All ISEE Middle Level Quantitative Resources
Example Questions
Example Question #1 : Mean
June ran 2 miles Monday, 3 miles Tuesday, 3 miles Thursday, and 2 miles Friday. How many miles did June run on average from Monday to Friday?
You can find the average of a set of numbers by adding up all the numbers in that set and dividing by how many numbers you added total. Here is a summary of our set:
Monday: 2 miles
Tuesday: 3 miles
Wednesday: 0 miles
Thursday: 3 miles
Friday: 2 miles
Keep in mind that we are looking for the average number of miles June ran Monday through Friday, and that there are 5 days in that period. You must also account for the 0 miles that June ran on Wednesday.
June ran a total of 10 miles during that 5 day period. You must then divide by the number of days in order to get the average.
Example Question #11 : Mean
In a group of 4 books, the average number of pages is is 10. Juan adds a book with 20 pages to the group. What is the new average number of pages?
If the average of 4 books was 10, then the total number of pages was . Adding in the 20 new pages, but now dividing by 5 you get .
Example Question #1 : How To Find Mean
Give the mean of the data set (nearest tenth, if applicable):
Add the six elements and divide the sum by 6:
Example Question #2 : How To Find Mean
Find the mean of this set of numbers:
54, 41, 99, 120, 66.
Firrst, add the numbers:
Then, divide by the amount of numbers in the set:
Answer: The mean is 76.
Example Question #21 : Data Analysis And Probability
Give the mean of the following eight scores:
Divide the sum of the scores by eight:
Example Question #12 : Mean
Give the mean of the following nine scores:
Divide the sum of the scores by nine:
Example Question #13 : Mean
The average age of 4 people is 12. What will be the sum of their ages in 3 years?
The current sum of their ages is . Since all 4 people will gain 3 years in age, we have to add 12 to the current sum.
Example Question #1 : How To Find Mean
Give the mean of the following data set:
Since there are 16 elements, divide their sum by 16 to get the mean:
Example Question #12 : Mean
Find the average of this set of numbers:
521, 834, 754, 902, 899
First, add all the numbers in this set:
Divide, 3910 by the total amount of numbers in the set:
Answer: The average is 782.
Example Question #22 : Data Analysis And Probability
Find the mean in this set of numbers:
5570, 4886, 5226, 4120, 6561, 4120, 6008
First, add all the numbers in this set:
Then, divide that amount by the total number in the set:
Answer: The mean is 5213.
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