Statistics and Probability Lesson 1 Review: Random Variables and Probability Distributions

Random Sampling: Every unit of the population has the same probability of being included in the sample. Non-Random Sampling: Every unit of the population does not have the same probability of being included in the sample.

The teacher asking students to write their names on a piece of paper, placing them in a box, and then randomly choosing a student for an oral recitation.

Convenience Sampling, Quota Sampling, Purposive Sampling, Snowball Sampling

<p>To calculate the sample size needed based on the population size and the margin of error.</p> Signup and view all the answers

<p>n = Sample size, N = Population size, e = Margin of error</p> Signup and view all the answers

<p>123</p> Signup and view all the answers

<p>A list, a table, a graph, or a formula showing all the possible values of a discrete random variable together with their corresponding properties.</p> Signup and view all the answers

<p>Between 0 and 1, inclusive.</p> Signup and view all the answers

<p>The expected value of X, also referred to as the mean of X.</p> Signup and view all the answers

<p>The dispersion or the variability of the distribution.</p> Signup and view all the answers

<p>The variance can be computed using the formula.</p> Signup and view all the answers

<p>The sum of all probabilities in a probability distribution should be equal to 1.</p> Signup and view all the answers

<p>A subset of individuals from a larger population chosen so that every individual has an equal chance of being selected.</p> Signup and view all the answers

<p>To clearly identify the group of people, objects, or events with similar characteristics that you want to study.</p> Signup and view all the answers

<p>A list of all the individuals or items in the population from which the sample will be selected.</p> Signup and view all the answers

<p>By deciding on the size of the sample needed to draw meaningful conclusions.</p> Signup and view all the answers

<p>Analyzing the collected data using appropriate statistical methods.</p> Signup and view all the answers

<p>Unbiased representation, where every member of the population has an equal chance of being selected.</p> Signup and view all the answers

<p>An experiment that can be repeated numerous times under the same conditions with independent results.</p> Signup and view all the answers

<p>The result of a random experiment.</p> Signup and view all the answers

<p>The set of possible outcomes of a random experiment.</p> Signup and view all the answers

<p>A function that associates a numerical value to every outcome of a random experiment.</p> Signup and view all the answers

<p>Discrete random variables have a finite or countably infinite number of values, while continuous random variables can assume an infinite number of values, including decimal or fractional values.</p> Signup and view all the answers

<p>The number of phones produced by a company.</p> Signup and view all the answers

<p>To avoid prejudice and obtain representative data</p> Signup and view all the answers

<p>Each selected cluster is subjected to additional sample in addition to the first cluster sampling.</p> Signup and view all the answers

<p>Age Groups</p> Signup and view all the answers

<p>To break a population into smaller groups based on common features or attributes.</p> Signup and view all the answers

<p>Because it involves breaking the population into smaller groups (strata) based on certain characteristics.</p> Signup and view all the answers

<p>Two-Stage Sampling selects a subsample cluster from the selected, while Multi-Stage Sampling adds additional samples to each selected cluster.</p> Signup and view all the answers