To find the mean (average) of a set of numbers, you follow two simple steps:
1.
Add all the numbers together to get the sum.
2.
Divide that sum by how many numbers there are in the list.
Here is the step-by-step solution for each problem on the worksheet:
1. Set: 8, 3, 52, 48, 7, 78
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Count: There are 6 numbers.
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Sum: $8 + 3 + 52 + 48 + 7 + 78 = 196$
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Mean: $196 \div 6 = 32.666...$
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Answer: 32.67 (rounded)
2. Set: 6, 26, 92, 13, 3, 48
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Count: There are 6 numbers.
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Sum: $6 + 26 + 92 + 13 + 3 + 48 = 188$
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Mean: $188 \div 6 = 31.333...$
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Answer: 31.33 (rounded)
3. Set: 55, 22, 33, 59, 2, 4
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Count: There are 6 numbers.
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Sum: $55 + 22 + 33 + 59 + 2 + 4 = 175$
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Mean: $175 \div 6 = 29.166...$
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Answer: 29.17 (rounded)
4. Set: 7, 85, 9, 1, 67, 8
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Count: There are 6 numbers.
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Sum: $7 + 85 + 9 + 1 + 67 + 8 = 177$
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Mean: $177 \div 6 = 29.5$
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Answer: 29.5
5. Set: 36, 2, 81, 83, 79, 2
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Count: There are 6 numbers.
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Sum: $36 + 2 + 81 + 83 + 79 + 2 = 283$
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Mean: $283 \div 6 = 47.166...$
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Answer: 47.17 (rounded)
6. Set: 62, 97, 16, 28, 3, 2
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Count: There are 6 numbers.
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Sum: $62 + 97 + 16 + 28 + 3 + 2 = 208$
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Mean: $208 \div 6 = 34.666...$
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Answer: 34.67 (rounded)
7. Set: 7, 53, 9, 39, 9, 36
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Count: There are 6 numbers.
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Sum: $7 + 53 + 9 + 39 + 9 + 36 = 153$
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Mean: $153 \div 6 = 25.5$
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Answer: 25.5
8. Set: 8, 29, 64, 3, 7, 5
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Count: There are 6 numbers.
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Sum: $8 + 29 + 64 + 3 + 7 + 5 = 116$
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Mean: $116 \div 6 = 19.333...$
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Answer: 19.33 (rounded)
9. Set: 1, 6, 87, 26, 8, 1
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Count: There are 6 numbers.
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Sum: $1 + 6 + 87 + 26 + 8 + 1 = 129$
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Mean: $129 \div 6 = 21.5$
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Answer: 21.5
10. Set: 18, 98, 9, 88, 59, 98
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Count: There are 6 numbers.
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Sum: $18 + 98 + 9 + 88 + 59 + 98 = 370$
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Mean: $370 \div 6 = 61.666...$
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Answer: 61.67 (rounded)
Final Answer:
1. Mean = 32.67
2. Mean = 31.33
3. Mean = 29.17
4. Mean = 29.5
5. Mean = 47.17
6. Mean = 34.67
7. Mean = 25.5
8. Mean = 19.33
9. Mean = 21.5
10. Mean = 61.67
Parent Tip: Review the logic above to help your child master the concept of find the mean worksheet.