# Basic Probability & Statistics Flashcards

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When arranged in numerical order, the middle value of a data set

If two values in the middle, the median is the average of the two values

The average of a data set

To calculate: add together the data set values, and divide by the total number of values

Dependent events

Total number of candies: 10 + 12 + 15 = 37

Probability of choosing vanilla candy: 10/37

Probability of then choosing chocolate candy: 12/36

(10/37) * (12/36) = 120/1332 = 10/111

Probability of sunglasses - probability of hat and sunglasses = probability of only sunglasses

5/7 - 3/7 = 2/7 = 0.29 = 29%

Dependent events

Probability of 1st queen = 4/52

P(2nd queen) = 3/51

P(3rd queen) = 2/50

P(4th queen) = 1/49

(4/52) * (3/51) * (2/50) * (1/49) = 24/6,497,400 = 1/270,725

Probability of rolling a one: 1/6

Independent events, so probability = (1/6) * (1/6) * (1/6) = 1/216

P(*A* and *B*) = P(*A*) * P(*B*|*A*)

P(*A*) = P(music class) = 25% = 0.25

P(*B*|*A*) = P(instruments in music class) = 40% = 0.40

0.25 * 0.40 = 0.10 = 10%

A numerical value that describes the likelihood of an event occurring

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## Flashcard Content Overview

You've probably heard a weatherman say, 'There's a 30% chance of rain today.' When he talks about chance, he's referring to probability. He may also say something like, 'The average amount of rain that has fallen in this month over the past 10 years is 20 inches.' When he talks about average, he's referring to statistics. These flashcards will help you review what probability and statistics are and where you might use them in your everyday life.

A numerical value that describes the likelihood of an event occurring

P(*A* and *B*) = P(*A*) * P(*B*|*A*)

P(*A*) = P(music class) = 25% = 0.25

P(*B*|*A*) = P(instruments in music class) = 40% = 0.40

0.25 * 0.40 = 0.10 = 10%

Probability of rolling a one: 1/6

Independent events, so probability = (1/6) * (1/6) * (1/6) = 1/216

Dependent events

Probability of 1st queen = 4/52

P(2nd queen) = 3/51

P(3rd queen) = 2/50

P(4th queen) = 1/49

(4/52) * (3/51) * (2/50) * (1/49) = 24/6,497,400 = 1/270,725

Probability of sunglasses - probability of hat and sunglasses = probability of only sunglasses

5/7 - 3/7 = 2/7 = 0.29 = 29%

Dependent events

Total number of candies: 10 + 12 + 15 = 37

Probability of choosing vanilla candy: 10/37

Probability of then choosing chocolate candy: 12/36

(10/37) * (12/36) = 120/1332 = 10/111

The average of a data set

To calculate: add together the data set values, and divide by the total number of values

When arranged in numerical order, the middle value of a data set

If two values in the middle, the median is the average of the two values

The value that appears most frequently in a data set

A data set can also be bimodal (2 modes) or can have no mode

The condition that changes in an experiment due to another condition being changed

The condition that is changed or controlled in an experiment

Data that cannot be measured but can be ordered and ranked

Categorical data that is only used to identify objects

The type of statistics that uses measures of central tendency (like mean, median, and mode) and graphical representations to describe data, show trends, and allow comparisons between data sets

The type of statistics that involves collecting data from a sample of a larger population to make predictions about the entire population

Two events that cannot occur simultaneously, such as rolling a one and a six on a single dice on the same roll

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Math 99: Essentials of Algebra and Statistics22 chapters | 127 lessons | 11 flashcard sets

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- Problem Solving & Math Models Flashcards
- Working with Integers & Exponents Flashcards
- Mathematical Operations Flashcards
- Working with Proportions, Ratios & Averages Flashcards
- Equations, Expressions & Systems of Equations Flashcards
- Rational Numbers, Functions & Inequalities Flashcards
- Solving & Graphing Linear Equations Flashcards
- Understanding Basic Geometry Flashcards
- Basic Probability & Statistics Flashcards
- Data Sets, Sequences & Unit Conversion Flashcards
- Math 99: Algebra & Statistics Formulas & Properties
- Go to Studying for Math 99