STATISTICS - 1ST MID

is a branch of Applied Mathematics specializing in procedures for collecting, organizing, presenting, analyzing, and interpreting data from observations

• Probability
• Algebra
• Calculus
• Statistics

What is an example of a statistical question

• What is the capital of France?
• What is the average height of students in a school?
• How many planets are in the solar system?
• What is the color of the sky?

Example of a non statistical question

• What is your favorite color?
• What is the capital of France?
• How many legs does a spider have?
• What is the speed of light?

they set are those in numerical form which are either continuous or discrete

• Sets can only be continuous.
• Discrete sets are not numerical.
• All sets are either finite or infinite.
• Numerical data

 are those that can be counted in a finitely

• Discrete data

• Irrational numbers
• Real numbers
• Infinite numbers

 are those that can be counted in a infinitely

• Discrete data

• Irrational numbers
• Real numbers
• Continuous data

it focuses in determining the changes in the attitude, characteristics and behavior of people or other subjects. This technique includes watching and recording actions and behaviors.

• Case study method
• Experimental research
• Observation

• Survey analysis

 it is being performed through personally asking questions to people who have the authority or expertise to say something about the data needed.

• Interviews

• Casual conversations with friends.
• Online polls without expert input.
• Focus groups with random participants.

it is used to know the thinking, feeling or opinion, about a certain phenomenon, idea and etc. and it is conducted with small people

• Quantitative research
• Focused group discussions

• Experimental research
• Descriptive research

if you have big number of samples, it is the most practical way to use. You gather data through writing. However, you must be careful presenting your questions, since we need to consider the culture, and characteristics of the respondents. You may use email, letter, or personally give your questionnaire to your respondents.

• Avoid personal interactions when collecting data.
• Only distribute the questionnaire via social media.
• Use a simple form without considering cultural differences.
• Survey