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Algebra 1 : Algebra 1

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

Example Questions

Example Question #65 : Statistics And Probability

$\small 12,33,23,43,23$

Using the data above, find the mean.

Possible Answers:

$\small \frac{125}{5}$

$\small \frac{134}{5}$

$\small \frac{23}{5}$

$\small \frac{143}{5}$

Correct answer:

$\small \frac{134}{5}$

Explanation:

Provided with this set of data:

$\small 12,33,23,43,23$ ,

to find the mean the first step is to add up all of the numbers in the data set:

$\small 12+33+23+43+23 = 134.$

Now we divide that number by the number of data pieces there are, $\small 5.$

So, $\small \frac{134}{5}$ is the mean of this data set.

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Example Question #66 : Statistics And Probability

$\small 9302,390,2938,3940$

Using the data above, find the mode and mean.

Possible Answers:

$\small \small mode = 3, mean = 4,14.25$

$\small \small mode = none, mean = 4,144$

$\small \small mode = none, mean = 4,142.5$

$\small \small mode = 523, mean = 4,142.5$

Correct answer:

$\small \small mode = none, mean = 4,142.5$

Explanation:

Using the data provided:

$\small 9302,390,2938,3940$

find the mean and the mode.

First, the mode is defined as a number that appears more than once. In this set, all four numbers are different, so there is no mode.

To find the mean we first add up all of the values:

$\small 9302+390+2938+3940 = 16570$ .

Next, we divide this total by the amount of data pieces,

$\small 16,570 \div4 = 4,142.5$ .

This is the mean.

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Example Question #61 : How To Find Mean

Find the mean for the following set of numbers:

, , , , and

Possible Answers:

16.6

19.8

22.4

20.6

Correct answer:

20.6

Explanation:

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

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

$\text{Mean}=\frac{2+8+48+15+30}{5}$

$\text{Mean}=\frac{103}{5}$

$\text{Mean}=20.6$

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Example Question #68 : Statistics And Probability

Find the mean for the following set of numbers:

, , , , and

Possible Answers:

0.6

1.2

0.2

-0.4

Correct answer:

0.2

Explanation:

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

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

$\text{Mean}=\frac{(-15)+(-2)+3+6+9}{5}$

$\text{Mean}=\frac{(-17)+18}{5}$

$\text{Mean}=\frac{1}{5}$

$\text{Mean}=0.2$

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Example Question #13 : Basic Statistics

Find the mean for the following set of numbers:

, , 100 , 132 , and

Possible Answers:

Correct answer:

Explanation:

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

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

$\text{Mean}=\frac{45+98+100+132+15}{5}$

$\text{Mean}=\frac{390}{5}$

$\text{Mean}=78$

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Example Question #18 : Mean

Find the mean for the following set of numbers:

, , , and

Possible Answers:

-12.5

-35.5

2.5

-37.1

Correct answer:

-35.5

Explanation:

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

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

$\text{Mean}=\frac{(-98)+(-52)+(-15)+23}{4}$

$\text{Mean}=\frac{(-165)+23}{4}$

$\text{Mean}=\frac{(-142)}{4}$

$\text{Mean}=-35.5$

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Example Question #71 : Statistics And Probability

Find the mean for the following set of numbers:

, , , and 12x

Possible Answers:

8.5x

9.25x

6.5x

7.25x

Correct answer:

7.25x

Explanation:

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

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

$\text{Mean}=\frac{4x+5x+8x+12x}{4}$

$\text{Mean}=\frac{29x}{4}$

$\text{Mean}=7.25x$

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Example Question #71 : Statistics And Probability

Find the mean for the following set of numbers:

, 10y , , and -2y

Possible Answers:

4.25y

5.5y

5.25y

Correct answer:

5.25y

Explanation:

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

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

$\text{Mean}=\frac{5y+10y+8y+(-2y)}{4}$

$\text{Mean}=\frac{23y+(-2y)}{4}$

$\text{Mean}=\frac{21y}{4}$

$\text{Mean}=5.25y$

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Example Question #1491 : Algebra 1

Find the mean for the following set of numbers:

16a , 58a , -80a , , and

Possible Answers:

1.2a

1.6a

2.8a

-0.8a

Correct answer:

1.2a

Explanation:

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

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

$\text{Mean}=\frac{16a+58a+(-80a)+3a+9a}{5}$

$\text{Mean}=\frac{86a+(-80a)}{5}$

$\text{Mean}=\frac{6a}{5}$

$\text{Mean}=1.2a$

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Example Question #75 : 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:

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

$\text{Mean}=\frac{5+48+(-9)+(-8)+(-8)+14}{6}$

$\text{Mean}=\frac{67+(-25)}{6}$

$\text{Mean}=\frac{42}{6}$

$\text{Mean}=7$

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Algebra 1 : Algebra 1

Study concepts, example questions & explanations for Algebra 1

All Algebra 1 Resources

Example Questions

Example Question #65 : Statistics And Probability

Example Question #66 : Statistics And Probability

Example Question #61 : How To Find Mean

Example Question #68 : Statistics And Probability

Example Question #13 : Basic Statistics

Example Question #18 : Mean

Example Question #71 : Statistics And Probability

Example Question #71 : Statistics And Probability

Example Question #1491 : Algebra 1

Example Question #75 : Statistics And Probability

All Algebra 1 Resources

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