Algebra 2 Chapter 11 Probability and Statistics

An arrangement of items in a particular order.

n!=n(n-1)(n-2)...32*1. 0!=1

<p>A selection in which order does not matter.</p> Signup and view all the answers

<p>P(event)=number of times the event occurs ÷ number of trials</p> Signup and view all the answers

<p>A model of the event.</p> Signup and view all the answers

<p>The set of all possible outcomes to an experiment or activity.</p> Signup and view all the answers

<p>When each outcome in a sample space has the same chance of occurring.</p> Signup and view all the answers

<p>P(A)=m/n</p> Signup and view all the answers

<p>When the occurrence of one event affects how a second event can occur.</p> Signup and view all the answers

<p>When the occurrence of one event does not affect how a second event can occur.</p> Signup and view all the answers

<p>A function that gives the probability of each outcome in a sample space.</p> Signup and view all the answers

<p>The theoretical probability of rolling each number on a standard number cube is the same.</p> Signup and view all the answers

<p>When you can assign numerical values to events.</p> Signup and view all the answers

<p>The probability of events occurring with values that are less than or equal to a given value.</p> Signup and view all the answers

<p>The probability that an event, B, will occur given that another event, A, has already occurred.</p> Signup and view all the answers

<p>A two-way frequency table that contains data from two different categories.</p> Signup and view all the answers

<p>A model used to assign probabilities to outcomes of a chance process.</p> Signup and view all the answers

<p>Indicates the middle of the data set; the mean, median, and mode are the most common measures.</p> Signup and view all the answers

<p>Sum of the data values ÷ number of data values.</p> Signup and view all the answers

<p>The middle value for an odd number of data values; the mean of the two middle values for an even number of data values.</p> Signup and view all the answers

<p>The most frequently occurring value.</p> Signup and view all the answers

<p>Two modes in a data set, in which case the modes are probably not statistically useful.</p> Signup and view all the answers

<p>A value that is substantially different from the rest of the data in a set.</p> Signup and view all the answers

<p>The difference between the greatest and least values.</p> Signup and view all the answers

<p>The values that are separated into four parts.</p> Signup and view all the answers

<p>A way to display data that uses quartiles to bound the center box and the minimum and maximum values to form the whiskers.</p> Signup and view all the answers

<p>A number from 0 to 100 that you can associate with a value x from a data set.</p> Signup and view all the answers

<p>Describes how the data in a data set are spread out.</p> Signup and view all the answers

<p>In a data set, sum of the differences between each value x and the mean divided by the n values in the data set.</p> Signup and view all the answers

<p>In a data set, the square root of the sum of the differences between each value x and the mean divided by the n values in the data set.</p> Signup and view all the answers

<p>Select any members of the population who are conveniently and readily available.</p> Signup and view all the answers

<p>Select only members of the population who volunteer for the sample.</p> Signup and view all the answers

<p>Order the population in some way, and then select from it at regular intervals.</p> Signup and view all the answers

<p>All members of the population are equally likely to be chosen.</p> Signup and view all the answers

<p>A systematic error introduced by the sampling method.</p> Signup and view all the answers

<p>You measure or observe members of a sample in such a way that they are not affected by the study.</p> Signup and view all the answers

<p>You divide the sample into two groups, imposing a treatment on one group and not the other group.</p> Signup and view all the answers

<p>You ask every member of the sample a set of questions.</p> Signup and view all the answers

<p>An experiment that has a fixed number of trials, each trial has two possible outcomes, the trials are independent, and the probability of each outcome is constant throughout the trials.</p> Signup and view all the answers

<p>With n repeated independent trials (p+q=1), the probability of x successes in the n trials can be found by a specific formula.</p> Signup and view all the answers

<p>A finite number of possible events or values.</p> Signup and view all the answers

<p>The events can be any value in an interval of real numbers.</p> Signup and view all the answers

<p>Data that vary randomly from the mean.</p> Signup and view all the answers

<p>Helps you find the interval in which the mean of the population is likely to be.</p> Signup and view all the answers

<p>A range of values so defined that there is a specified probability that the value of a parameter lies within it.</p> Signup and view all the answers

<p>An important measure for normally distributed data which indicates the number of standard deviations a value lies above or below the mean of a population.</p> Signup and view all the answers

<p>The difference between the third and first quartiles.</p> Signup and view all the answers

<p>Two events that cannot happen at the same time where P(A and B)=0.</p> Signup and view all the answers

<p>A part of a population.</p> Signup and view all the answers