How to find mean - SSAT Middle Level Quantitative

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Find the mean of the following set of numbers:

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The mean is equal to the sum of the values divided by the total number of values.

$mean=\frac{34+56+73+43+80+15+26}{7}$=46.7$

Find the mean in this set of numbers:

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

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First add all the numbers:

Then, divide that number by 7:

$64,092\div 7=9156$

Answer: The mean is 9156

Find the average of these amounts:

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

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First, add all the amounts:

Then, divide by 4:

$181.24\div 4=45.31$

Answer: The average is 45.31

Find the mean of this set of numbers:

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First, add the numbers:

Then, divide by 7:

$3465\div 7=495$

Find the mean in this set of numbers:

3343, 4434, 4334, 3343, 4343, 3434, 3334

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First, add all the numbers in this set:

Then, divide by 7 (the amount of numbers in this set):

$26565 \div 7=3795$

Answer: The mean is 3795

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?

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If the average of 4 books was 10, then the total number of pages was $4\times10 =40$ . Adding in the 20 new pages, but now dividing by 5 you get .

On the first four exams, Charley scored 92, 88, 76, and 74. Charley wants to have a test average of 85%. What must Charley score on the fifth exam to average 85%?

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The summation of the first four exams equals 330. Using the equation for average, Charley needs to get a 95 on the last exam.

$$\frac{330+x}{5}$=85$

Jason has taken five tests this quarter in school. What is his average if his grades for the five tests are 81, 78, 91, 88 and 93?

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First add up all of the scores:

Then, divide that number by the total number of tests that Jason took:

$431\div 5=86.2$

Answer: Jason's average is 86.2

Olivia is considering buying a new car. She is looking at three different cars. The price for the three cars is $\$8,789.00$ , $\$6,250.00$ and $\$9,342.00$ , respectively. What is the average price of a car Olivia is considering?

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First add up the prices of each of the cars:

Then divide that number by the total number of cars:

$24,381\div 3=8,127.00$

Answer: The average price of a car Olivia is considering is $\$8,127.00$

Find the mean of this set of numbers:

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First, add the three numbers:

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

$2520 \div 3=840$

The answer is

Britney is shopping for shorts. What is the average price of the shorts Britney is considering buying if their prices are $7.99, $10.99, $12.99 and $9.99?

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First, add the the prices of the shorts:

Then, divide that amount by the total number of shorts:

$41.96\div 4=10.49$

The answer is $\$ 10.49$ .

Find the mean of this set of numbers:

54, 41, 99, 120, 66.

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Firrst, add the numbers:

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

$380\div 5=76$

Answer: The mean is 76.

Find the mean of this set of numbers:

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First add all the numbers; then, divide by the amount of numbers in the set:

$20956\div 4=5239$

Answer: The mean is .

Find the mean of this set of numbers:

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First, add the numbers in the set:

Then divide by the amount of numbers in the set:

$2730\div 5=546$

Answer: The mean is .

Find the average of this set of numbers:

521, 834, 754, 902, 899

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First, add all the numbers in this set:

Divide, 3910 by the total amount of numbers in the set:

$3910\div 5=782$

Answer: The average is 782.

Find the mean in this set of numbers:

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

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First, add all the numbers in this set:

Then, divide that amount by the total number in the set:

$36491\div 7=5213$

Answer: The mean is 5213.

Adrienne is trying on dresses for prom. The dresses she likes each cost $\$129$ , $\$134$ , $\$127$ and $\$132$ , respectively. What is the average dress price that Adrienne is considering?

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First, add up all of the dress prices:

Then, divide by the number of dresses:

$522 \div 4=130.50$

Answer: The average dress price is $\$130.50$

It rained 2 inches on Saturday, 4 inches on Sunday, 3, inches on Monday, and 3 inches on Tuesday. On average, how many inches did it rain each day?

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Find the total inches of rain first:

Then, divide by the number of days:

$12\div 4=3$ .

Therefore, on average, it rained 3 inches a day.

Find the average of this set of numbers:

2521, 2512, 2525, 2552, 2551, 2525, 2517

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First, add all the numbers in this set:

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

$17703\div 7=2529$

Answer: The average is

In my town, a gallon of milk costs $3.21, $3.39 and $3.51 in three different stores. What is the average price of a gallon of milk in my town?

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First, add all of the prices:

Then divide, that amount by 3 (number of stores in town):

$10.11\div 3=3.37$

Answer: The average price of a gallon of milk is $\$3.37.$