Sampling and Types of Data

A restaurant gives out comment cards to all of its customers one Friday evening, containing a brief survey about their overall experience.

What type of sampling is this?

• Convenience sampling

• Simple random sampling

• Stratified random sampling

• Quota sampling

Each student at a school has a student identification number. A computer generates 50 random identification numbers and those students are asked to take a survey.

What type of sampling is this?

• Systematic sampling

• Simple random sampling

• Stratified random sampling

• Quota sampling

The ratio of students who travel to college by train to those who walk is 2:3. There are 360 students in the sixth form.

To create a representative sample of 20 students, 8 who travel by train and 12 who walk are selected at random, and given a survey to complete.

What type of sampling is this?

• Convenience sampling

• Quota sampling

• Stratified random sampling

• Systematic sampling

A principal orders t-shirts and wants to check some of them to make sure they were printed properly. She opens the closest 2 of the 10 boxes of shirts and checks every shirt in those 2 boxes.

What type of sampling is this?

• Convenience sampling

• Simple random sampling

• Stratified random sampling

• Quota sampling

While students are lined up for school pictures, a teacher passes out a survey to every 10th student.

What type of sampling is this?

• Convenience sampling

• Simple random sampling

• Stratified random sampling

• Systematic sampling

3 people from each sports team are selected at random to complete a questionnaire about nutrition and hydration

What type of sampling is this?

• Convenience sampling

• Quota sampling

• Stratified random sampling

• Systematic sampling

What are the advantages of a survey over a census?

Tick ALL of the correct answers

• It is quicker

• It is cheaper

• It is more representative

• Data is easier to process

• The results are quantitative rather than qualitative

A teacher collates the A level grades of all of her students.

What type of data is this?

• Qualitative

• Quantitative: discrete

• Quantitative: continuous

Students are timed to complete 20 multiplication questions, then the teacher finds the mean time taken.

What type of data is this?

• Qualitative

• Quantitative: discrete

• Quantitative: continuous

A student makes a frequency table showing the number of students studying each A level subject

What type of data is this?

• Qualitative

• Quantitative: discrete

• Quantitative: continuous