ISEE Middle Level Math : How to find mean

Study concepts, example questions & explanations for ISEE Middle Level Math

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Example Questions

Example Question #31 : Mean

In the first grade, there are three classrooms. The three classes have 24, 29 and 31 students in them. What is the average number of students in a first grade class?

Possible Answers:

Correct answer:

Explanation:

First, add up the number of students:

Then, divide by 3:

 

Example Question #32 : Mean

Alex played the piano for 35 minutes on Monday, 42 minutes on Wednesday and 37 minutes on Thursday. On average, how many minutes did Alex play the piano on each day?

Possible Answers:

 

Correct answer:

 

Explanation:

First add up the numbers:

Then, divide by 3, because Alex played piano on three different days:

Answer: 38 minutes

Example Question #33 : Mean

Find the mean of this set of numbers:

Possible Answers:

Correct answer:

Explanation:

First, add up all the numbers in the set:

Then, divide by 7, because there are seven numbers in the data set:

Example Question #34 : Mean

Jason has taken five tests this quarter in school. What is his average if his grades for the five tests are 81, 78, 91, 88 and 93?

Possible Answers:

 

Correct answer:

Explanation:

First add up all of the scores:

Then, divide that number by the total number of tests that Jason took:

Answer: Jason's average is 86.2

Example Question #35 : Mean

Find the mean in this set of numbers:

Possible Answers:

Correct answer:

Explanation:

First, add the numbers in the set:

Then, divide by :

 

Example Question #36 : Mean

Find the mean of the following set of numbers:

Possible Answers:

40.9

54.5

46.7

43

Correct answer:

46.7

Explanation:

The mean is equal to the sum of the values divided by the total number of values.

Example Question #36 : Mean

What is the mean of the following numbers?

Possible Answers:

Correct answer:

Explanation:

The mean can be determined by dividing the sum of the values by the total number of values.

Example Question #37 : Mean

Find the mean in this set of numbers:

Possible Answers:

Correct answer:

Explanation:

First, add all the numbers in this set:

Then, divide by 5:

Answer: The mean is 594.

Example Question #479 : Ssat Middle Level Quantitative (Math)

Find the mean in this set of numbers:

Possible Answers:

Correct answer:

Explanation:

First, add all the numbers in this set:

Then, divide by 5: 

Answer: The mean is 251.

Example Question #38 : Mean

Find the mean in this set of numbers:

 

Possible Answers:

Correct answer:

Explanation:

First, add all the numbers in the set: 

Then, divide by the total amount of numbers in the set:

Answer: The mean is  

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