ISEE Middle Level Quantitative : ISEE Middle Level (grades 7-8) Quantitative Reasoning

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

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Example Questions

Example Question #31 : Mean

Patricia is shopping for a coat. She is considering three coats. Each costs $85.98, $93.29 and $88.99, respectively. What is the average price of a coat she is considering?

 

Possible Answers:

Correct answer:

Explanation:

First, add up all of the prices:

Then, divide .

Answer: The average price of a coat is $89.42.

Example Question #32 : Mean

Find the mean in this set of numbers:

11, 14, 13, 12, 18, 14, 12, 14, 17, 15

Possible Answers:

Correct answer:

Explanation:

First, add up all of the numbers:

Then, divide by ten because there are ten numbers in the set:

Answer: The mean is 14.

Example Question #33 : Mean

Find the mean of this set of numbers:

787, 778, 878, 877, 780

Possible Answers:

Correct answer:

Explanation:

First add up all of the numbers in the set:

Then, divide by five because there are five numbers in the set:

Answer: The mean is .

Example Question #34 : Mean

Norma made 11 Valentine's Day cards on Saturday, 13 on Sunday, and 9 on Monday? On average how many cards did Norma make each day?

Possible Answers:

Correct answer:

Explanation:

First, add the numbers:

Then, divide by 3:

Answer: On average, Norma made 11 cards each day.

Example Question #35 : Mean

Find the mean of this set of numbers:

Possible Answers:

Correct answer:

Explanation:

First, add the numbers:

Then, divide by 7:

 

Example Question #36 : Mean

Find the mean of this set of numbers:

Possible Answers:

Correct answer:

Explanation:

First add the numbers in the set: 

Then, divide by 7:

 

Example Question #37 : Mean

Peter went fishing and caught 5 fish the first hour, 3 fish the second hour, and 4 the last hour. On average, how many fish did Peter catch per hour?

Possible Answers:

Correct answer:

Explanation:

First, add up the three numbers:

Then, divide by 3, because there are three numbers in the data set:

Answer: On average, Peter caught 4 fish per hour.

Example Question #122 : Data Analysis

Consider the data set: 

What is the difference between the mean of this set and the median of this set?

Possible Answers:

Correct answer:

Explanation:

To get the mean, add the numbers and divide by 8:

To get the median, find the mean of the fourth- and fifth-highest elements (the ones in the middle):

The difference is 

Example Question #7 : Data Analysis

What is the mean of the values , , ,

Possible Answers:

Correct answer:

Explanation:

The mean of a set of values can be calculated by adding the values together and dividing by the number of values: 

Example Question #1 : Mean

Adrienne is trying on dresses for prom. The dresses she likes each cost , ,  and , respectively. What is the average dress price that Adrienne is considering?

Possible Answers:

Correct answer:

Explanation:

First, add up all of the dress prices:

Then, divide by the number of dresses:

Answer: The average dress price is 

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