CLASS OBJECTIVE
Know the definition and use of the Functions of a spreadsheet, such as Google Sheet, which are used to improve information analysis and problem solving.
** Class notes**
FUNCTIONS
Today, you know that in a spreadsheet we can use arithmetic operations such as addition, subtraction, multiplication and division, but not all problems will be solved only with this resource.
In all the spreadsheets, there are some instructions already programmed that we can be use to make the job easier. These instructions are called FUNCTIONS.
Functions must always be indicated under certain rules for the spreadsheet to understand. We call these rules Syntax of a Function:
- As in formulas, the first symbol in the cell must be the equal sign (=)
- Immediately after, without spaces, the name of the Function must be indicated.
- Parentheses will always open and close at the end of the name.
- In most cases, the data with which the Function will operate will be indicated within the parentheses. This information is called "argument".
- When it is necessary to add more than one argument, they will be separated by commas.
- When all the arguments are within a range (adjacent cells) we can select then with the pointer, by dragging over them.
Examples of Functions
= SUM ()
An alternative to add numerical data is to use this function.
An addition like the following
= A1 + A2 + A3 + A4 + A5 + A6 + A7 + A8 + A9
can be replaced by
= SUM (A1: A9)
= PRODUCT ()
As in addition, a multiplication could be replaced for the Producto function as follows:
= A3 * B4 * C5
With a function it would be
= PRODUCT (A3, B4, C5)
=AVERAGE()
To calculate an average we must do more than one operation (addition and division), but there is already a function that does all the work, and it is not even necessary to consider the hierarchy of operations.
= (G5 + G6 + G7 + G8 + G9) / 5
can be replaced by
= AVERAGE (G5: G9)
There are hundreds of functions already programmed and not all of them do mathematical calculations, we will eventually present more functions.
ACTIVITY
As on other occasions, you must create the table with the format shown below to carry out today's activity,
in this table you will put into practice what you have learned in the example and thus solve everything that
is asked:
Once opened, the first thing we will do is solve with arithmetic operations. We will use multiplication to obtain the requested results. Note that the existing data correspond to consumption per minute and the intake of 100 grams.
- Now, instead of the formula, you will use the Function =PRODUCT ()
Then you will do a statistical analysis. For this, averages will be calculated using formulas, by categories, as shown in the image below.
- Later, you will calculate the average of each category using the Function =PROMEDIO().
- Daily activities
- Sport activities
- Vegetable products
- Animal products
- Processed products

Once finished, rename the file to "BASIC FUNCTIONS" and submit it by Classroom.
As you already investigated in the previous homework, there are not only the functions of =SUM, =PRODUCT, =AVERAGE, =MAX and =MIN, we have many more options such as the counting functions that we will practice in later activities, lets do it some examples in class.
NOTES AND REFERENCES
It is important to clarify that the information used in this exercise is real, although not completely accurate.
the references from which the information was obtained are presented below in case you want to review
them and I suggest you consult an expert if you have questions or if you want to know more about your
diet.
http://www.antiidolo.com/Ar-Salud/390.Tabla-calorias-por-ejercicio-3.asp?sec=13#.YCbyw2j0nIW
https://www.foodspring.es/magazine/tabla-calorica
http://www.imss.gob.mx/salud-en-linea/apps-sano/calculadora-calorias#tmb