QUESTIONS AND ANSWERS
Fundamental theorem of arithmetic
A concept that states that any integer greater than 1 is either prime or the product of a
unique set of prime numbers
Multiplicative inverse
The number you multiply by x to get 1
Principal square root
The positive square root of a number
Radicand
the number under the radical sign
Negative square root
The negative square root of a perfect square
Superscript
A symbol written above and immediately left or right of another character
Commutative property
The order of the numbers under the operation does not change the result
Operators
A word or symbol (such as + or -) that indicated an operation between values
Identity property
a) the sum of a number and 0 is the number
b) the product of a number and 1 is the number
Discrete
A collection of numbers whose values are distinct, separate, and unconnected
Radical sign
The symbol which indicates to take a square root of the number that follows
Additive inverse
Changing the sign of a number and adding it to the original number to get an answer
equal to 0
unit cancellation
The act of a unit being crossed out when the unit is in a numerator, and the same unit is
in the denominator of a fraction or a product of fractions.
Terminal decimal
A decimal number that has a finite number of digits.
Conditional proportion
A proportion where one part of a proportion is a variable, or unknown quantity.
Measure of central tendency
A measure that is used to describe an entire set of data (mean, median, mode)
Measures of spread
Variability
When are box plots useful? Why?