Advanced math huhu

The study of people, supplies, and the like in a state.

Statistics

refers to the gathering of info/data.

collection

summarizing data

organization or presentation

describing using statistical methods

analysis

Branches of statistics

Descriptive and inferential

entire collection of observations(people or objects)

population

observation such as a person or objects included in the study.

individual

a small portion, a subset, subgroup, or representatives of the population

sample

characteristic of a population

parameters

a collection of facts or a set of information

data

2 types of data

Qualitative and Quantitative

2 types of quantitative

discrete and continous

can assume certain value and finite number of values

Discrete

can assume several values within a specified interval or range.

continous

the characteristic of the individual to be measured/observed; can be classified on the basis if they are dependent or independent

variable

fundamental quantities that do not change in value

constants

What are different measurement scales?

nominal, ordinal, interval, and ratio.

labels and categories

Nominal

By order or rank

Ordinal

no intrinsic zero/ starting point

interval

there is a zero/ staring point

ration

Sampling methods

Simple random, stratified random, systematic, cluster, and convenience.

firsthand info

primary

republished materials and sources

secondary

Methods of organization

textual, tabular, and graphical,

refers to facts concerning things

data

A set of data that have been processed and presented in a form of suitable for interpretation.

Information

Direct contact with the interviewee

Direct

Distributes written questionnaires to respondents

Indirect

Enforced by Institutions or NGOs for recording purposes

Registration methods

makes use of senses

observation

Used to find cause and effect. Mostly used in science

Experimentation

father of statistics

Karl Pearson

adolphe Quetelet

father of modern statistics