in Probability and Statistics.
Average
An average is a single value that is meant to typify a list of values. If all the numbers in the list are the same, then this number should be used. If the numbers are not all the same, an easy way to get a representative value from a list is to randomly pick any number from the list. However, the word 'average' is usually reserved for more sophisticated methods that are generally found to be more useful.
The most common type of average is the arithmetic mean, often simply called the mean. The arithmetic mean of two numbers, such as 2 and 8, is obtained by finding a value A such that 2 + 8 = A + A. It is then simple to find that A = (2 + 8)/2 = 5. Switching the order of 2 and 8 to read 8 and 2 does not change the resulting value obtained for A. The mean 5 is not less than the minimum 2 nor greater than the maximum 8. If we increase the number of terms in the list for which we want an average, we get, for example, that the arithmetic mean of 2, 8, and 11 is found by solving for the value of A in the equation 2 + 8 + 11 = A + A + A. It is simple to find that A = (2 + 8 + 11)/3 = 7.
Again, changing the order of the three members of the list does not change the result: A = (8 + 11 + 2)/3 = 7, and that 7 is between 2 and 11. This summation method is easily generalized for lists with any number of elements. However, the mean of a list of integers is not necessarily an integer. "The average family has 1.7 children" is a jarring way of making a statement that is more appropriately expressed by "the average number of children in the collection of families examined is 1.7".
Many students find average difficult. They feel overwhelmed with average homework, tests and projects. And it is not always easy to find average tutor who is both good and affordable. Now finding
average help is easy. For your average homework, average tests, average projects, and average tutoring needs, TuLyn is a one-stop solution. You can master hundreds of math topics by using TuLyn.
At TuLyn, we have over 2000 math video tutorial clips including
average videos,
average practice word problems,
average questions and answers, and
average worksheets.
Our
average videos replace text-based tutorials and give you better step-by-step explanations of average. Watch each video repeatedly until you understand how to approach average problems and how to solve them.
- Hundreds of video tutorials on average make it easy for you to better understand the concept.
- Hundreds of word problems on average give you all the practice you need.
- Hundreds of printable worksheets on average let you practice what you have learned by watching the video tutorials.
How to do better on average: TuLyn makes average easy.
Finding The Average Speed Video Clip
Finding The Average Speed
Video Clip Length: 1 minute 3 seconds
Video Clip Views: 18457
average, distance, speed, statistics, time
Finding The Average Of Decimal Values Containing Hundredths And Thousandths Places Video Clip
Finding The Average Of Decimal Values Containing Hundredths Places Video Clip
Finding The Average Of Decimal Values Containing Hundredths And Thousandths Places 2 Video Clip
Top Average Word Problems
Post a homework question on average:
How Others Use Our Site
Remediation for my chemistry students who are, on the average, 10th graders.
I think it will give me the start I need and also it will help me achieve my goal for the grade average I am needing.
Post a Comment
Watch video clips on statistics, print statistics worksheets, practice statistics word problems.