These lessons, with videos, examples and step-by-step solutions help SAT students to review arithmetic mean or average.
The following diagram shows how to find the arithmetic mean or average. Scroll down the page for more examples and solutions on arithmetic mean or average.
How to find the arithmetic mean or average?
Solving Math Problems : Finding the Mean
In math, the mean is found by adding pieces of data together and dividing by the number of pieces of data.
Find the mean of 2, 8, 13, 4, 21, 18
SAT Math - Averages (Arithmetic Mean)
This is an averages problem from the SAT online study course, practice test #1, section 4, problem 18.
The average (arithmetic mean) of 3 numbers is x. If one of the numbers is y, what is the average of the remaining 2 numbers in terms of x and y?
(B) (2y - x)/3
(C) (2x - y)/3
(D) (3y - x)/2
(E) (3x - y/2
SAT Math Review: Arithmetic Mean (Average)
If a = 3b = 6c, what is the average (arithmetic mean) of a, b, and c in terms of a?
SAT Math Lesson: Arithmetic Mean
SAT Math - Averages
108. Lisa took four chemistry exams and received an average score of 82. If she scores a 97 on her next chemistry exam, what will be her average for all five exams?
109. Gerald’s average score for nine tests was 96. If the sum of the scores of two of his tests was 178, then what was his average for the other seven tests?
110. If the average of eight numbers is 46 and the average of three of these is 51, what is the average of the other five numbers?
111. There are 7 numbers in set X. The average of the first 2 numbers is 79 and the sum of the last 5 numbers is 290. What is the average of all 7 numbers in set X?
112. The average of a list of 5 numbers is y. When an additional number is added to the list, the average of all numbers is y + 3. Which of the following is the value of the number added to the list in terms of y?
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