
Arithmetic Mean  Fun Bar Graph Game  Math Help Tips  What most people refer to as an 'average value' or central value is called a 'mean value' in Math.  The arithmetic mean of the three data values {25,25,40} is 30. The mean = 30 is found by adding up 25+25+40 = 90 and dividing 90 by 3.  To find the average value of a set of numbers it may help to put the numbers in order. You can rearrange a data set such as {30,40,20,10} to become {10,20,30,40}.  The mean of the four data values {10,20,30,40} is 25. The answer 25 is found by adding up the four values 10+20+30+40 = 100 and dividing 100 by 4.  In general, the arithmetic mean of a set of data values is equal to the sum of the data values divided by the number of data values.  If the game doesn't respond to keyboard input, click inside the game area to establish the game's focus.  The game can be played using the mouse by itself or using the keyboard by itself.  The game speeds up as your score increases. Adjust this by pressing the  or + key repeatedly. 
Back to SliderMath.com 