How to construct a frequency distribution table of quantitative data, in particular choosing your class width and figuring out your lower and upper class limits. Although there are no hard and fast rules for doing this, this video gives you some guidelines for how to do it correctly.
Views: 290517 Ann Defranco
To understand graphs and ways to measure central tendency, please visit https://DontMemorise.com . Don’t Memorise brings learning to life through its captivating FREE educational videos. New videos every week. To stay updated, subscribe to our YouTube channel : http://bit.ly/DontMemoriseYouTube Register on our website to gain access to all videos and quizzes: http://bit.ly/DontMemoriseRegister Subscribe to our Newsletter: http://bit.ly/DontMemoriseNewsLetter Join us on Facebook: http://bit.ly/DontMemoriseFacebook Follow us : http://bit.ly/DontMemoriseBlog
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This video covers how to use the "2^k" rule to determine the number of classes for a frequency distribution. Remember when determining the width of your classes to round up to the nearest whole integer. For more videos please visit http://www.mysecretmathtutor.com
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CSEC math topic
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Determine the class width and the size of the data set from a histogram.
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Do subscribe, like and share and help us grow. We are updated with new tutorials every day.
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Please Subscribe here, thank you!!! https://goo.gl/JQ8Nys How to Find the Class Boundaries in a Frequency Table with Decimals
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This Maths video explains how to draw histogram when the class widths are different. This video is meant for students studying in class 9 and 10 in CBSE/NCERT and other state boards. About us: We are a social enterprise working on a mission to make school learning interesting, relevant and affordable to every child on this planet. You can watch our FREE online videos at http://www.bodhaguru.com/watch and download our practice application/games - just visit http://www.bodhaguru.com/play If you like our videos, subscribe to our channel http://www.youtube.com/user/BodhaGuruLearning. Feel free to connect with us at http://www.facebook.com/BodhaGuru OR http://twitter.com/Bodhaguru Have fun, while you learn. Thanks for watching -- Team BodhaGuru
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This video details the steps to be followed in order to construct a Grouped Frequency Distribution from a Raw Data Set. The details four instructive steps. Please note a small error, although this does not take away from the conceptual idea. The class interval is calculated as (76/6) when it should be (72/6).
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How to find Mean when unequal class intervals || Statistics4all || Class Tenth Must Watch || Popular And Recommended Videos: 1)How to use Log Tables Basic Knowledge part 1 of 1 : http://bit.ly/2uAHvFK 2)How to use Log Tables in Solving Question Part 2 of 1 : http://bit.ly/2vdpZuR 3)CBSE sample paper XII new pattern class XII fully analysed get ready to score 100 in boards 2017: http://bit.ly/2hEmhp0 4)Important Question On Indefinite Integration : http://bit.ly/2vGqspR About Us: AVTE is an Institution which was established in the year 1988. Its rapid growth is aptly attributed to it's highly professional style of coaching. It has produced unbeatable results from the past 30years and still runs strong. Website: www.avteschool.org Most Popular Programs By AVTE: TEST SERIES: It aims to reduce the anxiety faced by a lot of students during their exams.This program is prepared under the guidance of subject experts , to give a regular practice and revision to the students. For further inquires : Email- [email protected], [email protected] Phone- +919810934519, 01129239855 Address-http://bit.ly/AVTEmap
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Get the full course at: http://www.MathTutorDVD.com In this lesson, we'll discuss the concept of the confidence interval in statistics. We'll solve a few problems where we must calculate the confidence interval of a population mean when given information such as the sample size, margin of error, and the sample mean.
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This video covers how to make a relative frequency distribution chart. Remember that in a relative frequency distribution we scale back the frequency using the total frequency. Depending on rounding, the total relative frequency might not be one, but should be very close. For more videos please visit http://www.mysecretmathtutor.com
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Calculating Mean for grouped data when class intervals are of unequal lengths
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Learn how to find the median of a continuous frequency distribution from this video. To view more Educational content, please visit: https://www.youtube.com/appuseriesacademy To view Nursery Rhymes, please visit: https://www.youtube.com/appuseries To view Content in other Languages, please visit: www.youtube.com/appuseries + "Language". For Example for Hindi content: www.youtube.com/appuserieshindi To Buy Books and CDs, please visit : https://www.appuseries.com
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Tutorial on how to calculate z scores. A z score measures the distance, in standard deviations, a specific observation is from the mean. Like us on: http://www.facebook.com/PartyMoreStudyLess Playlist on z scores : http://www.youtube.com/course?list=EC6157D8E20C151497 Related Video: How to Read a Normalized Table http://www.youtube.com/watch?v=dWu0KLXuEpA Created by David Longstreet, Professor of the Universe, MyBookSucks http://www.linkedin.com/in/davidlongstreet
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Go to http://www.examsolutions.net/ for the index, playlists and more maths videos on class intervals, histograms, standard deviation and other maths and statistics topics.
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Step deviation method ll finding mean ll cbse maths class 10 chapter 14 statistics How to Find Mean Using Step Deviation Method in Statistics (English) | NCERT 10th Class Maths for detailed understanding of mean median and mode follow me on unacademy https://unacademy.com/course/foundation-iit-jee/U8KIBBMD ARITHMETIC MEAN | DIRECT | SHORT CUT | STEP DEVIATION METHODS Calculating the Mean using Step deviation method Statistic Mean of Grouped Data by Step deviation Method Oswaal CBSE Sample Question Papers Class 10 Mathematics http://amzn.to/2gxJkSN Oswaal CBSE Sample Question Papers Class 10 Science http://amzn.to/2gSMPQX Oswaal CBSE Sample Question Papers Class 10 English Communicative http://amzn.to/2l02NNn Oswaal CBSE Sample Question Paper for Class 10 English Communicative, Hindi B, Science, Social Science and Maths (Set A 10SP) http://amzn.to/2xSw2b9 Shiv Das CBSE Past Years Board Papers Pack of 4 for Class 10 Maths Science Social Science English Communicative (2018 Board Exam Edition) http://amzn.to/2yv2akC Super 20 Mathematics Sample Papers Class 10th CBSE 2017-18 http://amzn.to/2ytokn9 Super 20 Science Sample Papers Class 10th CBSE 2017-18 http://amzn.to/2x99les buy Redmi 4 (Gold, 64GB) http://amzn.to/2eAriya buy Cables Kart Omnidirectional 3.5mm Microphone with Stand for Laptop, PC - (Black) http://amzn.to/2wy7ekx buy Blue Microphones Snowball iCE Condenser Microphone (White) http://amzn.to/2wvD1Eu buy Photron Tripod Stedy 450 with 4.5 Feet Pan Head http://amzn.to/2gDHyiF buy Canon EOS 1200D 18MP Digital SLR Camera (Black) http://amzn.to/2eA0gY6 buy Sony Cybershot DSC-WX350/B 18.2MP Digital Camera (Black) http://amzn.to/2gveJRU If you like our videos, subscribe to our channel https://www.youtube.com/channel/UCEVG-1G2sP_CCvRUp3i_fyg Please Like Our Facebook Page. https://www.facebook.com/galaxycoachingclasses/ Or At https://www.facebook.com/galaxymathstricks/ https://www.facebook.com/cbsemaths.8.9.10/ Please Follow Me On Instagram https://www.instagram.com/chetanptl12/ Please Follow me on Twitter. https://twitter.com/chetan21385 Have fun, while you learn. Thanks for watching
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As a review of 6th grade statistics concepts, I show how to make a histogram using quiz scores as data. In a histogram, data is grouped into "bins". Before we can do that, we need to calculate the bin width. Simply find the range (maximum - minimum) and divide that by how many bins you'd like to have. A rough guideline for the number of bins is: take the square root of the number of data values you have. In this case, I have 20 data values, and square root of 20 is between 4 and 5, so 4-5 bins is reasonable. I also discuss the central tendency (using mean) and the variability (using mean absolute deviation) of the data. The 2nd part of this lesson (where we look at a box-and-whisker plot and more data analysis) is at https://www.youtube.com/watch?v=Bk_w0euUZcM This lesson can be used in 6th grade (when students learn to make histograms) or in 7th grade (for review). Learn more 6th grade math with Math Mammoth grade 6 curriculum at http://www.mathmammoth.com/complete/grade_6.php and 7th grade math with Math Mammoth grade 7 curriculum at http://www.mathmammoth.com/complete/grade_7.php
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Tutorial on calculating the standard deviation and variance for statistics class. The tutorial provides a step by step guide. Like us on: http://www.facebook.com/PartyMoreStudyLess Related Videos: How to Calculate Mean and Standard Deviation Using Excel http://www.youtube.com/watch?v=efdRmGqCYBk Why are degrees of freedom (n-1) used in Variance and Standard Deviation http://www.youtube.com/watch?v=92s7IVS6A34 Playlist of z scores http://www.youtube.com/course?list=EC6157D8E20C151497 David Longstreet Professor of the Universe Like us on: http://www.facebook.com/PartyMoreStudyLess Professor of the Universe: David Longstreet http://www.linkedin.com/in/davidlongstreet/ MyBookSucks.Com
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Learn how to draw a histogram. Get more videos of maths problem solving at http://www.meritnation.com/products/demo/online In the video, age distribution of a group of persons which class widths are not uniform is represented in the form of histogram by adjusting the frequencies.
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How to draw a histogram when class intervals are not same ll NCERT cbse class 9 maths statistics How to draw a histogram of different class widths Maths - Histograms - Unequal Class Intervals Construct histogram for continuous grouped frequency distribution with unequal class intervals? Class 9 STATISTICS (Frequency Polygon & Special Histogram) - histogram (unequal class intervals) Drawing histogram of different class widths - Class 9 Maths If you like our videos, subscribe to our channel https://www.youtube.com/channel/UCEVG-1G2sP_CCvRUp3i_fyg Please Like Our Facebook Page. https://www.facebook.com/galaxycoachingclasses/ Or At https://www.facebook.com/galaxymathstricks/ https://www.facebook.com/cbsemaths.8.9.10/ Please Follow Me On Instagram https://www.instagram.com/chetanptl12/ Please Follow me on Twitter. https://twitter.com/chetan21385 Have fun, while you learn. Thanks for watching
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Check us out at http://math.tutorvista.com/statistics/mode.html Mode of Data In Statistics Mean, Median and Mode are known as the measures of central tendencies. The mode of a given set of data is the observation with the maximum frequency. The first step towards finding the mode of the grouped data is to locate the class interval with the maximum frequency. The class interval corresponding to the maximum frequency is called the modal class. The mode of this data is calculated using the formula Mode = l + h x (f1 f0) / (2f1 f0 f2), Where, l is the lower class limit of the modal class h stands for the class size assuming that all class intervals have the same class size. f1 stands for the frequency of the modal class. f0 stands for the frequency of the class preceding or just before the modal class. f2 stands for the frequency of the class succeeding or just after the modal class. Please like our facebook page http://www.facebook.com/tutorvista Follow us at: https://plus.google.com/+tutorvista/
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Go to http://www.examsolutions.net/ for the index, playlists and more maths videos on histograms and other maths topics.
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STATISTICS Class 9 chapter 14 Question 7 of Exercise 14.3 (NCERT) Frequency polygon for non continuous class interval Every day we come across a wide variety of information’s in the form of facts, numerical figures, tables, graphs, etc. These are provided by newspapers, televisions, magazines and other means of communication. These may relate to cricket batting or bowling averages, profits of a company, temperatures of cities, expenditures in various sectors of a five year plan, polling results, and so on. These facts or figures, which are numerical or otherwise, collected with a definite purpose are called data. Data is the plural form of the Latin word datum. Of course, the word ‘data’ is not new for you. Our world is becoming more and more information oriented. Every part of our lives utilises data in one form or the other. So, it becomes essential for us to know how to extract meaningful information from such data. This extraction of meaningful information is studied in a branch of mathematics called Statistics. The word ‘statistics’ appears to have been derived from the Latin word ‘status’ meaning ‘a (political) state’. In its origin, statistics was simply the collection of data on different aspects of the life of people, useful to the State. Over the period of time, however, its scope broadened and statistics began to concern itself not only with the collection and presentation of data but also with the interpretation and drawing of inferences from the data. Statistics deals with collection, organisation, analysis and interpretation of data. The word ‘statistics’ has different meanings in different contexts. Our aim to extend helping hand to students by making thing easier and faster to understand every student has his own pace, so we have introduced this platform, which can be used any number of times and round the clock (24 X7). We are also available to provide special online coaching (Face to Face) for those who seek further help. www.mywayteaching.com www.facebook.com/mywayteaching Contact us: [email protected] Learn mathematics, learn maths,learn mathematics in funny way, learn table in easy way, learn table,learn online class,online classes, math calculation, multiplication and division.class interval on a frequency polygon,frequency polygon for unequal classes
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This statistics video tutorial explains how to use the standard deviation formula to calculate the population standard deviation. The formula for the sample standard deviation is also provided. This video shows you the variables associated with the sample mean and the population mean. In addition, it discusses how to calculate variance from standard deviation.
Views: 98614 The Organic Chemistry Tutor
Tutorial on how to calculate t statistics for different or unrelated groups (means of different groups). Includes step by step prices of how to calculate t statistics, degrees of freedom, and look up t values. Playlist on t statistics http://www.youtube.com/playlist?list=PL8B759A5C1C5C12AF Like us on: http://www.facebook.com/PartyMoreStudyLess Created by David Longstreet, Professor of the Universe, MyBookSucks http://www.linkedin.com/in/davidlongstreet
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Chapter 2.2 Organizing and Graphing Quantitative Data Class- For quantitative data an interval that includes all the values that fall within two numbers-the lower and upper limits. Lower Limit-Smallest Value in the class Upper Limit-Largest limit in the class Frequency Distribution for Quantitative Data-A frequency Distribution for quantitative data lists all the classes and the number of values that belong to each class. Data presented in the form of a frequency distribution are called grouped data. Class Boundary-A Class Boundary is given by the midpoint of the upper limit of one class and the lower of the next class Class Size (Width)-The difference between the two Boundaries of a class width (size). Although it is not uncommon to have classes of different sizes, most of the time it is preferable to have the same width for all classes. To determine the classes are the same size, first find the difference between the largest and the smallest values in the data. Then, the approximate width of a class is obtained by dividing this difference by the number of desired classes. Calculation of class width: Largest Value -- Smallest Value Approximate Width = -------------------------------------------- Number of Classes Class Midpoint (Mark) -- is obtained by dividing the sum of the two limits (or the two boundaries) of a class by 2. Histogram -- A histogram is a graph in which classes are marked on the horizontal axis and the frequencies, relative frequencies, or percentages are marked on the vertical axis. The frequencies, relative frequencies, or percentages are represented by the heights of the bars. In a histogram, the bars are drawn adjacent to each other. Polygon -- is another device that can be used to present quantitative data in a graphic form. To draw a frequency polygon, we first mark a dot above the midpoint of each class at a height equal to the frequency of that class. A polygon is formed by joining the midpoints of the tops of successive bars in a histogram w/ straight lines. Number of classes: Usually the number of classes for a frequency dist. Table varies from 5 to 20, depending mainly on the number of observations in the data set. It is preferable to have more classes as the size of a data set increases. The decision about the number of classes is arbitrarily made by the data organizer. (C = # of classes) what teacher gave (C=1 + 3.3 log n) -- in bk Calculation of class width Lower limit of first class -- any convenient number that is equal to or less than the smallest value in the data set can be used as the lower limit of the first class. (refer to ex 2-3 on pg. 39) for ex. Calculating relative frequency and percentage Relative frequency of class = frequency of that class / sum of all frequencies -- f / Ef Percentage = Relative frequency multiplied by 100% Histogram -- can assume any one large # of shapes: most common of these shapes are: Symmetric Skewed Uniform Symmetric histogram -- is identical on both sides of its central point. The histogram is shown below. Skewed histogram -- is nonsymmetric for a skewed histogram, the tail on one side is longer than the tail on the other side. A skewed to the right histogram has a longer tail on the right side. A skewed to the left histogram has a longer tail on the left side. Uniform histogram or rectangular histogram has the same frequency for each class. Fooling the reader -- rescribing data using graphs give us insights into the main characteristics of the data. But graphis, unfortunately , can also be used intentionally or unintentionally, to distort the facts and deceive the reader. The following are two ways to manipulate graphs to convey a particular opinion or impression. 1. Changing the scale -- Either on one or on both axes -- that is, shortening or stretching one or both of the axes. 2. Truncating the frequency axis -- that is, starting the frequency axis at a number greater than zero. • When interpreting a graph, we should be very cautious. We should observe carefully whether the frequency axis has been truncated or whether any axis.
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Using Microsoft Excel to calculate Standard Deviation, Mean, and Variance. Related Video: How to Calculate Standard Deviation and Variance http://www.youtube.com/watch?v=qqOyy_NjflU Like us on: http://www.facebook.com/PartyMoreStudyLess
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Measures of Spread - Standard Deviation, Percentile, Z-Score, Quartiles and Box-Whisker Plots : https://www.youtube.com/playlist?list=PLJ-ma5dJyAqprvhO3Ki6LrW7kR1U-s1pL [email protected]
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Check out our interesting video on "Statistics-Mean Of Grouped Data" for class 10 Math. Visit our website for more information: https://letstute.com I hope you enjoy this online lecture on "Statistics - Mean Of Grouped Data" by LetsTute. #Cumulative #Frequency #Distribution #mean #median #mode #cbse #quantitativeaptitude #problemsolving #maths In this session know the detailed explanation on the following Topics: 1. Grouped Data 2. Class size 3. Frequency 4. Direct method 5. Assumed mean method 6. Step deviation method. BUY our entire Course Dvd’s and Pendrive for Class 10 Maths which includes video lectures, Assessments and Quiz Amazon: https://goo.gl/yNb6pW Edurev: https://goo.gl/gtw4Aj To Get Regular Content Updates- Facebook : https://www.facebook.com/letstutepage Twitter : https://twitter.com/letstute Google+: https://plus.google.com/+Letstute For Queries: Email: [email protected] Call / WhatsApp: +91 7506363600 Visit our other channels: LetsTute CBSE Math: http://bit.ly/2h1B2lP LetsTute Accountancy: http://bit.ly/1VvIMWD Values to Lead (Value Education): http://bit.ly/1poLX8j"
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