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Algebra 1 : Algebra 1

Study concepts, example questions & explanations for Algebra 1

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All Algebra 1 Resources

10 Diagnostic Tests 557 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #146 : Statistics And Probability

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

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

Possible Answers:

12.4

11.4

10.3

10.4

10.2

Correct answer:

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

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Example Question #1571 : Algebra 1

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

20,22,30,33,40,44

Possible Answers:

31.5

30.5

Correct answer:

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

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Example Question #1572 : Algebra 1

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

10,11,12,13,14,21,27,50

Possible Answers:

19.5

19.7

19.8

20.1

20.2

Correct answer:

19.8

Explanation:

The best answer is:

19.8

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Example Question #1573 : Algebra 1

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

61,62,63,71,72,73

Possible Answers:

Correct answer:

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:

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Example Question #150 : Statistics And Probability

Find the mean in the given data set.

1, 2, 6, 4, 1, 5, 1, 6, 10

Possible Answers:

Correct answer:

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,

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

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

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

$\text{mean} = 4$

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Example Question #151 : Statistics And Probability

Mrs. Hooper's Algebra 1 test just completed their 10th test of the year. They were currently studying mean, so Mrs. Hooper gave them the list of scores in the class and asked them to find the mean. What should their answer be if the scores were as listed below?

80, 85, 90, 95, 99, 87, 83, 82, 93, 91, 100, 90, 74, 65, 90

Possible Answers:

86.9

Correct answer:

86.9

Explanation:

The mean means the average of all of the scores. You have to add up all of the scores and divide by the total. If you add up all scores you would get 1304 . You need to divide the total by , and the answer is 86.9333 .

$\frac{80+85+90+95+99+87+83+82+93+91+100+90+74+65+90}{15}$

If you round to the nearest, you would get 86.9 as the mean score.

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Example Question #152 : Statistics And Probability

Find the mean of the following data set:

4, 2, 7, 8, 8, 2, 8, 10, 7

If necessary, round your answer to the nearest whole number.

Possible Answers:

Correct answer:

Explanation:

To find the mean of a data set, we add all the values together and divide by the number of values. In other words

$\text{mean} =\frac{4 + 2 + 7 + 8 + 8 + 2 + 8 + 10 + 7}{9}$

$\text{mean} = \frac{56}{9}$

$\text{mean} = 6.2222...$

$\text{mean} = 6$

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Example Question #1574 : Algebra 1

Find the mean of the following: [-1,9,-5]

Possible Answers:

$\textup{There cannot be negative numbers in the dataset.}$

Correct answer:

Explanation:

The mean is the average of the dataset. Simply add all the numbers and divide by the total amount of numbers in the dataset.

Add the numbers.

-1+9+ (-5) = 3

Divide this number by three to get the mean.

$\frac{3}{3}=1$

The mean is 1.

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Example Question #1575 : Algebra 1

Find the mean of the following set of numbers:

1,1,3,7,7,8,9,12,15

Possible Answers:

Correct answer:

Explanation:

To find the mean, simply add all of them numbers and divide by their quantity. Since there are 9 numbers, I will be dividing by 9. Thus,

$mean=\frac{1+1+3+7+7+8+9+12+15}{9}=\frac{63}{9}=7$

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Example Question #1576 : Algebra 1

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

1,2,3,4,5,6,7,8,9,10

Possible Answers:

6.5

5.5

4.5

Correct answer:

5.5

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:

5.5

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Algebra 1 : Algebra 1

Study concepts, example questions & explanations for Algebra 1

All Algebra 1 Resources

Example Questions

Example Question #146 : Statistics And Probability

Example Question #1571 : Algebra 1

Example Question #1572 : Algebra 1

Example Question #1573 : Algebra 1

Example Question #150 : Statistics And Probability

Example Question #151 : Statistics And Probability

Example Question #152 : Statistics And Probability

Example Question #1574 : Algebra 1

Example Question #1575 : Algebra 1

Example Question #1576 : Algebra 1

All Algebra 1 Resources

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