Now we need to make our denominators match. Since 5 is evenly divided by 10, we can multiply just one term to get a common denominator. Multiply 2 by 2, and get 4, then we multiply 5 by 2 and get 10.
Addism 1.2.2 Mods
Apr 19, 2015
Explanation:
Mean: #bar x=(1+2+1+2+1+3+3+4+3)/9=20/9 = 2.22#
Median: First we put the numbers in order from lowest to highest:
#1,1,1,2,2,3,3,3,4#
The median is the number that has the central position.
Median# =2#
Mode: it is the number that appears the most times. In this case, both #1 and 3# appear the same number of times, so they are both modes.
May 3, 2015
Explanation:
For such questions, it helps to rewrite the list in order. So:
#color(red)(1,1,1),2,2,color(red)(3,3,3),4.#
The mode is the number which appears most often. Since both #1 and 3# appear three times each, there are two modes: #color(red)(1 and 3)#.
The median is the 'middle' number when the list is ranked in order. Since this list has 9 numbers, the middle number is the 5th one, which in this case is 2.
#1,1,1,2,color(blue)(2),3,3,3,4.#
The mean is another word for average. To calculate the average, simply add up all the numbers and divide by the number of numbers in the list. In this case we have #20div 9#, which equals #2.22.#
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