Sampling and Random Sampling

Statistics and Probability

Simple Random Sampling

Round up

Simple Random Sampling

Every member of the population has an equal chance of being chosen to be a part of the sample

Simple Random Sampling

Fishbowl technique

Simple Random Sampling

Index cards

Systematic Random Sampling

The kth element of the population is selected until the desired number of sample is obtained.

Systematic Random Sampling

Round off

Systematic Random Sampling

The 3rd person who entered the room

Systematic Random Sampling

The 5th person who will enter

Stratified Random Sampling

The population is divided into strata and samples are randomly selected from each stratum.

Stratified Random Sampling

Based on some characteristics: Age, gender, Year Level, and more.

Cluster Random Sampling

Area sampling

Cluster Random Sampling

Population is broken into cluster. All elements from that cluster will make up the sample.

Cluster Random Sampling

Picking a cluster randomly

Parameter

Measure that describes a population

Statistic

Measure that describes a sample

Frequency

Range