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Probability explained | Independent and dependent events | Probability and Statistics | Khan Academy Teacherflix 99 Views • 2 years ago

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/ma....th/cc-seventh-grade-

We give you an introduction to probability through the example of flipping a quarter and rolling a die.

Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/probability/independent-dependent-probability/basic_probability/e/dice_probability?utm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics

Watch the next lesson: https://www.khanacademy.org/math/probability/independent-dependent-probability/basic_probability/v/probability-space-exercise-example?utm_source=YT&utm_medium=Desc&utm_campaign=ProbabilityandStatistics

Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!

About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything.

For free. For everyone. Forever. #YouCanLearnAnything

Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channe....l/UCRXuOXLW3LcQLWvxb
Subscribe to KhanAcademy: https://www.youtube.com/subscr....iption_center?add_us

Data Science In 5 Minutes | Data Science For Beginners | What Is Data Science? | Simplilearn Teacherflix 97 Views • 2 years ago

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This What is Data Science Video will give you an idea of a life of Data Scientist. This Data Science for Beginners video will also explain the steps involved in the Data Science project, roles & salary offered to a Data Scientist. Data Science is basically dealing with unstructured and structured data. Data Science is a field that comprises of everything that is related to data cleansing, preparation, and data analysis.
Below topics are explained in this Data Science tutorial:
00:00 Introduction
00:10 Life of a Data Scientist
Steps in Data Science project
00:21 Understanding the business problem
00:37 Data acquisition
00:51 Data preparation
01:29 Exploratory data analysis
01:52 Data modeling
02:20 Visualization and communication
02:43 Deploy & maintenance
03:11 Roles offered to a Data Scientist
03:53 Salary of a Data Scientist

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Static Equilibrium - Tension, Torque, Lever, Beam, & Ladder Problem - Physics Teacherflix 95 Views • 2 years ago

This physics video tutorial explains the concept of static equilibrium - translational & rotational equilibrium where everything is at rest and there's no motion. This video contains plenty of examples and practice problems.

Static Equilibrium:
https://www.youtube.com/watch?v=qGvFAl5CK_c

Elasticity and Hooke's Law:
https://www.youtube.com/watch?v=HALbtyDUjp0

Tensile Stress:
https://www.youtube.com/watch?v=c6ndD5kTkP4

Elastic Modulus:
https://www.youtube.com/watch?v=qQZRTBRJbl4

Bulk Modulus:
https://www.youtube.com/watch?v=ugxgSIGIHrg

___________________________
Volume Unit Conversion:
https://www.youtube.com/watch?v=ylehgnMC1gw

Specific Gravity & Density of Mixtures:
https://www.youtube.com/watch?v=ZcJGFZt-NO4

Will It Sink or Float?
https://www.youtube.com/watch?v=4fwZM6cqyzk

Intro to Pressure & Fluids:
https://www.youtube.com/watch?v=kkq8ruV8_Jw

Atmospheric Pressure Problems:
https://www.youtube.com/watch?v=tYd_CYpNpeY

____________________________
The Gallon Crusher:
https://www.youtube.com/watch?v=abXVQZlFPJg

Absolute Pressure Vs Gauge Pressure:
https://www.youtube.com/watch?v=XCiBaFp8L_M

Water Pressure Vs Gauge Pressure:
https://www.youtube.com/watch?v=12K_aP1KPFk

Full-Length Videos and Worksheets:
https://www.patreon.com/MathSc....ienceTutor/collectio

Physics PDF Worksheets:
https://www.video-tutor.net/ph....ysics-basic-introduc

Here is a list of topics:
1. Static Equilibrium Problems
2. Balancing a Seesaw - Lever Problem - Using Forces and Torques
3. Torque equals force times lever arm / moment arm
4. Positive and Negative Torques - Clockwise vs Counterclockwise rotation
5. Hanging Sign Tension Problem - Finding the tension in the two cables at two different angles
6. Hanging sign attached to a beam problem - how to calculate the horizontal and vertical components of the force exerted by the hinge and pivot point
7. Hanging sign attached to a beam at an angle - determining the tension force in the cable
8. Ladder Problem - How to find the force exerted by the wall on the ladder and the horizontal and vertical components of the force exerted by the ground / floor on the ladder.
9. Ladder problem with man on top. How to determine the coefficient of static friction that prevents the ladder from sliding down - Normal force and static frictional force calculations.

Piecewise Functions - Limits and Continuity | Calculus Teacherflix 87 Views • 2 years ago

This calculus review video tutorial explains how to evaluate limits using piecewise functions and how to make a piecewise function continuous by finding the constant c to make the two parts equal. This video on limits and continuity contains plenty of examples and practice problems for you to work. It discusses how to find if the limit exist by analyzing the one sided limits such as finding the limit as x approaches a number from the left and from the right.

Introduction to Limits:
https://www.youtube.com/watch?v=YNstP0ESndU

How To Evaluate Limits From a Graph:
https://www.youtube.com/watch?v=7Q2HwTHcxA0

Evaluating Limits By Factoring:
https://www.youtube.com/watch?v=fOrOeZA-vdY

Limits of Rational Functions :
https://www.youtube.com/watch?v=M2BgBG2Su94

Limits of Radical Functions:
https://www.youtube.com/watch?v=qay5HvT1UK8

Limits of Trigonometric Functions:
https://www.youtube.com/watch?v=HbtuSC_WOW0

___________________________________
How To Find The Limit at Infinity:
https://www.youtube.com/watch?v=NmLljBAg82o

Infinite Limits + Vertical Asymptotes:
https://www.youtube.com/watch?v=xvFqomOpLrs

Limits at Infinity With Radicals:
https://www.youtube.com/watch?v=1hyoTeWg6Bs

Limits of Absolute Value Functions:
https://www.youtube.com/watch?v=wFeh4ByT0xs

Limits of Composite Functions:
https://www.youtube.com/watch?v=KjL9cWHzeIc

The Squeeze Theorem:
https://www.youtube.com/watch?v=lVIb9iJ-rRI

____________________________________
Limits and Logarithms:
https://www.youtube.com/watch?v=fHzmQmcvheI

Limits of Exponential Functions:
https://www.youtube.com/watch?v=pcUXo7XbRaM

Piecewise Functions - Limits:
https://www.youtube.com/watch?v=JrYmEo6hoiU

3 Step Continuity Test:
https://www.youtube.com/watch?v=WT7oxiiFYt8

Continuity and Differentiability:
https://www.youtube.com/watch?v=fml0-ELYLaE

Limits - Test Review:
https://www.youtube.com/watch?v=6e4Wtgc43KQ

_____________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/

Full-Length Videos and Worksheets:
https://www.patreon.com/MathSc....ienceTutor/collectio

Catherine the Great - History of Russia in 100 Minutes (Part 14 of 36) Teacherflix 84 Views • 2 years ago

"History of Russia in 100 Minutes" is a crash course for beginners. Here you will find the complete history summarized and retold in simple language with accurate dates, the most relevant names and essential concepts. After finishing the course, you will know:

- The basic characteristics of Russian history in different epochs
- The 54 most important rulers and 106 historical persons in Russian history
- 126 key dates and events in Russian history
- The basic terms and concepts of Russian history

The text is accompanied by numerous online resources:
- 20,000 pictures
- 700 videos
- 3,500 songs
- 100 podcast episodes

All that is available via the smarthistories.com website.

http://smarthistories.com/

Narrated by: Sammi Bold
Written by: Tanel Vahisalu
Edited by: Madis Maasing and Kerry Kubilius
Proofread by: Tony Burnett
Graphic Art by: Mehak Zaib Suddle

Video:
“Rise of Catherine the Great” by Paul Czinner, Alexander Korda (1934)

Music:
"Tchaikovsky (Part II)" and "Crocodile Ghena's Song" (1995) by J.M.K.E.
https://www.discogs.com/JMKE-Sputniks...

- - - - - - - - - -

CATHERINE THE GREAT

The reign of Catherine II (Catherine the Great) is known to history as the “Age of Enlightened Absolutism,” in Russia. A whole generation of people grew up enjoying freedom of speech, political stability, and great victories.

BACKGROUND
After the death of Elizabeth, her nephew, Peter III, from Northern Germany ruled disastrously. His wife, Sophie Friederike Auguste, was a pretty German princess who had been invited to Russia while still very young. She converted to Orthodoxy, learned the Russian language, and took the name Catherine. In 1762, she launched a coup against her husband and became the Empress of Russia, known as Catherine the Great.

ENLIGHTENED MONARCH
Catherine continued Peter the Great’s line of modernization, and she strongly supported education and culture. She prepared drafted laws based on the views of the Enlightenment, but the greater part of her ambitious plans, including the abolition of serfdom, led nowhere.

PATRON OF NOBILITY
The great Administration Reform of 1775 increased the administrative power of the nobility. Courts and police institutions were established. The reform significantly increased the effectiveness of local government in Russia.

FOREIGN POLICY
In the beginning, Catherine’s foreign policy was in the hands of Nikita Panin. The commanders Alexander Suvorov, Fyodor Ushakov, and Grigory Potemkin, greatly expanded Russia’s territory in the south and west. In 1784, Crimea was taken from the Ottomans, and the three partitions, formed in 1772, 1793 and 1795, respectively, completely wiped Poland off the map.

PUGACHEV'S REBELLION
Catherine supported the Enlightenment only to a certain extent. She denounced the French Revolution as a brutal act against monarchy.

Although Catherine tried to improve the situation of Russian peasants, these attempts were mostly futile and caused unrest. In 1773, the greatest armed revolt in Russia, constituting 100,000 Cossacks, led by Yemelyan Pugachev, who claimed that he was actually Peter III, was put down ruthlessly. Pugachev was publicly executed.