Sampling or Census

A set of observations that constitute PART of the population.

• Statistic

• Census

• Population

• Sample

Sampling method that consists of n individuals from the population chosen in such a way that every individual has an EQUAL chance of being selected.

• Stratified Sampling

• Simple Random Sampling (SRS)

• Cluster Sampling

• Systematic Sampling

A quantity calculated from the observations in a SAMPLE.

• Parameter

• Study

• Statistic

• Observation

Mrs. Trahan samples her class by picking 10 numbers from her hat and each number is assigned to a student. This is ______________ random sampling.

• Systematic

• Simple

• Stratified

• Cluster

Farmer Joe separates his apple tree farm into 10 regions.  He counts the number of apples produced in just one of the regions and uses that estimate to predict the number of apples produced on the whole farm.  This is _______ sampling.

• Simple

• Cluster

• Stratified

• Systematic

Identify the population and sample.

A survey of 1535 American households found that 18% of households do not own a computer.

• Population: 1535 American households

  Sample: 18% of households

• Population: All American households

  Sample: 1535 American households

• Population: All American households

  Sample: 18% of households

• Population: 1535 American households

  Sample: 276 households

Identify the population and the sample.

• Population: All elementary school children

  Sample: 2625 elementary school children surveyed

• Population: All elementary school children

  Sample: 28% of the children

• Population: 2625 elementary school children

  Sample: 28% of the children

• Population: 2625 elementary school children

  Sample: 735 elementary school children

Which sampling technique involves selecting every nth subject in a population?

• Simple Random Sample

• Stratified

• Cluster

• Systematic

Mrs. Trahan samples her class by selecting every third person on her class list.  Which type of sampling method is this?

• Simple

• Systematic

• Stratified

• Cluster

Farmer Joe's apple tree farm is set up in 100 rows.  He counts the number of apples produced on every 10th row to estimate the number apples produced on the whole farm.  This is _____________ sampling.  

• Simple

• Stratified

• Cluster

• Systematic