Khan Academy
7 713 vidéos, +5 400 000 abonnés

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duréevues
Differentiability and continuity9:385 655
Estimating derivative at a point5:564 951
Average rate of change as slope of a secant line5:175 384
Derivative as a concept7:1610 586
Limits of trigonometric functions6:608 585
Analyzing the difference in distributions9:451 890
Example transforming a discrete random variable4:101 507
Analyzing distribution of sum of two normally distributed random variables5:51871
Probabilities from density curves4:534 020
Variance and standard deviation of a discrete random variable6:261 976
Expected value of a discrete random variable4:324 652
Example analyzing discrete probability distribution3:501 661
Valid discrete probability distribution examples4:00323
Conditional probability tree diagram example10:441 877
Testing independence from experimental data4:701 682
Random numbers for experimental probability7:291 417
Random number list to run experiment7:311 543
Experimental versus theoretical probability simulation4:562 386
Impact of removing outliers on regression lines5:44271
Interpreting computer regression data5:131 492
Standard deviation of residuals or Root-mean-square error (RMSD)6:431 467
Threshold for low percentile6:002 055
Residual plots6:121 250
Calculating the equation of a regression line8:111 842
Calculating correlation coefficient r12:222 035
Finding z-score for a percentile4:142 518
z -table for proportion between values7:101 401
z table for proportion above5:701 279
z table for proportion below4:201 133
Worked example finding area under density curves4:40894
Density curve worked example3:52491
Median, mean and skew from density curves6:504 643
Density Curves9:343 517
Examples interpreting position-time graphs9:401 759
Regrouping to add 1-digit number | Addition and subtraction | 1st grade | Khan Academy4:1451 027
Breaking apart 2-digit addition problems | Addition and subtraction | 1st grade | Khan Academy4:4868 258
Adding 2-digit numbers without regrouping 1 | Addition and subtraction | 1st grade | Khan Academy1:5374 030
Adding 1 vs. adding 10 | Addition and subtraction | 1st grade | Khan Academy2:1797 113
Comparison word problems: roly-polies | Addition and subtraction | 1st grade | Khan Academy3:14126 327
Position-time graphs5:101 444
Distance and displacement in one dimension5:321 140
Distance and displacement4:141 582
The US Constitution9:237 030
The Constitutional Convention10:163 012
The Articles of Confederation5:142 868
The Declaration of Independence13:134 045
How did Russia begin? | World History | Khan Academy9:539 340
Discontinuity classification in relation to limits7:163 630
Functions with same limit at inifinity3:462 116
Exploring limits and asymptotes4:141 665
Continuity over an interval9:001 515
Better Takes Practice: The Full Story - Official SAT Practice on Khan Academy2:485 694
Continuity at a point8:182 315
One sided limits from tables6:201 203
Graphical limit example2:581 583
Constructing multiple functions with same limit5:301 613
Better Takes Practice: Ian - Official SAT Practice on Khan Academy1:101 975
Better Takes Practice: Gillian - Official SAT Practice on Khan Academy1:102 033
Better Takes Practice: Diana - Official SAT Practice on Khan Academy1:101 679
Better Takes Practice: Azulaye - Official SAT Practice on Khan Academy1:101 762
Better Takes Practice: Cameron - Official SAT Practice on Khan Academy1:102 327
Title: Better Takes Practice: D'Andre - Official SAT Practice on Khan Academy1:101 663
Better Takes Practice - Official SAT Practice on Khan Academy0:313 333
Comparing Roman and Byzantine Empires8:196 052
Comparison--Rise of Empires7:277 474
Continuity-Sikhism connections to Hinduism and Islam12:705 241
Contextualization--Islam | World History | Khan Academy8:005 822
Contextualization--Buddhism8:326 147
International Human Rights10:104 930
The Scientific Revolution and the Age of Enlightenment | World History | Khan Academy8:315 921
Frankish women in the Carolingian Dynasty primary source | World History | Khan Academy4:532 756
Japanese Imperialism | World History | Khan Academy9:205 307
Opium Wars | World History | Khan Academy5:454 169
The Holocaust | World History | Khan Academy9:4411 428
Independence movements in the 20th Century | World History | Khan Academy8:436 887
Atlantic Independence Movements5:494 120
Industrialization and imperialism | World History | Khan Academy10:247 474
Interpreting slope of regression line2:58790
Interpreting y intercept in regression model2:36387
Mughal rule in India6:408 754
This school year may be ending but we have lots to do for next year.1:4323 669
Sikhism introduction | World History | Khan Academy9:529 143
Ottoman, Safavid and Mughal Empires | World History | Khan Academy10:299 456
Khan Academy Live: SAT Writing51:1519 793
Timur | World History | Khan Academy4:415 383
Classical Japan during the Heian Period | World History | Khan Academy3:433 379
Bhakti movement | World History | Khan Academy7:905 951
Why were the Mongols so effective? | World History | Khan Academy7:1512 376
Knights Templar | World History | Khan Academy9:247 020
Example estimating from regression line3:233 068
Introduction to residuals and least squares regression7:402 740
Calculating residual example4:521 591
How parameters change as data is shifted and scaled7:181 516
Comparing with z scores3:301 428
Calculating percentile3:382 232
Analyzing a cumulative relative frequency graph5:551 141
Mean and standard deviation versus median and IQR7:591 972
Bivariate relationship linearity, strength and direction8:131 557
Khan Academy Live: SAT Reading (Hangouts on air)45:3121 465
Finding height of a parallelogram1:422 910

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