https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-basic-prob/v/basic-probability 2021-07-01T02:19:32Z Intro to theoretical probability We give you an introduction to probability through the example of flipping a quarter and rolling a die. Sal Khan video https://cdn.kastatic.org/googleusercontent/QbRPrxkNbr31HkIoHifM36nu8DPQW3vg7R0gB5GMqyAgY7KtIurP0_WVMG-uad7-eERI8QACnEvgvqciaw8wVpBB Intro to theoretical probability We give you an introduction to probability through the example of flipping a quarter and rolling a die. https://cdn.kastatic.org/ka-youtube-converted/uzkc-qNVoOk.mp4/uzkc-qNVoOk.mp4 498 Probabilty https://www.khanacademy.org/math/statistics-probability/probability-library/basic-theoretical-probability/a/probability-the-basics 2021-04-29T07:51:07Z Probability: the basics Explore what probability means and why it's useful. article https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-basic-prob/v/simple-probability 2021-07-02T09:35:30Z Simple probability: yellow marble In order to find the probability of picking a yellow marble from a bag, we have to first determine the number of possible outcomes, and then how many of them meet our constraints. Sal Khan video https://cdn.kastatic.org/googleusercontent/QAV26IABf-iDWDJ_6zdYp8m2wTLmlFVUjPmizBRBXw_9kRKVGOwhZPlMsInPT9S6ES9SfA9DSziQzVgg6GORCvO1XQ Simple probability: yellow marble In order to find the probability of picking a yellow marble from a bag, we have to first determine the number of possible outcomes, and then how many of them meet our constraints. https://cdn.kastatic.org/ka-youtube-converted/yUaI0JriZtY.mp4/yUaI0JriZtY.mp4 176 Probabilty https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-basic-prob/v/probability-1-module-examples 2021-07-02T09:35:29Z Simple probability: non-blue marble In this example we are figuring out the probability of randomly picking a non-blue marble from a bag. Again, we'll have to think about the possible outcomes first. Sal Khan video https://cdn.kastatic.org/googleusercontent/DxiBJPMM0ibk047TiDi8I53t6F2cvmgMFk_CTH_Jw1NA2x3bDV8zWQG1Om75lW4gHKmGDWCHU7RHEeKfBiS-u8dC Simple probability: non-blue marble In this example we are figuring out the probability of randomly picking a non-blue marble from a bag. Again, we'll have to think about the possible outcomes first. https://cdn.kastatic.org/ka-youtube-converted/mLE-SlOZToc.mp4/mLE-SlOZToc.mp4 596 Probabilty https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-basic-prob/v/intuitive-sense-of-probabilities 2021-05-05T14:35:08Z Intuitive sense of probabilities Think about what probabilities really mean. What does a probability of 0 mean? How about 1? video https://cdn.kastatic.org/googleusercontent/4UBVpzwv0xGQxNIIWHdBrJ1dh2sBPj06oTMZrhRffskB-02IA2z5ccOIOPFaml1JAmfnr3gmKW93tQpmW0X0REu7 Intuitive sense of probabilities Think about what probabilities really mean. What does a probability of 0 mean? How about 1? https://cdn.kastatic.org/ka-youtube-converted/KFgvOQtH0Z0.mp4/KFgvOQtH0Z0.mp4 531 Probabilty https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-basic-prob/e/understanding-probability 2026-04-07T23:36:17.218592739Z Comparing probabilities Practice expressing probabilities in different forms (fractions, decimals, and percents). Rhonda Hughes exercise https://www.khanacademy.org/math/statistics-probability/probability-library/probability-sample-spaces/v/coin-flipping-example 2020-08-28T01:50:17Z Example: All the ways you can flip a coin Manually going through the combinatorics to determine the probability of an event occuring Sal Khan video https://cdn.kastatic.org/googleusercontent/FijTrQBYPJaXloYkbxU5k9myUfryvXgfdIgBR8TIUSoU1MLWKe2ngIhtWVmX_E4vtgGetWs9i2zKkWMbAAioSHw Example: All the ways you can flip a coin Manually going through the combinatorics to determine the probability of an event occuring https://cdn.kastatic.org/ka-youtube-converted/3UlE8gyKbkU.mp4/3UlE8gyKbkU.mp4 134 Probabilty https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-compound-events/v/events-and-outcomes-2 2021-05-19T21:45:29Z Die rolling probability We're thinking about the probability of rolling doubles on a pair of dice. Let's create a grid of all possible outcomes. Sal Khan video https://cdn.kastatic.org/googleusercontent/rDH0lf7SYrA0l1FvqCDgdXZRhsdpFeVFFvwMLwy5wxEPhqzKrUSGzrpQCkdohX8JvpdGqHriWImkoLZkr05eYc9- Die rolling probability We're thinking about the probability of rolling doubles on a pair of dice. Let's create a grid of all possible outcomes. https://cdn.kastatic.org/ka-youtube-converted/O4Qnsubo2tg.mp4/O4Qnsubo2tg.mp4 315 Probabilty https://www.khanacademy.org/math/statistics-probability/probability-library/probability-sample-spaces/v/describing-subsets-of-sample-spaces-exercise 2020-06-23T07:22:40Z Subsets of sample spaces Sal solves an example about subsets. video https://cdn.kastatic.org/googleusercontent/tdjg42g3tcosCcicQM40x5F7bdZjJBAUAmxQxcXdIkI9rDlEvGi0kKdL1vhatrUSDDjnyEyMQ4yK-zmnAoa8TMy0 Subsets of sample spaces Sal solves an example about subsets. https://cdn.kastatic.org/ka-youtube-converted/0uHhk7P9SNo.mp4/0uHhk7P9SNo.mp4 344 Probabilty https://www.khanacademy.org/math/statistics-probability/probability-library/probability-sample-spaces/e/describing-subsets-of-sample-spaces 2024-06-03T03:33:24.453729583Z Subsets of sample spaces Answer interesting questions about subsets of sample spaces. Ben Lucki exercise