Data Sampling Method

Interview every 10th student who enters the school in the morning. Determine the sampling method used.

• simple random sampling

• cluster sampling

• systematic sampling

• convenience sampling

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

• Simple Random Sample

• Stratified Random Sample

• Voluntary Response

• Systematic Random Sampling

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.

She selects the five closest to her desk.

• Simple Random Sampling

• Stratified Sampling

• Convenience Sampling

• Systematic Sampling

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.

She picks the student in every 5th seat.

• Simple Random

• Systematic

• voluntary response

• convenience

Match each example with the sampling method to survey 100 employees of a company that has 1000 employees.

• Cluster Sampling

• You want to select a simple random sample of 1000 employees of a social media marketing company. You assign a number to every employee in the company database from 1 to 1000, and use a random number generator to select 100 numbers.

• Simple Random Sampling

• The company has offices in 10 cities across the country (all with roughly the same number of employees in similar roles). Travel to every office to collect your data is unreasonable, so use random sampling to select 3 offices.

• Systematic Sampling

• All employees of the company are listed in alphabetical order. From the first 10 numbers, you randomly select a starting point: number 6. From number 6 onwards, every 10th person on the list is selected (6, 16, 26, 36, and so on), and you end up with a sample of 100 people.

• Stratified Sampling

• The company has 800 female employees and 200 male employees. You want to ensure that the sample reflects the gender balance of the company, so you sort the population into two strata based on gender. Then you use random sampling on each group, selecting 80 women and 20 men, which gives you a sample representative of 100 people.

Match the sampling methods to the proper scenarios.

• Systematic Sample

• You sort the population into two strata based on gender, then you use random sampling on each group

• Simple Random Sample

• You assign a number to every employee in the company database from 1 to 100, and use a random number generator to select 10 numbers.

• Clustered Sample

• From number 5 onwards, every 10th person on an alphabetical list of employees is selected

• Stratified Sample

• The company has offices in 12 cities across the country. You use random sampling to select 3 offices

Match the following

• Cluster

• Randomly select 6 stores from each of the states

• SRS

• Survey all employees at 5 randomly selected stores

• Systematic

• Readers choose to respond to a poll

• Stratified

• Number the players 1 - 1000 and use a random number generator to select 50

• Voluntary Response

• Select every 5th student

A teacher hands out an index card and asks ALL of her students to write down the following information: age, height (in inches), and what grade they are in.

Which of the following best describes her method of data collection?

• Census

• Simple Random Sample

• Cluster Random Sample

• Stratified Random Sample

A teacher splits her classes up by period. She then randomly picks 3 students from each period to do a survey.

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

• Quota Sampling

A teacher wants to know how well her students are doing on a topic. She randomly picks one class to survey.

• Simple Random

• Cluster

• Stratified

• Systematic