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Algebra 1 : Algebra 1

Study concepts, example questions & explanations for Algebra 1

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

Example Questions

Example Question #76 : Statistics And Probability

Find the mean for the following set of numbers:

-3c , , , , , and

Possible Answers:

Correct answer:

Explanation:

The mean is the same as the average. To find the mean, use the following formula:

$\text{Mean}=\frac{\text{Sum of all values}}{\text{Number of values}}$

$\text{Mean}=\frac{(-3c)+5c+6c+6c+8c+8c}{6}$

$\text{Mean}=\frac{33c+(-3c)}{6}$

$\text{Mean}=\frac{30c}{6}$

$\text{Mean}=5c$

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Example Question #77 : Statistics And Probability

Find the mean for the following set of numbers:

-45n , , , 15n , 15n , , and

Possible Answers:

12n

Correct answer:

Explanation:

The mean is the same as the average. To find the mean, use the following formula:

$\text{Mean}=\frac{\text{Sum of all values}}{\text{Number of values}}$

$\text{Mean}=\frac{(-45n)+6n+8n+15n+15n+6n+2n}{7}$

$\text{Mean}=\frac{52n+(-45n)}{7}$

$\text{Mean}=\frac{7n}{7}$

$\text{Mean}=n$

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Example Question #73 : Statistics And Probability

Find the mean for the following set of numbers:

, , , and

Possible Answers:

Correct answer:

Explanation:

The mean is the same as the average. To find the mean, use the following formula:

$\text{Mean}=\frac{\text{Sum of all values}}{\text{Number of values}}$

$\text{Mean}=\frac{(-10)+50+6+78}{4}$

$\text{Mean}=\frac{134+(-10)}{4}$

$\text{Mean}=\frac{124}{4}$

$\text{Mean}=31$

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Example Question #71 : Statistics And Probability

Find the mean for the following set of numbers:

, , and

Possible Answers:

Correct answer:

Explanation:

The mean is the same as the average. To find the mean, use the following formula:

$\text{Mean}=\frac{\text{Sum of all values}}{\text{Number of values}}$

$\text{Mean}=\frac{(-100)+45+55}{3}$

$\text{Mean}=\frac{0}{3}$

$\text{Mean}=0$

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Example Question #1501 : Algebra 1

Consider the following set of numbers:

25, 27, 36, 32, 41, 22, 28, 33, 44, 51, 37, 32

Find the mean of the set.

Possible Answers:

33.8

34.7

34.2

Correct answer:

Explanation:

To find the mean of a set of numbers, we add all of the numbers together and then divide by the number of numbers in the set:

25+27+36+32+41+22+28+33+44+51+37+32=408

$\frac{408}{12}=34$

From this we find that the mean of the set is 34.

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Example Question #1502 : Algebra 1

Consider the following set:

15,17,12,13,14,11,14,10,22,16,9

Find the mean of the set.

Possible Answers:

14.1

13.9

13.5

13.2

Correct answer:

13.9

Explanation:

To find the mean of a set of numbers, we add all of the numbers together and then divide by the number of numbers in the set:

15+17+12+13+14+14+11+10+22+16+9=153

$\frac{153}{11}=13.9$

From this we can find that the mean is 13.9

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Example Question #82 : Statistics And Probability

What is the mean of , , , and ?

Possible Answers:

$\frac{25}{2}$

$\frac{19}{2}$

$\frac{21}{2}$

$\frac{27}{2}$

$\frac{23}{2}$

Correct answer:

$\frac{23}{2}$

Explanation:

In order to find the mean of a set of numbers, we divide the sum of the numbers by the amount of numbers in the set. Since we have numbers in the set, we can calculate the mean as the following:

$\frac{10+11+12+13}{4}$

$=\frac{21+25}{4}$

$=\frac{46}{4}$

$=\frac{23}{2}$

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Example Question #83 : How To Find Mean

What is the mean of , , , , and ?

Possible Answers:

$\frac{8}{5}$

$\frac{6}{5}$

$-\frac{6}{5}$

$-\frac{8}{5}$

Correct answer:

$\frac{6}{5}$

Explanation:

In order to find the mean of a set of numbers, we divide the sum of the numbers by the amount of numbers in the set. Since we have numbers in the set, we can calculate the mean as the following:

$\frac{2+(-4)+6+(-8)+10}{5}$

$=\frac{(-4)+8+(-8)+10}{5}$

$=\frac{(-4)+10}{5}$

$=\frac{6}{5}$

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Example Question #84 : How To Find Mean

What is the mean of , , , and ?

Possible Answers:

$\frac{1}{4}$

$\frac{1}2{}$

$-\frac{1}{4}$

$-\frac{1}{2}$

Correct answer:

$-\frac{1}{4}$

Explanation:

In order to find the mean of a set of numbers, we divide the sum of the numbers by the amount of numbers in the set. Since we have numbers in the set, we can calculate the mean as the following:

$\frac{1+(-1)+2+(-3)}{4}$

$=\frac{2+(-3)}{4}$

$=-\frac{1}{4}$

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Example Question #83 : How To Find Mean

What is the mean of 5,4,3, and ?

Possible Answers:

$\frac{5}{2}$

$\frac{9}{2}$

$\frac{11}2{}$

$\frac{7}{2}$

$\frac{3}{2}$

Correct answer:

$\frac{7}{2}$

Explanation:

In order to find the mean of a set of numbers, we divide the sum of the numbers by the amount of numbers in the set. Since we have numbers in the set, we can calculate the mean as the following:

$\frac{5+4+3+2}{4}$

$=\frac{9+5}{4}$

$=\frac{14}{4}$

$=\frac{7}{2}$

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Algebra 1 : Algebra 1

Study concepts, example questions & explanations for Algebra 1

All Algebra 1 Resources

Example Questions

Example Question #76 : Statistics And Probability

Example Question #77 : Statistics And Probability

Example Question #73 : Statistics And Probability

Example Question #71 : Statistics And Probability

Example Question #1501 : Algebra 1

Example Question #1502 : Algebra 1

Example Question #82 : Statistics And Probability

Example Question #83 : How To Find Mean

Example Question #84 : How To Find Mean

Example Question #83 : How To Find Mean

All Algebra 1 Resources

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