Mean - SSAT Middle Level Quantitative

The mean of a set is found by finding the sum of the set and then dividing by the number of items in the set. Given that both of her parents are 45 years old, that Maria is 5 years old, and that her brother is 3 years old (being 2 years younger than she is), the mean is calculated using this equation:

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

First add all the numbers in the set:

Then divide by the amount of numbers in the set. In this case, there are five:

Answer:

First, add all of the terms together:

Then, divide the sum by the number of terms in the set:

Answer:

The mean is the average of the set.

First sum up the numbers:

Then divide the sum by the number of elements in the set:

Answer:

First add all the numbers:

Then, divide that number by 7:

Answer: The mean is 9156

First add all the numbers in the set:

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

Answer:

First add all the numbers in this set:

Then divide by the amount of numbers in this set:

Answer:

First, add all the amounts:

Then, divide by 4:

Answer: The average is 45.31

First order the numbers from least to greatest:

Then identify the middle number:

Answer:

The mean is the average of the set.

First add up the numbers:

Then divide by the number of elements in the set:

Answer:

First add all the numbers in the set:

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

Answer:

First, add the numbers:

Then, divide by 7:

First, add all the numbers in this set:

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

Answer:

The mean is the average.

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

Then, divide by the number of elements in the set:

Answer:

First, add all the numbers in this set:

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

Answer:

First add all the numbers from the set:

Then divide by the amount of numbers in the set:

Answer:

First, add all the numbers in this set:

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

Answer: The mean is 3795

If 15 students got an average score of 7, and 1 student got a score of 0, the average score of the 16 students can be found with this equation: