Class: 26 of September of 2012

Trying to address questions with a scientifical method

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Question 1:

How many acquaintances, friends and close relationships can one person really maintain in live?

Information

When you are older you have more acquaintances. As time passes by, a lot of relationships are forgot.
We may want to know:

• What is a friend, a close relationship and an acquaintances.
• Are there previous studies?

Hypothesis

As you are older you have know more people.
The amount of social relationship is higher in women

Experiment

-Choose people of different ages (10,20,30,40…80 years) and different genders.

-Show them different photos of their acquaintances and friends.
-Look whose of them they remember.
 
-Using surveys to ask them their opinions. 

Constructing a table

Eudald, Gemma and Maria

Question 2:

Per cada 4,5 km en tenim 3,5 litres de gasolina.

Per cada 10 km en tenim 7,781.

Si la gasolina està a 1,53 euros ens costen 10 km 11,9 euros.

Informació

-El preu de la gasolina és de 1,53 euros.

-Per cada 4,5 km gastem 3,5 L de gasolina.

Hipòtesis

- Si per cada 4,5 km gastem 3,5 L, per cada 10 km gastem 7,78 L.

Experiment

Posem 11,90 euros de gasolina i fem 10 km a veure quan duren. Es podria provar en diferents terrenys: pla, baixada, pujada, sorra...

MISTAKES THAT ARE EASY TO DO WHEN ANSWERING A QUESTION

1. Your opinion is your opinion, not a fact.

2. One fact alone is not everything

3. Dispersion is important

4. Correlation doesn’t mean cause-effect.