✔..Has distinct values, can be counted, had unconnected
points (think dots)
Continuous data - ✔✔ANSW✔✔..Has values within a range, measured not counted,
does not have gaps between data points (data is connected lines or curves).
Example of discrete data - ✔✔ANSW✔✔..Days of the week
Expressions - ✔✔ANSW✔✔..A group of symbols such as numbers and operators that
has mathematical validity
Commutative - ✔✔ANSW✔✔..The order in which the numbers appear in the sum can
be reversed
Identity property - ✔✔ANSW✔✔..Adding 0 to any number does not change the original
number
Additive inverse - ✔✔ANSW✔✔..Values that are equally far from 0 on the number line.
Negative - ✔✔ANSW✔✔..When multiplying a positive number by a negative number the
result is always