Find mean

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6th Grade Math › Find mean

Questions 1 - 10
1

Find the mean of the data set provided:

Screen shot 2016 04 05 at 8.55.18 am

Explanation

In order to answer this question correctly, we need to recall the definition of mean:

Mean: The mean of a data set is the average of the numbers in a data set.

In order to calculate the mean we must first add up all of the numbers in the data set:

Next, we need to divide by the number of addends, or the number of numbers in the data set:

The mean for this data set is

2

Give the mean of the data set (nearest tenth, if applicable):

Explanation

Add the six elements and divide the sum by 6:

3

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?

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 .

4

Find the mean, rounded to the nearest hundredth, of the data set provided:

Screen shot 2016 04 05 at 10.03.05 am

Explanation

In order to answer this question correctly, we need to recall the definition of mean:

Mean: The mean of a data set is the average of the numbers in a data set.

In order to calculate the mean we must first add up all of the numbers in the data set:

Next, we need to divide by the number of addends, or the number of numbers in the data set:

The mean, rounded to the nearest hundredth, for this data set is

5

Find the mean of this set of numbers:

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

Explanation

First, add the numbers in the set:

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

Answer: The mean is 5745.

6

Find the mean of the data set provided:

Screen shot 2016 04 05 at 10.19.45 am

Explanation

In order to answer this question correctly, we need to recall the definition of mean:

Mean: The mean of a data set is the average of the numbers in a data set.

In order to calculate the mean we must first add up all of the numbers in the data set:

Next, we need to divide by the number of addends, or the number of numbers in the data set:

The mean for this data set is

7

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?

Explanation

First, add up all of the prices:

Then, divide .

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

8

Find the mean, rounded to the nearest hundredth, of the data set provided:

Screen shot 2016 04 05 at 9.44.17 am

Explanation

In order to answer this question correctly, we need to recall the definition of mean:

Mean: The mean of a data set is the average of the numbers in a data set.

In order to calculate the mean we must first add up all of the numbers in the data set:

Next, we need to divide by the number of addends, or the number of numbers in the data set:

The mean, rounded to the nearest hundredth, for this data set is

9

In my town, a gallon of gas costs $3.47, $3.79 and $3.60 in three different stations. What is the average price of a gallon of gas in my town?

Explanation

First, add all of the prices:

Then, divide by 3 (total number of stations)

Answer: The average price for a gallon of gas in my town is

10

Find the mean for this set of numbers:

6366, 6336, 6366, 6633, 6333, 6363, 6669

Explanation

First, add all the numbers in the set:

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

Answer: The mean is 6438

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