Grade 5 Data Management Sampling Techniques

Imagine you're a detective named Lucas at your school, tasked with uncovering the most beloved subject among students. You cleverly assign each student a unique number and then, with the help of a magical random number generator, you select 50 students including Laylaah, Finley, and Parker for your top-secret mission.

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

Answer explanation

Simple Random Sampling involves selecting a random sample from the entire population without any specific criteria. In this case, Lucas used a random number generator to select students, making it a simple random sampling method.

Imagine you're a researcher, akin to a modern-day explorer, but your mission is to uncover the patterns of student success in various subjects! You delve into the educational landscape, analyzing the performance of students in different disciplines such as science and humanities. To add an element of randomness, you decide to selectively examine students from each subject area. You choose Brenden from science, Mason from humanities, and Annah from math. What type of sampling method are you using?

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

Answer explanation

The sampling method used is Stratified Random Sampling because students are selected from different subject areas to represent each stratum.

Imagine you're Rory, a curious student studying traffic patterns at a bustling intersection. Every 5th minute during rush hour, you jot down the flow of cars and bikes. It's a fun challenge to predict the next wave!

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

Answer explanation

Systematic Random Sampling involves selecting every kth element from a list, making it suitable for capturing patterns like traffic flow at regular intervals, as Rory does every 5th minute.

You are conducting a fun study on the eating habits of high school students. As students like Taren, Mason, and Lea enter the cafeteria during the bustling lunch hour, you decide to pick every 10th student for your lively survey.

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

Answer explanation

Systematic Random Sampling involves selecting every nth element from a list, making it the appropriate method for picking every 10th student entering the cafeteria for the survey.

To spice up our understanding of the popularity of various extracurricular activities, imagine Devan, Jax, and Abby are leading a fun school project. They decide to categorize students by their favorite activity and then randomly pick participants from each category for a survey.

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

Answer explanation

Stratified Random Sampling involves categorizing the population into subgroups based on certain characteristics, then randomly selecting samples from each subgroup. This method is suitable for the scenario where students are categorized by their favorite activity.

Imagine you're on a quest to uncover the secrets of library visits among students. Armed with a clipboard and a keen eye, you decide to chat with every 3rd student—like Brenden, Lucas, or Lea—who checks out a book from the library.

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

Answer explanation

Systematic Random Sampling involves selecting every kth element from a list after an initial random start. In this case, every 3rd student is chosen, making it the correct method for the scenario described.

Imagine you're assisting Brodie in managing the busy lunch crowd at a popular campus cafeteria. To enhance customer service, you decide to measure the waiting times. Every 5th student who steps through the cafeteria doors during the peak lunch hours gets their waiting time recorded. What type of sampling method are you using?

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

Answer explanation

The sampling method being used is Systematic Random Sampling because every 5th student is selected in an organized manner, ensuring a systematic approach to data collection.

Mike, Abby, and Annah are on a mission to find out the nation's favourite ice cream flavors! They randomly select phone numbers from a directory and call those households for their exciting survey.

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

Answer explanation

Simple Random Sampling involves randomly selecting elements from a population, like calling households for a TV show survey, ensuring every element has an equal chance of being chosen.

Imagine you're part of a team with Brodie, Laylaah, and Mike, tasked with uncovering the viewing habits of people glued to the popular streaming service 'FlixNet'. You decide to categorize viewers by age group and randomly select individuals from each category for a fun series of interviews.

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

Answer explanation

Stratified Random Sampling involves dividing the population into subgroups (strata) based on certain characteristics, then randomly selecting samples from each subgroup. This method ensures representation from all age groups in the interviews.

Imagine you're a DJ at a local radio station, and you're curious about how much the teens in your city groove to Morgan Wallen's tunes. You decide to spin up a fun survey! You pick names like Lea, Rory, and Zakerie from a hat filled with names of 100 high school students to get a random sample.

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

Answer explanation

Simple Random Sampling involves selecting a random sample from the entire population without any specific criteria. In this case, picking names randomly from a hat represents simple random sampling.