Algebra 1 : How to find mean

Study concepts, example questions & explanations for Algebra 1

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Example Questions

Example Question #131 : How To Find Mean

Find the mean of the following set of numbers:

Possible Answers:

None

Correct answer:

Explanation:

To find the mean, simply add the numbers and divide by their quantity. Thus,

Example Question #132 : Statistics And Probability

Find the mean:  

Possible Answers:

Correct answer:

Explanation:

The mean is the sum of all numbers in the set divided by the total of numbers in the set.

Add all the percentages.

Divide the percentage by three.

The value of  is equivalent to  or .

The answer is .

Example Question #133 : Statistics And Probability

What is the class average if the students have the following scores?

Possible Answers:

Correct answer:

Explanation:

The problem is asking us to solve for the class average. This is another term for mean. In order to find the mean, we need to add up all of the numbers and divide by the number of numbers given. 

When we count the number of scores given, we can see there are 13. Therfore, we must divide 1047 by 13 to achieve our final answer. 

Example Question #134 : Statistics And Probability

Tom is driving from Los Angeles to San Francisco. During his drive, he cruise controlled his car for an hour at different speeds. These speeds were 

What was his average speed when he was cruise controlling?

Possible Answers:

Correct answer:

Explanation:

The problem is asking us to solve for the average speed Tom drove. This is another term for mean. In order to find the mean, we need to add up all of the numbers and divide by the number of numbers given. 

When we count the number of time he cruise controlled his car, we can see there are 5. Therfore, we must divide 388 by 5 to achieve our final answer. 

Example Question #135 : Statistics And Probability

Find the mean:  

Possible Answers:

Correct answer:

Explanation:

The mean is the sum of all numbers in the set divided by the total of numbers in the set.

Add all the percentages.

Divide the percentage by three.

The value of  is equivalent to .

The answer is .

Example Question #136 : Statistics And Probability

A class of kindergarteners go to an apple orchard for a field trip. The students are allowed to pick apples. The following is a list of how many apples each student picked. 

What is the average number of apples picked?

Possible Answers:

Correct answer:

Explanation:

The problem is asking us to solve for the average number of apples picked. This is another term for mean. In order to find the mean, we need to add up all of the numbers and divide by the number of numbers given. 

When we count the number of students accounted for, we can see there are 17. Therfore, we must divide 62 by 17 to achieve our final answer. 

Example Question #137 : Statistics And Probability

A group of students recorded data on the amount of rainfall that occurred in their town daily. They recorded the data in inches.

What was the average amount of rainfall?

Possible Answers:

Correct answer:

Explanation:

The problem is asking us to solve for the average amount of rainfall. This is another term for mean. In order to find the mean, we need to add up all of the numbers and divide by the number of numbers given. 

When we count the number of days the students recorded rainfall, we can see there are 8. Therfore, we must divide 30 by 8 to achieve our final answer. 

Example Question #132 : How To Find Mean

Find the mean of the following dataset:  

Possible Answers:

Correct answer:

Explanation:

To find the mean, add all the numbers in the data set and divide by the total amount of numbers given.

Add all the numbers.

Divide this number by four.

The answer is:  

Example Question #133 : How To Find Mean

Find the mean of the following dataset:  

Possible Answers:

Correct answer:

Explanation:

To find the mean, add all the numbers in the data set and divide by the total amount of numbers given.

Add all the numbers.

Divide this number by four.

The answer is:  

Example Question #134 : How To Find Mean

Find the mean of the following set of numbers:

Possible Answers:

Correct answer:

Explanation:

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

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