ISEE Middle Level Quantitative : Data Analysis

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

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Example Questions

Example Question #10 : How To Find 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?

Possible Answers:

Correct answer:

Explanation:

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 : How To Find 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?

Possible Answers:

Correct answer:

Explanation:

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): 

Possible Answers:

Correct answer:

Explanation:

Add the six elements and divide the sum by 6:

Example Question #11 : How To Find Mean

Find the mean of this set of numbers:

54, 41, 99, 120, 66.

Possible Answers:

Correct answer:

Explanation:

Firrst, add the numbers:

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

Answer: The mean is 76.

Example Question #4 : Data Analysis

Give the mean of the following eight scores: 

Possible Answers:

Correct answer:

Explanation:

Divide the sum of the scores by eight:

Example Question #1 : Find Measures Of Center, Variability, And Patterns In Data: Ccss.Math.Content.6.Sp.B.5c

Give the mean of the following nine scores: 

Possible Answers:

Correct answer:

Explanation:

Divide the sum of the scores by nine:

Example Question #31 : Data Analysis

The average age of 4 people is 12.  What will be the sum of their ages in 3 years?

Possible Answers:

Correct answer:

Explanation:

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 : Find Mean

Give the mean of the following data set:

Possible Answers:

Correct answer:

Explanation:

Since there are 16 elements, divide their sum by 16 to get the mean:

Example Question #1 : Find Mean

Find the average of this set of numbers:

521, 834, 754, 902, 899

Possible Answers:

Correct answer:

Explanation:

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 #2 : Find Mean

Find the mean in this set of numbers:

5570, 4886, 5226, 4120, 6561, 4120, 6008

Possible Answers:

Correct answer:

Explanation:

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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