MATH || COLLECTING DATA SAMPLE SIZE SAMPLING TECHNIQUE || 3.1-3

The information or facts collected for analysis or references like numbers or words or images

Data

Primary data collection focuses on being?

Direct

What are the three ways of primary data collection

Survey, observation, and experimentation

This is where you watch the behavior or events

Observation

This where you conduct testing

Experimentation

What are the two ways of doing a survey

Interview and questionnaire

This is where you gather data from published sources or made by other people

Secondary data collection

The secondary data collection direct or indirect?

Indirect

What are examples of public sources and give at least three

Books reports journals newspapers legitimate websites or database

What is the slovins formula

n = N ÷ 1 + Ne²

What does the smaller n represent in the formula

Sample size

What is the upper and represent in the formula

Population

What does the e represent in the formula

Margin of error

What do we do to the final enter when we do the formula

Rounding up always

These are the methods where every member of the population has a known chance of being selected or sampled

Probability sampling techniques

Every member has an equal chance of being selected and this is unbiased

Simple random sampling

Samples are selected at regular intervals or pagitan

Systemic sampling

Population is divided into subgroups and samples are taken from each subgroups

Stratified sampling

Population is divided into clusters and samples are taken of each clusters

Cluster sampling

You select samples and multiple stages using different methods on each stage

Multistage sampling

Tapos something is bias and these are the methods where samples are selected based on non-random criteria and some members have no chance being selected

Non-probability sampling

Samples are taken from people who are easily accessible

Convenience sampling

Samples are selected for specific purpose or characteristic

Purposive sampling

You select the most common or typical case from a population

Modals instance sampling

Sampling technique where existing participants recruit future participants from social network

Snowball sampling