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Algebra 1 : How to find mean

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Example Questions

Example Question #141 : How To Find Mean

Find the mean of the following set of numbers (round to the nearest tenth):

$\displaystyle 5, 6, 7, 8, 9, 10, 22$

Possible Answers:

9.6 $\displaystyle 9.6$

11.2 $\displaystyle 11.2$

9.4 $\displaystyle 9.4$

10.2 $\displaystyle 10.2$

9.7 $\displaystyle 9.7$

Correct answer:

9.6 $\displaystyle 9.6$

Explanation:

To calculate the mean of any set of n numbers, add each of the numbers together, then divide the sum by n.

The best answer is:

9.6 $\displaystyle 9.6$

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Example Question #142 : How To Find Mean

Find the mean of the following set of numbers (round to the nearest tenth):

$\displaystyle 12, 22, 24, 38, 40, 54$

Possible Answers:

30.6 $\displaystyle 30.6$

$\displaystyle 32$

30.7 $\displaystyle 30.7$

31.7 $\displaystyle 31.7$

31.6 $\displaystyle 31.6$

Correct answer:

31.7 $\displaystyle 31.7$

Explanation:

To calculate the mean of any set of n numbers, add each of the numbers together, then divide the sum by n.

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Example Question #143 : How To Find Mean

Find the mean of the following set of numbers (round to the nearest tenth):

$\displaystyle 10, 20, 30, 40, 50$

Possible Answers:

$\displaystyle 20$

$\displaystyle 35$

$\displaystyle 30$

$\displaystyle 25$

$\displaystyle 40$

Correct answer:

$\displaystyle 30$

Explanation:

To calculate the mean of any set of n numbers, add each of the numbers together, then divide the sum by n.

The best answer is:

$\displaystyle 30$

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Example Question #144 : How To Find Mean

Find the mean: $\displaystyle [6,9,60]$

Possible Answers:

$\displaystyle 30$

$\displaystyle 40$

$\displaystyle 20$

$\displaystyle 25$

$\displaystyle 35$

Correct answer:

$\displaystyle 25$

Explanation:

The mean is the average of the dataset.

Add the three numbers and divide by the total amount of numbers.

$\frac{6+9+60 }{3}= \frac{75}{3} = 25$ $\displaystyle \frac{6+9+60 }{3}= \frac{75}{3} = 25$

The answer is $\displaystyle 25$ .

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Example Question #145 : How To Find Mean

Find the mean of the following dataset: $\displaystyle [2,9,11,36,4]$

Possible Answers:

$\frac{72}{5}$ $\displaystyle \frac{72}{5}$

$\displaystyle 12$

$\displaystyle 13$

$\textup{There is no mean.}$

$\frac{62}{5}$ $\displaystyle \frac{62}{5}$

Correct answer:

$\frac{62}{5}$ $\displaystyle \frac{62}{5}$

Explanation:

The mean is the average of all the numbers in the set of data.

Add all the numbers.

$\displaystyle 2+9+11+36+4 = 62$

Divide this number by the total numbers in the dataset.

The answer is: $\frac{62}{5}$ $\displaystyle \frac{62}{5}$

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Example Question #146 : How To Find Mean

Find the mean of the following set of numbers (round to the nearest tenth):

$\displaystyle 2,3,4,5,6,12,13,14,15,16,17,18$

Possible Answers:

10.3 $\displaystyle 10.3$

12.4 $\displaystyle 12.4$

10.2 $\displaystyle 10.2$

10.4 $\displaystyle 10.4$

11.4 $\displaystyle 11.4$

Correct answer:

10.4 $\displaystyle 10.4$

Explanation:

To calculate the mean of any set of n numbers, add each of the numbers together, then divide the sum by n.

The best answer is:

10.4 $\displaystyle 10.4$

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Example Question #147 : How To Find Mean

Find the mean of the following set of numbers (round to the nearest tenth):

$\displaystyle 20,22,30,33,40,44$

Possible Answers:

$\displaystyle 29$

31.5 $\displaystyle 31.5$

$\displaystyle 31$

$\displaystyle 32$

30.5 $\displaystyle 30.5$

Correct answer:

31.5 $\displaystyle 31.5$

Explanation:

To calculate the mean of any set of n numbers, add each of the numbers together, then divide the sum by n.

The best answer is:

31.5 $\displaystyle 31.5$

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Example Question #148 : How To Find Mean

Find the mean of the following set of numbers (round to the nearest tenth):

$\displaystyle 10,11,12,13,14,21,27,50$

Possible Answers:

19.5 $\displaystyle 19.5$

19.7 $\displaystyle 19.7$

20.1 $\displaystyle 20.1$

19.8 $\displaystyle 19.8$

20.2 $\displaystyle 20.2$

Correct answer:

19.8 $\displaystyle 19.8$

Explanation:

The best answer is:

19.8 $\displaystyle 19.8$

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Example Question #149 : How To Find Mean

Find the mean of the following set of numbers (round to the nearest tenth):

$\displaystyle 61,62,63,71,72,73$

Possible Answers:

$\displaystyle 67$

$\displaystyle 69$

$\displaystyle 70$

$\displaystyle 68$

$\displaystyle 57$

Correct answer:

$\displaystyle 67$

Explanation:

To calculate the mean of any set of n numbers, add each of the numbers together, then divide the sum by n.

The best answer is:

$\displaystyle 67$

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Example Question #1574 : Algebra 1

Find the mean in the given data set.

$\displaystyle 1, 2, 6, 4, 1, 5, 1, 6, 10$

Possible Answers:

$\displaystyle 6$

$\displaystyle 1$

$\displaystyle 9$

$\displaystyle 4$

$\displaystyle 5$

Correct answer:

$\displaystyle 4$

Explanation:

To find the mean of a data set, we are finding the average. To do this, we add all the numbers in the set together and divide by the quantity of numbers. So,

$\text{mean} = \frac{\text{sum of numbers}}{\text{quantity of numbers}}$ $\displaystyle \text{mean} = \frac{\text{sum of numbers}}{\text{quantity of numbers}}$

$\text{mean} = \frac{1+2+6+4+1+5+1+6+10}{9}$ $\displaystyle \text{mean} = \frac{1+2+6+4+1+5+1+6+10}{9}$

$\text{mean} = \frac{36}{9}$ $\displaystyle \text{mean} = \frac{36}{9}$

$\text{mean} = 4$ $\displaystyle \text{mean} = 4$

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Algebra 1 : How to find mean

Study concepts, example questions & explanations for Algebra 1

All Algebra 1 Resources

Example Questions

Example Question #141 : How To Find Mean

Example Question #142 : How To Find Mean

Example Question #143 : How To Find Mean

Example Question #144 : How To Find Mean

Example Question #145 : How To Find Mean

Example Question #146 : How To Find Mean

Example Question #147 : How To Find Mean

Example Question #148 : How To Find Mean

Example Question #149 : How To Find Mean

Example Question #1574 : Algebra 1

All Algebra 1 Resources

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