Khan Academy
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Conditions for confidence intervals worked examples4:542,954
Interpreting confidence intervals example5:003,105
Conditions for valid confidence intervals6:441,848
Confidence intervals and margin of error11:452,941
Confidence interval simulation4:253,600
Scarcity4:333,770
Production Possibilities Curve as a model of a country's economy | Micro Economics | Khan Academy6:49922
Difference of functions | Functions and their graphs | Algebra II | Khan Academy2:163,901
Proof of the derivative of sin(x) | Derivatives introduction | AP Calculus AB | Khan Academy5:52937
Endocrine system introduction4:404,726
Human fertilization and early development7:595,617
Unites States v Lopez4:594,203
McCulloch vs Maryland7:492,533
Federal and State powers and the 10th and 14th Amendments4:412,579
The 10th and 14th Amendments in relation to federal and state powers4:401,879
Enumerated and implied powers of the US Federal Government6:302,143
Federalism in the United States6:403,899
Multiple points of influence due to separation of powers and checks and balances4:282,533
Impeachment8:347,427
Separation of Powers and Checks and Balances3:593,359
Impact of Constitutional compromise on us today8:262,596
Introduction to cilia, flagella and pseudopodia4:253,255
Organelles in eukaryotic cells9:383,129
Introduction to the cell5:528,171
Introduction to passive and active transport8:602,303
Introduction to pH5:224,010
Introduction to vitamins and minerals6:115,202
Probability of sample proportions example7:351,774
Normal conditions for sampling distributions of sample proportions6:172,171
Introduction to sampling distributions7:181,876
Sampling distribution of sample proportion part 19:571,611
Sampling distribution of sample proportion part 24:341,193
Biased and unbiased estimators from sampling distributions examples5:56316
Give to Khan Academy today!1:5464,866
Introduction to sampling distributions9:112,986
10% Rule of assuming "independence" between trials6:43971
Identifying individuals, variables and categorical variables in a data set2:404,022
Introduction to vertex form of a quadratic6:137,272
Democratic ideals in the preamble of the US Constitution3:12242
Federalist Papers #10 (part 1)9:572,015
Federalist Papers #10 (part 2)6:601,100
Interpreting a quadratic in factored form5:355,250
Anti Federalists and Brutus I9:302,363
Introduction to Democracy and its broad variations9:154,309
The Articles of Confederation and Shays' Rebellion8:574,479
Democratic ideals of US government9:403,896
Democratic ideals in the Declaration of Independence7:532,709
Natural rights, social contract, democracy, republicanism and limited government7:553,210
Thomas Hobbes and Social Contract8:007,252
Constructing linear and exponential functions from graph | Algebra II | Khan Academy7:255,174
Value added approach to calculating GDP | Macroeconomics | Khan Academy5:16886
Equilibrium price and quantity from changes in both supply and demand6:132,926
Changes in equilibrium price and quantity when supply and demand change | Khan Academy6:161,500
Change in supply versus change in quantity supplied | Microeconomics | Khan Academy6:151,411
Change in demand versus change in quantity demanded | Microeconomics | Khan Academy8:271,654
Input approach to determining comparative advantage | Macroeconomics | Khan Academy8:52976
Production Possibilities Curve PPC as a model of a nation's output | Macroeconomics | Khan Academy7:551,126
Terms of Trade and the Gains from Trade | Macroeconomics | Khan Academy9:561,434
Identifying centripetal force vectors for cars and satellites9:401,917
Identifying centripetal force for ball on string5:501,481
Recognizing force vectors for pendulum2:591,465
Introduction to centripetal force6:143,275
Centripetal acceleration from linear and angular velocity4:57971
Deriving formula for centripetal acceleration from angular velocity5:302,401
Change in period and frequency from change in angular velocity examples6:481,008
Connecting angular velocity to period and frequency6:451,513
Visually dividing unit fraction by a whole number3:002,692
Example diving a unit fraction by a whole number2:256,339
Visually dividing whole numbers by unit fractions2:282,729
Example dividing a whole by a unit fraction1:524,915
Visually dividing a fraction by a whole number3:535,195
Adding tenths to hundredths3:704,146
Word problem subtracting fractions with like denominators3:902,704
Whole number divided by a fraction example3:506,647
Dividing mixed numbers example3:338,247
Opportunity cost and comparative advantage | Macroeconomics | Khan Academy9:554,106
PPCs for increasing, decreasing and constant opportunity cost | Macroeconomics | Khan Academy5:262,820
Utility maximization example4:324,598
Comparing proportionality constants5:339,216
Interpret proportionality constants3:205,437
Percent word problem examples7:5914,398
Proportional relationships example4:307,248
Tax, discount and tip examples5:4814,015
Exploring scale copies1:523,409
Proportionality constant from table1:457,289
Constant of proportionality from equation2:239,365
Identifying constant of proportionality graphically4:3710,220
Identifying values in scale drawings3:494,496
Scale factors and area6:404,047
Identifying scale factors2:555,217
Identifying scaled copies4:402,846
Corresponding points and sides of scaled shapes2:552,844
Fraction decimal and percent from visual model3:339,779
Rate problems4:308,569
Relative position1:503,627
Ratios with tape diagrams4:3014,174
Ratios and measurement6:5711,719
Ratios and double number lines5:5317,952
Ratios on coordinate plane5:1213,148
Another separable differential equation example4:271,888



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