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Course: Statistics and probability?>?Unit 6
Lesson 4: Types of studies (experimental vs. observational)- Types of statistical studies
- Worked example identifying experiment
- Worked example identifying observational study
- Worked example identifying sample study
- Observational studies and experiments
- Types of statistical studies
- Appropriate statistical study example
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Types of statistical studies
Problem
The mayor of Statville had to decide how to allocate her education budget between the two high schools in town, “Stat Sticks” and “Datum High.” To decide which school deserves a bigger portion of the budget, she wanted to assess which school is more helpful to its students.
She went over the grade sheets of the students from both schools in the past years. For each student, she calculated the difference between scores on their high school entrance and exit exams. Then, she compared the average difference for the students from each school.
What type of statistical study did the mayor use?
Is the study appropriate for the statistical questions it's supposed to answer?
Mark the most suitable choice.