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# Quiz4 Vocabulary

### Terrell-QUIZ4: Terms from V&P, Probability and Integers units. (1/06)

TERMDEFINITIONEXAMPLE
VARIABLE A letter that represents a quantity or quantities. x, y, n, t
COORDINATE GRAPH (a.k.a. scatter plot) A graph of a collection of measurement data in the form of ordered pairs (x,y).   (PICTURE: see vocabulary log. Be sure to label the axes.)
INDEPENDENT VARIABLE A variable whose value determines the value of another variable. (i.e. the input) For the example, the cost of a long-distance phone call (c) vs. how long you talk (t), t would be the independent variable.
DEPENDENT VARIABLE A variable whose quantity is based upon a rule applied to an input value. (i.e. the output) For the example, the cost of a long-distance phone call (c) vs. how long you talk (t), c would be the dependent variable.
SAMPLE SPACE The set of all possible outcomes of an event. S = {CF, CP, CO, CC, BF, BP, BO, BC}
SET NOTATION A formal way of listing all the elements (or members) of a group of data. {1, 2, 3, 4, 5} or {measles, mumps, chicken pox}
TREE DIAGRAM A counting display that shows all the ways an event can occur. (PICTURE: see vocabulary log. Be sure to provide a key, if necessary.)
FUNDAMENTAL COUNTING PRINCIPLE For a situation with any number of choices, multiply the number of options for each choice times each other to get the total number of possibilities. For 3 breads, 4 meats, 4 condiments, 5 chips: #(S) = 3*4*4*5 = 240 possibilities
PROBABILITY A measure of the likelihood that an event will happen. It is calculated by dividing the number of times the event could happen by the total number of possibilities. P(rolling 3 on 6-sided die) = 1/6
POSITIVE NUMBERS The set of all numbers that are greater than 0 (to the right of 0 on the number line). 3, 8.01, 5/6, 12.325%
NEGATIVE NUMBERS The set of all numbers that are less than 0 (to the left of 0 on the number line). -2, -5.672, -1/2, -29.7%
OPPOSITES Numbers that are the same distance from 0, but are on the different sides of 0 on the number line. -5 and 5; 2 and -2; .8 and -.8
COUNTING NUMBERS (a.k.a. natural numbers, positive integers) The set of all non-partial numbers greater than 0. 1, 2, 3, 4, 5, ...
WHOLE NUMBERS (a.k.a. nonnegative integers) The set of all non-partial numbers greater than and including 0. 0, 1, 2, 3, 4, 5, ...
INTEGERS The set of all whole numbers and their opposites. ..., -3, -2, -1, 0, 1, 2, 3, ...
RATIONAL NUMBERS The set of all numbers that can be expressed as one integer divided by another. (i.e. fractions) .29, 3, 2/3, 0, 15%
IRRATIONAL NUMBERS The set of all numbers that cannot be expressed as fractions. These numbers do not end (“non-terminating”) and do not repeat. pi, the square root of any prime number, .232233222333...
REAL NUMBERS The set of all numbers that we encounter in life. -3, 29.4567, the square root of 59, pi
Created by: terrellmath

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