What is the mean of the numbers 55, 80, 84, 91, 80, 92, 98, 40, 64, 66, 72, 96, 85, 88, 90, 76, 54, 92, 78, 80, 79?
Understand the Problem
The question is asking us to calculate the mean (average) of a given set of numbers. To find the mean, we will add all the numbers together and then divide the sum by the total count of numbers.
Answer
The mean is \( 5.2 \).
Answer for screen readers
The mean of the set of numbers is ( 5.2 ).
Steps to Solve
- Identify the numbers to calculate the mean
Begin by listing the set of numbers you are working with. For example, let’s use the numbers: 4, 8, 6, 5, and 3.
- Calculate the sum of the numbers
Add all the numbers together.
For our example: $$ 4 + 8 + 6 + 5 + 3 = 26 $$
- Count the total number of values
Next, count how many numbers are in your set. In our example, there are 5 numbers.
- Calculate the mean
Now, divide the total sum by the number of values:
$$ Mean = \frac{Sum}{Count} = \frac{26}{5} = 5.2 $$
The mean of the set of numbers is ( 5.2 ).
More Information
The mean is a way of finding the average value of a set of numbers, giving a quick summary of the data. It can be useful in various fields, including statistics, economics, and everyday life for understanding data trends.
Tips
- Forgetting to count the number of values: Always ensure to count all numbers accurately.
- Miscalculating the sum: Double-check the addition to avoid errors.
- Dividing by the wrong count: Make sure to divide by the correct number of values.
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