What is the average symbol in mathematics

The average is equal to 6. Question 2 Find the average of the given numbers 6, 13, 17, 21, The average is equal to Question 3 If the age of 10 students in a football team is 12, 13, 11, 12, 13, 12, 11, 12, 12, 2. Then find the average age of the students in the football team. Solution Given, the age of students are 12, 13, 11, 12, 13, 12, 11, 12, 12 , 2. The average age of the students of the football team is equal to Question 4 If the heights of females in a class are 5.

Then find the average height of females of the class. The same calculation can be used to work out the average of any set of numbers, for example the average salary in an organisation:.

You can ignore the ,'s when calculating as long as you remember to add them back on at the end. Sometimes we may know the total of our numbers but not the individual numbers that make up the total.

We could record average sales figures each month to help us predict sales for future months and years and also to compare our performance.

The first thing to do with this problem is to convert the time into minutes — time does not work on the decimal system as there are 60 minutes in an hour and not Therefore we need to standardise our units before we can start:. The following example formula, assumes your data is in cells A1 to A When there are an even number of numbers there is no single middle number but a pair of middle numbers.

The median refers to a single number so we calculate the mean of the two middle numbers:. The Mode is the most frequently-occurring value in a set of values. The mode is interesting as it can be used for any type of data, not just numbers. In this example, assume that you have bought a pack of balloons, the pack is made up of 5 different colours, you count each colour and find that you have:. The mode of our sample of balloons is purple as there are more purple balloons 25 than any other colour balloon.

Data sets with more than two modes are referred to as multi-modal data sets. If a data set contains only unique numbers then calculating the mode is more problematic. As an Amazon Associate we earn from qualifying purchases.

Want to cite, share, or modify this book? This book is Creative Commons Attribution License 4. Skip to Content Go to accessibility page. Introductory Business Statistics 2. My highlights. Table of contents. Previous Next.