All ISEE Middle Level Quantitative Resources
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?
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
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
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?
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:
First, add the numbers:
Then, divide by 7:
Example Question #36 : Mean
Find the mean of this set of numbers:
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?
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?
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 , , , ,
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?
First, add up all of the dress prices:
Then, divide by the number of dresses:
Answer: The average dress price is