Basic Arithmetic : Mean
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Example Questions
Example Question #71 : Statistics And Probability
Find the mean for the following set of numbers:
The mean is the same as the average. To find the mean, use the following formula:
Example Question #21 : Mean
Find the mean of the following set of numbers:
Find the mean of the following set of numbers:
Finding the mean of a number set is essentially finding the average.
Begin by summing the numbers, then divide by the total number of terms.
Now, since there are 12 terms in the series, divide by 12
So our mean is 104.5
Example Question #200 : Statistics And Probability
Find the mean of the following data set:
Find the mean of the following data set:
Whenever we are working with a data set, it can be helpful to put the terms in order:
Now that our terms are in order, we can do all sorts of things with them.
In this case, we need to find the mean. This is essentially the same as the average.
Begin by finding the sum of our terms.
Now, because we have ten terms, we need to divide by 10
Example Question #291 : Basic Arithmetic
Sally's algebra grade depends on three unit tests and a final exam. The grade for the final exam is weighted to equal the grade of two unit tests. What is the minimum grade that Sally must get on her final exam in order to have a class average of 
The course grade average is calculated by using Sally's three test scores and final exam. student must score at least an average of 
Given that the average is calculated using three test scores and a final weighted as two regular tests, we can write the following equation.
Let's use these equations to construct an inequality where we will substitute in our known values and let a variable, 
Sally needs to at least score a 
Example Question #22 : Mean
In her last 
To find the average, add up all the values you are given and divide by the number of values there are.
18 + 12 + 22 + 24 + 14 = 90, the sum of her total points.
And 90/5 = 18, which is her average.
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