MULTIPLE
CHOICE
8th grade / Statistics / Discrete data / 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 our quick math tests you will be revising "Mean mode median range" in 2 simple steps. The math in our tests consists of 16 questions that ask you to calculate the mean, mode, median or range for the given frequency tables to 2 d.p..
These math tests are designed to round off your learning experience here at Free Math Games by testing whether you can correctly recognize the math you have learned (in the multiple choice test) and that you can correctly enter the correct answers (in the writing test).
Make sure you have chosen the correct topic before starting! Although these tests are timed, try to relax and concentrate on getting the answers right at first - later you can try the tests again more quickly.
The two types of tests are:
Key features of our math tests include:
You should expect to score 8+ / 10 in each test before you select a new topic. It is a good idea to repeat the test for each topic you do after two weeks to "reinforce" the math for that topic
UXO * Duck shoot * The frog flies * Pong * Cat and mouse * The beetle and the bee
Rock fall * Four in a row * Sow grow * Choose or lose * Mix and match
This is a multiple choice activity similar to "What is it" in the Math lessons - you are shown a randomly selected question from the topic you are using. A selection of topic answers are displayed as a list. If you click/tap the speaker beside any answer you will hear the audio for that answer.
For each question, you must click on the answer that matches that question. If your answer is correct you will hear a bell and one star will be lit. The next question will be shown. If your answer is wrong, a box will open showing you what the correct answer was.
The test is timed, and the clock starts when you click the Start button. The clock stops when you click your final answer. At the end of your test a screen will tell you how many of the questions you got right and how long you took to complete the test.
The writing test checks whether you can type the correct answer using your keyboard. This test is also timed. You can do the test many times until you get a good score. To start the test, click on the "Writing test" sign in the navigation board, then click on the "Start the test" arrow.
A random problem from your selected topic is shown. Beneath the problem there is a white box into which you should type the answer. If you need a little help you can click on the "Help me" button for a tip. Only use the help if you really need to.
If you type the answer correctly your device will automatically light a star. If you have entered your answer and no star lights up, click on the tick or press Enter to check your answer. When you have tried all the questions, a screen will show you how many questions you answered correctly and how long it took.
* Try to score 8 out of 10 in both test before you choose a new topic *
* It is OK to do the tests many times if you need to *
Secondary math home | Math topics | Math lessons | Math games | Math tests
Preschool math | Elementary math | Secondary math
Site home page | Privacy policy | FAQ | Contact | Acknowledgements | Blog
Select your view: