Question

a principal conducts a study to find the average age of all math teachers in a given high school by recording all their ages. what type of study is this? options: experiment, observational study, census, sample survey, simulation

Explanation:

A census is a study that collects data from every member of a population. Here, the principal records the ages of all math teachers (the entire population of math teachers in the high school), so this is a census. An experiment involves manipulating variables, an observational study observes without intervention (but not necessarily the entire population), a sample survey uses a sample, and a simulation imitates a situation. Since all math teachers are included, it's a census.

Answer:

census