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'Mean mode median range' for 8th grade
8th grade / Statistics / Discrete data / Frequency tables / Mean mode median range
Frequency tables: mean, mode, median, range
Frequency tables are a way of laying out data to show the number of items there are in different categories. From frequency tables you can see what are the most and least frequent categories, and easily calculate mean, mode and range for a data set. They are also used as a source to generate more graphical representations such as bar charts, pie charts, etc.
Frequency tables make it easy to find the mode, median and range for a data set. The mean takes a little more work.
The mode is the most frequent value in a data set. To find the mode from a frequency table, find the item or category with the highest frequency.
The median is the middle value in an ordered data set. To find the position of the median value in a frequency table, add up all the frequencies in all the categories, add one more and then divide by two. This will identify the position of the median value of the data set. If the result is a decimal, the position of the median value is halfway between two frequencies.
The range is the spread of values in a data set. To find the range of data from a frequency table, take away the smallest value from the largest value.
The mean is the average value of a data set. To find the mean from a frequency table, do the following. Multiply each category by its frequency. Add these values to get the total value from all the categories. Add all the frequencies together to get the total frequencies. Now divide the total value by the total frequencies to get the mean.
In this topic you are asked to derive the mean, mode, median or range for a series of frequency tables.
There are 8 question/answer pairs in the lessons for this topic, and an additional 8 question/answer pairs in all the games and tests.
With these interactive math lessons you will be learning "Mean mode median range" from
8th grade / Statistics / Discrete data in 3 easy steps. The math in our lessons consists of 8 questions that ask you to calculate the mean, mode, median or range for the given frequency tables to 2 d.p..
There are 3 easy math lesson activities in this "Mean mode median range" tutorial. These activities progress step by step to help you the learner gradually master this math topic. The activities are based on "3 stage questioning", a method of learning that quickly and easily builds your confidence as you work through the short series of lessons that strengthen your knowledge of the math that you want to learn.
When you have completed the tutorial for a topic, you should try some of our games before finally doing the test for your chosen topic. See the Help box below for detailed instructions on how to use the lesson activities to help you learn your math more easily.
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'Mean mode median range' for 8th grade
Introduction to the math topic
You start the tutorial with a lesson that introduces the math you will be learning. You will see a set of questions one at a time, and for each question you will see the written answer and also hear the answer to that question.
Repeat the question/answer by clicking on the brown speaker sign. Repeat the question/answer and expand the question graphic by clicking on the question box. Move between questions using the arrow buttons below the question. If there is additional information available for your chosen topic, the "i" button on the left upright bar will be brown on white. Click on the button to load the additional lesson information into the main interface.
Either / Or math lesson
This lesson moves on from the "Introduction" lesson and offers you two possible answers to each question. So, you will see a question then a voice will ask "Is this ... or is it ..." and you will have to choose which of the answers is the one that matches the question.
You choose an answer by clicking or tapping on one of the two answer boxes below the question. You can play the audio for each answer again by clicking on the speaker icon beside the written answer (if robot speech is available and enabled). The program will let you know each time whether you answered correctly. A star will light up red for a wrong answer or white/black for a correct answer.
This lesson asks you the questions in a random order compared to the introduction. At the end of the lesson, you can choose whether to repeat the lesson or move on to the next one.
What is it? math lesson
The final lesson of the tutorial shows you multiple possible answers for each question - you must choose the correct one. You are asked a question and below it are a list of two, three, or four possible written/numeric answers from this topic. Pressing the speaker icon will play the math audio for that answer.
For each picture, click on the answer that matches the question. The program will tell you whether you are right or not. As with the Either / Or activity a system of stars indicate your right and wrong answers. The What is it? lesson will show you all the questions you learned in the Introduction but in a random order.
When you complete the "What is it?" lesson, you can choose whether to go on to play some games with this topic, or whether you want to repeat some or all of the lesson activities in this tutorial. You should expect to get 80% of the answers correct in most of the activities before trying some of the Math games with this topic.
