https://www.khanacademy.org/math/ka-math-class-11/x0419e5b3b578592a:statistics-ncert-new/x0419e5b3b578592a:introduction/v/statistics-intro-mean-median-mode-indian-accent 2025-06-04T10:04:13.13703146Z Statistics intro: Mean, median, & mode The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set. The median is the middle value when a data set is ordered from least to greatest. The mode is the number that occurs most often in a data set. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Statistics intro: Mean, median, & mode The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set. The median is the middle value when a data set is ordered from least to greatest. The mode is the number that occurs most often in a data set. https://cdn.kastatic.org/ka-youtube-converted/m4ykdv0DE_A.mp4/m4ykdv0DE_A.mp4 471 Frequency distribution tables and graphs https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:statistics/x06d55bfa213a79fd:measures-of-central-tendency/v/mean-median-mode-example-indian-accent 2025-06-04T10:04:13.13703146Z Mean, median, & mode example Here we give you a set of numbers and then ask you to find the mean, median, and mode. It's your first opportunity to practice with us! Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Mean, median, & mode example Here we give you a set of numbers and then ask you to find the mean, median, and mode. It's your first opportunity to practice with us! https://cdn.kastatic.org/ka-youtube-converted/MQeyg6el9Ng.mp4/MQeyg6el9Ng.mp4 199 Frequency distribution tables and graphs https://www.khanacademy.org/math/tg-math-class-9-bridge/x5c093f69f2aa4d76:statistics/x5c093f69f2aa4d76:cumulative-frequency-table/v/cumulative-frequency-table 2025-10-06T14:00:44.591197305Z Cumulative Frequency Table In this video, we explore how to find less than cumulative frequency and greater than cumulative frequency, and why these concepts matter in data analysis. Starting with a simple frequency table, we walk through how cumulative frequency builds up across classes—either by adding from the bottom up (less than) or subtracting from the top down (greater than). With step-by-step examples and visual explanations, this video makes cumulative frequency easy to grasp and shows its practical role in statistics and graphing. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now!Unit link 00:00 Why do we need cumulative frequency? 01:35 Calculating less than cumulative frequency 04:41 Calculating greater than cumulative frequency Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Cumulative Frequency Table In this video, we explore how to find less than cumulative frequency and greater than cumulative frequency, and why these concepts matter in data analysis. Starting with a simple frequency table, we walk through how cumulative frequency builds up across classes—either by adding from the bottom up (less than) or subtracting from the top down (greater than). With step-by-step examples and visual explanations, this video makes cumulative frequency easy to grasp and shows its practical role in statistics and graphing. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now!Unit link 00:00 Why do we need cumulative frequency? 01:35 Calculating less than cumulative frequency 04:41 Calculating greater than cumulative frequency Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/ves0z2y18sc.mp4/ves0z2y18sc.mp4 398 Frequency distribution tables and graphs https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:data-handling-and-presentation/x04ca845a9a148c80:artistic-and-aesthetic-considerations/v/why-chose-scale-drawing-bar-graph 2024-04-08T19:02:37.104158325Z Why chose scale? Drawing Bar graph In this video we discuss how we can chose the scale for drawing the bar graph and also why choosing the scale is important. Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Why chose scale? Drawing Bar graph In this video we discuss how we can chose the scale for drawing the bar graph and also why choosing the scale is important. https://cdn.kastatic.org/ka-youtube-converted/B5qz2lX4z_0.mp4/B5qz2lX4z_0.mp4 323 Frequency distribution tables and graphs https://www.khanacademy.org/math/ka-math-class-9/x152b0968b8680a8d:statistics-ncert-new/x152b0968b8680a8d:histogram/v/histogram-with-class-marks 2025-10-06T14:00:44.591197305Z Histogram with class marks Learn how to build a histogram from scratch in this step-by-step video! We’ll start with the objective, then move on to boundary calculation, organizing the data, and finally plotting the histogram. With clear visuals and simple explanations, you’ll gain not just the steps, but a deeper understanding of how histograms really work. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/class-8-tg/xc1c312da8d7d0ce2:frequency-distribution-tables-and-graphs Timestamps: 00:00 - Objective 01:20 - Boundary Calculation 04:22 - Making the data 06:30 - Histogram plotting Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Histogram with class marks Learn how to build a histogram from scratch in this step-by-step video! We’ll start with the objective, then move on to boundary calculation, organizing the data, and finally plotting the histogram. With clear visuals and simple explanations, you’ll gain not just the steps, but a deeper understanding of how histograms really work. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/class-8-tg/xc1c312da8d7d0ce2:frequency-distribution-tables-and-graphs Timestamps: 00:00 - Objective 01:20 - Boundary Calculation 04:22 - Making the data 06:30 - Histogram plotting Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/y7Fc9m0UNpg.mp4/y7Fc9m0UNpg.mp4 530 Frequency distribution tables and graphs https://www.khanacademy.org/math/kn-math-class-9-bridge/x14595f36277e97c8:data-handling/x14595f36277e97c8:histograms/v/interpreting-a-histogram-indian-accent 2025-06-03T19:25:43.416794683Z Interpreting a histogram In a cherry pie store, we use a histogram to understand the distribution of cherries on pies. We create buckets for different ranges of cherries, count the pies in each, and can answer questions about our pie inventory and cherry distribution! Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Interpreting a histogram In a cherry pie store, we use a histogram to understand the distribution of cherries on pies. We create buckets for different ranges of cherries, count the pies in each, and can answer questions about our pie inventory and cherry distribution! https://cdn.kastatic.org/ka-youtube-converted/qj7C3TWfyFE.mp4/qj7C3TWfyFE.mp4 269 Frequency distribution tables and graphs https://www.khanacademy.org/math/ka-math-class-9/x152b0968b8680a8d:statistics-ncert-new/x152b0968b8680a8d:frequency-polygons/v/drawing-a-frequency-polygon 2025-04-15T11:31:26.960901531Z Drawing a frequency polygon In this video, we explore how to transform a histogram into a frequency polygon using real-life data. We start by looking at an age distribution histogram for a local area, then introduce the concept of a frequency polygon—explaining why it’s called that and how it can be more useful than a histogram. You’ll learn: • Why use a frequency polygon? Discover its benefits in showing trends, enhancing aesthetics, and comparing multiple data sets. • Step-by-step plotting: Find class marks, plot the points, and extend the graph to the x-axis to complete the polygon. • Practical applications: See real-life examples of how frequency polygons can simplify data interpretation. Created by Sarath Penumuru Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Drawing a frequency polygon In this video, we explore how to transform a histogram into a frequency polygon using real-life data. We start by looking at an age distribution histogram for a local area, then introduce the concept of a frequency polygon—explaining why it’s called that and how it can be more useful than a histogram. You’ll learn: • Why use a frequency polygon? Discover its benefits in showing trends, enhancing aesthetics, and comparing multiple data sets. • Step-by-step plotting: Find class marks, plot the points, and extend the graph to the x-axis to complete the polygon. • Practical applications: See real-life examples of how frequency polygons can simplify data interpretation. Created by Sarath Penumuru https://cdn.kastatic.org/ka-youtube-converted/WkkZFyyp2to.mp4/WkkZFyyp2to.mp4 446 Frequency distribution tables and graphs https://www.khanacademy.org/math/revision-tg-math-class-8/x9ce0e841a99d4a8a:week-2/x9ce0e841a99d4a8a:frequency-distribution-tables-and-graphs/v/frequency-curve 2025-10-06T14:00:44.591197305Z Frequency Curve In this video, we start with the objective of a frequency polygon and then go step by step to build it together. You’ll see how to calculate class marks, plot the important points, understand the area under the curve, and finally draw the frequency polygon. With clear visuals and easy explanations, this lesson makes the concept simple and relatable so you can plot frequency polygons with confidence. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/class-8-tg/xc1c312da8d7d0ce2:frequency-distribution-tables-and-graphs Timestamps: 00:00 - Objective 01:10 - Class Mark Calculation 02:20 - Points 02:55 - Area Under Curve 06:00 - Plotting the Curve Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Frequency Curve In this video, we start with the objective of a frequency polygon and then go step by step to build it together. You’ll see how to calculate class marks, plot the important points, understand the area under the curve, and finally draw the frequency polygon. With clear visuals and easy explanations, this lesson makes the concept simple and relatable so you can plot frequency polygons with confidence. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/class-8-tg/xc1c312da8d7d0ce2:frequency-distribution-tables-and-graphs Timestamps: 00:00 - Objective 01:10 - Class Mark Calculation 02:20 - Points 02:55 - Area Under Curve 06:00 - Plotting the Curve Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/xnTI3NlNjnc.mp4/xnTI3NlNjnc.mp4 493 Frequency distribution tables and graphs https://www.khanacademy.org/math/revision-tg-math-class-8/x9ce0e841a99d4a8a:week-2/x9ce0e841a99d4a8a:frequency-distribution-tables-and-graphs/e/revision-frequency-distribution-tables-and-graphs 2026-02-18T21:20:35.275198076Z Revision frequency distribution tables and graphs TG class 8 . Khan Academy exercise