1.2 Sampling Bingo - Set 1

Front

Every year, Mr. Balas surveys students at lunch and, each year, the Freshmen are overrepresented since Seniors can leave campus

Back

Bias: occurs when certain responses are systematically favored over others

Front

All the students that attend Wakefield High School

Back

Population: consists of all items or subjects of interest

Front

The 50 students from Wakefield who are selected for a Principal’s chat about lunch.

Back

Sample: selected for study and is a subset of the population

Front

Mr. Balas decides to pull up data on the number of lunches purchased in September 2021.

Back

Retrospective observational study: when investigators examine data from the past from a sample of individuals to collect data

Front

This August, the assistant principals picked a random sample of students in their grade level and are monitoring lunch choices for these students.

Back

Prospective observational study: follows a sample of individuals into the future to collect data

Front

The questionnaire that is sent to the 50 students randomly selected by Mr. Balas to gather some information.

Back

Sample survey: a type of observational study that collects data from a sample in an attempt to learn about the population from which the sample was taken

Front

Collecting data about everyone at Wakefield.

Back

Census: selects all items/subjects in a population for gathering data

Front

Choosing 200 random students at Wakefield via a lottery to participate in a poll about lunch.

Back

Simple random sample (SRS): a sampling method in which every group of a given size has an equal chance of being chosen; this method is the basis for many types of sampling mechanisms.

Front

APS makes a point to collect data from randomly selected students enrolled in each type of school－elementary, middle, and high school－about school lunches.

Back

Stratified random sample: a sampling method that involves the division of a population into separate groups called strata based on shared attributes or characteristics (homogenous grouping)

Front

Wakefield chooses 10 randomly selected Warrior Periods to ask all the students about lunch.

Back

Cluster sample: a sampling method that involves the division of a population into smaller (heterogenous) groups called clusters