Compare Averages: Determining if 12,16 = 10,20,25,5,10

Question

Calculate the average of each group and choose the appropriate sign (?):

12,16=?10,20,25,5,10 12,16\stackrel{?}{=}10,20,25,5,10

Video Solution

Step-by-Step Solution

To solve this problem, we'll determine the average of both groups and compare the results:

  • Step 1: Calculate the average of the first group (12,16)(12, 16).
    The sum of the first group is 12+16=28 12 + 16 = 28.
    There are 2 numbers, so the average is 282=14 \frac{28}{2} = 14.
  • Step 2: Calculate the average of the second group (10,20,25,5,10)(10, 20, 25, 5, 10).
    The sum of the second group is 10+20+25+5+10=70 10 + 20 + 25 + 5 + 10 = 70.
    There are 5 numbers, so the average is 705=14 \frac{70}{5} = 14.
  • Step 3: Compare the averages.
    Both groups have an average of 14; thus, the correct sign is = = .

Since both averages are equal, the conclusion is that the groups have the same average.
Therefore, the solution to the problem is =.

Answer

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