Algebra 1 : Statistics and Probability

Study concepts, example questions & explanations for Algebra 1

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Example Questions

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?

 

Possible Answers:

Correct answer:

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 . You need to divide the total by , and the answer is .

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

 

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

Example Question #153 : Statistics And Probability

Find the mean of the following:  

Possible Answers:

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.

Divide this number by three to get the mean.

The mean is 1.

Example Question #153 : Statistics And Probability

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,

Example Question #154 : Statistics And Probability

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

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:

Example Question #155 : Statistics And Probability

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

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:

Example Question #156 : Statistics And Probability

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

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:

Example Question #157 : Statistics And Probability

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

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:

Example Question #159 : Statistics And Probability

Find the median of the following dataset:  

Possible Answers:

Correct answer:

Explanation:

Arrange the dataset from least to greatest.

Since there are four numbers, the median is the average of the center two numbers.

Average the two numbers.

The answer is:  

Example Question #160 : Statistics And Probability

Find the mean of the dataset:  

Possible Answers:

Correct answer:

Explanation:

To find the mean, add all the numbers and divide by the total amount of numbers existent in the dataset.  There are a total of three numbers.

Simplify the expression.

The mean of the dataset is:  

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