The arithmetic mean of the following numbers 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7, 7, 7, 7, 7 is?Options414205
Question
The arithmetic mean of the following numbers:
1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6
and
7, 7, 7, 7, 7, 7, 7
is?
Options:
- 41
- 420
- 5
Solution
The arithmetic mean of a set of numbers is calculated by adding all the numbers in the set and then dividing by the count of numbers in the set.
Let's calculate:
Step 1: Add all the numbers together. 1+2+2+3+3+3+4+4+4+4+5+5+5+5+5+6+6+6+6+6+6+7+7+7+7+7+7+7 = 119
Step 2: Count the total numbers in the set. There are 28 numbers in the set.
Step 3: Divide the total (from step 1) by the count (from step 2). 119 ÷ 28 = 4.25
So, the arithmetic mean of the given numbers is 4.25. Therefore, none of the options (41, 420, 5) are correct.
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