EDUCATIONAL STATISTICS

consists of the collection, organization, summarization, and presentation of data

• inferential

• descriptive

• data

• variable

a group of subjects selected from a population.

• sample

• parameter

• population

• statistics

A researcher divided subjects into two groups according to gender and then selected members from each group for her sample. What sampling method was the researcher using?

• Cluster

• Random

• Systematic

• Stratified

A study that involves no researcher intervention is called

• An experimental study

• A noninvolvement study.

• An observational study.

• A quasi-experimental study

Which of the given study is observational.

• Subjects were randomly assigned to two groups, and one group was given an herb and the other group a placebo. After 6 months, the numbers of respiratory tract infections each group had were compared.

• A researcher stood at a busy intersection to see if the color of the automobile that a person drives is related to running red lights.

Suggest some ways statistics can be used in everyday life.

Explain the differences between a sample and a population.

What is educational statistics?

Explain the difference between observational and experimental study.

Explain how statistics can be used or misused.