Data concepts, sampling, and bias
Classify data as categorical or quantitative, identify sampling methods, and recognize sources of bias in a study. Unlimited questions, five difficulty levels, and a full worked solution every time, included free with weekly lessons.
Try one
A researcher collects the outdoor temperature each day, in degrees Celsius. What type of data is this?
- continuous quantitative
- categorical
- quantitative (unspecified)
- discrete quantitative
Answer: continuous quantitative
See one solved, step by step
Every student's name is written on a slip of paper, the slips are mixed in a bin, and 30 names are drawn without looking. What sampling method is being used?
- systematic sample
- convenience sample
- stratified sample
- simple random sample
📘 Worked solution
1This is a simple random sample.Every individual has an equal chance of being chosen, with no grouping involved.
Ready to master it?
Jump into unlimited practice. Your Winny Score tracks you to 100. And if it won't click, a real tutor will make it click: first lesson free.
Start practicing