the distance a number is away from zero
Any example that proves a statement false
A variable that provides the output values of a function (goes on the y-axis)
A variable that provides the input values of a function (goes on the x-axis)
A mathematical sentence that uses an equal sign
A mathematical sentence composed of numbers, variables, and/or operations. Does NOT have an equal sign.
A relation that assigns exactly one output for each input.
Counting Numbers: 1,2,3,4, etc.
Natural numbers AND 0. 0,1,2,3...
Whole numbers and their opposites: -3,-2,-1,0,1,2,3...
Numbers that can be written as a fraction of integer/integer. As a decimal, a rational number ends or repeats. Examples: 1/3, -2.5, 16
Numbers that never end or repeat when written as a decimal. Examples: pi, the square root of 2...
any number that is rational OR irrational
Measures of central tendency
Mean, Median, and Mode. They are used to organize, summarize, and find the "center" of data.
The sum of the numbers divided by the number of terms
The middle of a set of data that is ordered from least to greatest.
The data item that occurs the most often
The difference between the highest and lowest data terms.
The opposite of a number
A number that multiplies a variable. For example, the coefficient of -5x is -5.
Complement of an Event
All possible outcomes that are NOT in the event.
A number that has no variable
Two events in which the occurrence of one event affects the probability of the second event.
Two events in which the occurrence of one event does not affect the probability of the second event.
a(b + c) = ab + ac
a(b - c) = ab - ac
In theory, the probability that an event SHOULD happen. It is the ratio of the number of favorable outcomes to the total number of outcomes if all outcomes have the same chance of happening.
In an experiment, what DOES happen... The ratio of the number of times that an event actually happens to the number of times that the experiment is done.
a number, a variable, or the product of number(s) and variable(s). Example: 5, y, -3x
terms that have the same variable and the same power
Example: the multiplicative inverse of 3/2 is -2/3
a ratio of the favorable outcomes to the unfavorable outcomes for an event
how likely it is that an event will occur
Probability is formally written as P(event)
When you multiply a number and its reciprocal, you get 1.
All possible outcomes of an event
Example: When tossing two coins, the sample space is HH, HT, TH, and TT.