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 #11 : Mean

Lori walks her dog for 13 minutes on Monday, 6.5 minutes on Wednesday and 10.5 on Friday. On average, how long are Lori's walks with her dog?

Possible Answers:

Correct answer:

Explanation:

First, add all the lengths of time:

Then, divide by 3 (the amount of days Lori walked her dog):

Answer: 10 minutes

Example Question #451 : Ssat Middle Level Quantitative (Math)

Find the average of these amounts:

$34.78, $21. 69, $76.89, $47.88

Possible Answers:

Correct answer:

Explanation:

First, add all the amounts:

Then, divide by 4:

Answer: The average is 45.31

Example Question #21 : Data Analysis

Find the mean of this set of numbers:

5855, 5588, 5585, 5858, 5885, 5559, 5885

Possible Answers:

Correct answer:

Explanation:

First, add the numbers in the set:

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

Answer: The mean is 5745.

Example Question #11 : Mean

Find the mean of the following set of numbers:  227, 215, 206, 238, 249

Possible Answers:

Correct answer:

Explanation:

Add the numbers, and divide by 5:

Example Question #452 : Ssat Middle Level Quantitative (Math)

Mason went on a road trip Saturday-Monday. Each day he travelled 76 miles, 89 miles and 72 miles. What was the average number of miles Mason travelled each day?

Possible Answers:

Correct answer:

Explanation:

First, add all the miles travelled:

Then, divide by 3:

Answer: On average, Mason travelled 79 miles a day.

Example Question #12 : Mean

Patricia bought three candles for her home. The candles cost $2.78, $3.68, $1.58, respectively. What was the average price of the candles that Patricia bought?

 

Possible Answers:

Correct answer:

Explanation:

First, add all the prices:

Then, divide that amount by 3:

Answer: The average price of a candle is $2.68

Example Question #13 : Mean

Find the mean in this set of numbers:

9078, 9008, 9800, 9099, 9009, 9090, 9008

Possible Answers:

Correct answer:

Explanation:

First add all the numbers:

Then, divide that number by 7:

Answer: The mean is 9156

Example Question #453 : Ssat Middle Level Quantitative (Math)

Elizabeth went food shopping today. She spent $32.78, $21.63 and $19.39 at each supermarket. How much did Elizabeth spend, on average, at each supermarket?

Possible Answers:

Correct answer:

Explanation:

First, add the amounts Elizabeth spent at each supermarket:

Then divide by 3 (the number of supermarkets she went to):

Answer: On average, Elizabeth spent $24.60 at each supermarket.

Example Question #22 : Data Analysis

Find the mean in this set of numbers:

Possible Answers:

Correct answer:

Explanation:

First add all the numbers in the set:

Then, divide that number by 5:

Answer: The mean is 619.

Example Question #454 : Ssat Middle Level Quantitative (Math)

Find the mean in this set of numbers:

210, 120, 110, 220, 120

Possible Answers:

Correct answer:

Explanation:

First, add up all of the numbers in the set:

Then, divide:

Answer: The mean is 156.

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